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Tytuł:
Sequence stratigraphy of the Oxfordian to Tithonian sediments (Baisakhi Formation) in the Jaisalmer Basin
Autorzy:
Pandey, D. K.
Pooniya, D.
Powiązania:
https://bibliotekanauki.pl/articles/2077325.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
sequence stratigraphy
Oxfordian–Tithonian
Jaisalmer
stratygrafia
Oksford
tyton
Opis:
The Oxfordian to Tithonian sediments deposited along the southern Tethyan margin exhibit very diverse sedimentary facies. The Jaisalmer Basin, situated along the northwestern margin of the Indian peninsula, is a good example of those preserving these sediments (Baisakhi Formation). The scattered nature of the outcrops, due to peneplanation and desert sand cover, and the diversity in sedimentary facies, have led earlier workers to employ a confusing lithostratigraphy and lithostratigraphic correlations. New records of ammonites, more detailed facies description and the application of the sequence stratigraphic method helped to sort out the stratigraphical problems of these isolated outcrops. The complexity of the Oxfordian-Kimmeridgian-Tithonian sediments present in the Jaisalmer Basin, as evidenced by ammonite finds can be traced along an onshore – offshore transect. Within the Oxfordian-Tithonian strata of the Baisakhi Formation, Jaisalmer Basin, 35 parasequences grouped into three depositional sequences (TST-HST/FSST) have been recognized. In at least two cases, the maximum flooding surfaces (MFS) are superimposed on the transgressive surfaces within very condensed sections. The parasequences belong to a continuous succession representing shoreface (deepest part of the basin) to foreshore (shallowest part of the basin). During deposition of the Tithonian succession the southern part of the basin witnessed shallow, nearshore, or foreshore to fluvial depositional environments and, consequently, contains several depositional gaps and less distinct parasequences. The chronological order of the parasequences has been established on the basis of ammonites: Oxfordian – Perisphinctes (Dichotomosphinctes) sp. and P. (Dichotomoceras) sp.; Kimmeridgian – Torquatisphinctes alterniplicatus (Waagen) and Pachysphinctes aff. major Spath; Tithonian – Aulacosphinctoides sp., Virgatosphinctinae and other zonal ammonites recorded by earlier workers. The most logical facies correlation in conformity with Walther’s law was also used. Unfortunately, no marker beds have been recognized; however, the record of at least two brackish-water phases helped in the understanding of depositional settings along the onshore-offshore transects during these time intervals. In general, the Kimmeridgian-Tithonian part of Baisakhi Formation exhibits a general coarsening-upward trend and a change from lower shoreface zone to fluvial environments. The three sequence cycles interpreted within the Oxfordian-Tithonian sediments in the Jaisalmer Basin correspond to second-order sequence cycles.
Źródło:
Volumina Jurassica; 2015, 13, 1; 65--76
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagenesis, sequence stratigraphy and reservoir quality of the Carboniferous deposits of the southeastern Lublin Basin (SE Poland)
Autorzy:
Kozłowska, Aleksandra
Waksmundzka, Maria I.
Powiązania:
https://bibliotekanauki.pl/articles/2059687.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
diagenesis
sequence stratigraphy
reservoir quality
Carboniferous
Lublin Basin
Opis:
This study estimates the reservoir properties of the Carboniferous deposits in the southeastern part of the Lublin Basin based on diagenetic and sequence stratigraphic patterns. Depositional sequences distinguished represent the following environments/processes: shallow clay and carbonate shelves, deltaic, fluvial, and hyperconcentrated flow while para-sequences (cyclothems), maximum regression-initial transgression surfaces (T), maximum flooding surfaces (MFS) and also lowstand (LST), transgressive (TST) and highstand (HST) systems tracts have been recognised. Sequences recognized may be linked to the global stratigraphic division of the Carboniferous, thus providing a time framework and environmental context for petrographic and petrophysical examinations. The reservoir properties were found to be clearly controlled by depositional environment, diagenetic history and burial. The best properties were recognized in sandstone lithosomes formed in braided, meandering and anastomosed fluvial channels and hyperconcentrated flows which fill the incised valleys and belong to the LST. They are characterized by good porosity reaching up to 15.1%. The TST and HST deposits are represented chiefly by claystones, mudstones and limestones that formed in a shallow shelf and deltaic environment, being sealing intervals. The diagenetic history of sandstones comprises eo-, meso- and telodiagenetic phases. The major processes acting during the first of these were mechanical compaction, dissolution of mineral grains, formation of predominantly quartz overgrowths around the quartz grains, and crysialiizaton of kaolinite. During mesodiagenesis, cementation with quartz, kaolinite and carbonates continued along with the formation of dickite and fibrous illite; moreover, mineral grains were dissolved and chemical compaction set in. The effects of telodiagenetic processes were feldspar dissolution and precipitation of kaolinite. During diagenesis the maximum temperature affecting the Carboniferous deposits was ~120°C. Compaction and cementation were the main factors responsible for the reduction of porosity by approximately 55 and 38%, respectively. One of the major diagenetic processes was dissolution resulting in the formation of secondary porosity. The Serpukhovian and Bashkirian sandstones from sequence 11 show good reservoir potential, while those from sequences 6, 9, 10, 12-14 only fair potential.
Źródło:
Geological Quarterly; 2020, 64, 2; 422--459
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biostratigraphy and sequence stratigraphy of the Lower Cretaceous in the NW part of the Mid-Polish Trough
Autorzy:
Dziadzio, Piotr
Ploch, Izabela
Smoleń, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/2058689.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Lower Cretaceous
ammonite
foraminifera
ostracod biostratigraphy
nannoplankton biostratigraphy
depositional systems
sequence stratigraphy
relative sea-level changes
NW Poland
Opis:
By comparison with the Lower Cretaceous of central and SE Poland, that of NW Poland (the Pomeranian, Szczecin, and Mogilno-Łódź troughs) has scarce biostratigraphic data. But, despite the lack of Lower Cretaceous exposure in the NW Polish Lowlands, borehole data, including borehole-cores and geophysical logs, allow analysis of complete successions. We refine the stratigraphic units using parallel studies of ammonites, microfauna and calcareous nannoplankton collected from the same intervals, and by correlating age-defined intervals with geophysical logs. Ostracod zones F to A are documented by the presence of ostracod assemblages representing the interval between the Upper Tithonian (ostracod zone F) and the lower part of the Upper Berriasian (ostracod zones E to A). The fragmentary and poorly preserved ammonites allowed only for distinguishing the uppermost Middle and Upper Berriasian (Ryazanian), while the informal subdivisions from the central part of the basin could not be identified unequivocally. Nannoplankton recognized in the succession analysed was very rare due to shallow marine facies of the strata. Only one nannoplankton zone was recognized in the lower part of the succession studied: the CC2 Stradneria crenulata Zone (uppermost Middle and Upper Berriasian and lowermost Valanginian). An additional study only on nannoplankton enabled recognition of certain boreal taxa typical of the BC2 zone of the Uppermost Riazanian. Valaginian ammonites occur in core material located closer to the central part of the trough. Some planktonic foraminiferal species indicate the Lower Aptian. Some Upper Cretaceous nannoplankton zones were also recognized: the CC9 Eiffellithus turriseiffeli (Uppermost Albian to Lower Cenomanian) and UC0, UC1-2 and UC3 zones which correspond to the Upper Albian and Lower as well as Middle Cenomanian. The sequence stratigraphic interpretation was based on geophysical logs with the application of gamma-ray, neutron-gamma, spontaneous potential and resistivity logging, as well as caliper logging. These studies allowed recognition and correlation of sedimentary sequences within the part of the sedimentary basin analysed, characterized by a similar cyclic pattern of geological phenomena described using depositional sequences as in the central and SE part of the Polish Basin. Third-order depositional sequences with maximum flooding surfaces were distinguished. Effective correlation of depositional cycles with biostratigraphy and with the global sea level curve was demonstrated for several boundaries, confirming the applicability of this method for the Polish part of the the Central-European Basin. Other boundaries recognized that are not correlatable and shifted relative to Haq’s curve may reflect autogenous factors (e.g., local tectonics) overlapping with the global changes controlled by allogenic processes
Źródło:
Geological Quarterly; 2021, 65, 4; s. 237--257
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palaeobiogeography, palaeoecology, and sequence stratigraphy of the Upper Jurassic carbonate succession of the Lar Formation, central Alborz Zone, Iran
Autorzy:
Saleh, Zahra
Reháková, Daniela
Powiązania:
https://bibliotekanauki.pl/articles/27324245.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Upper Jurassic
microfacies
foraminifera
ammonites
calcareous dinoflagellates
biostratigraphy
sequence stratigraphy
Alborz Zone
Iran
Opis:
Foraminifera, ammonites, and calcareous dinoflagellates were used for stratigraphy and, together with microfacies, for the assessment of the palaeoenvironmental conditions of the Upper Jurassic deposits in the central Alborz Zone of northern Iran. The Lar Formation (Lar Fm.) in the Polur section is of latest Oxfordian to early Kimmeridgian age. The ammonite Subnebrodites planula and the calcareous dinoflagellate Colomisphaera nagyi have been introduced as new biomarkers of the lower Kimmeridgian in the central Neo-Tethys. The distribution of calcareous dinoflagellates reflects possible dispersal routes along a narrow seaway between the western Neo-Tethys and the Alborz Zone in the central Neo-Tethys. The Terebella-Crescentiella associations of the Lar Fm. represent a low-energy setting under dysoxic conditions in the Central Neo-Tethys Ocean. The benthic foraminiferal assemblages in this formation show a high dominance of infaunal taxa and r-selected strategists. This assemblage is reminiscent of eutrophic conditions and low oxygen levels in the lower part of the Lar Fm. Good preservation of the hexactinellid sponges in the upper part of the Lar Fm. also indicates an oxygen-minimum zone. Three third-order depositional sequences can be distinguished in the study area based on six microfacies. Depositional sequence 1 (DS1) is composed mainly of argillaceous limestone and medium- to thick-bedded limestone, corresponding to an outer ramp-to-middle ramp environment. Depositional sequence 2 (DS2) comprises breccia limestone and thick-bedded limestone facies in its lower part and thin-bedded limestone to massive limestone in its upper part. The breccia limestone facies may be associated with subaerial exposure and reworking of previously deposited sediment during a relative sea level fall. The thin-bedded limestone to massive limestone of DS2 consists mainly of bioclastic mudstone to wackestone (outer ramp). These represent an deep-water outer homoclinal ramp facies. Depositional sequence 3 (DS3) consists mainly of massive limestone to thick-bedded limestone with a bioclastic peloidal microbial Crescentiella packstone (middle ramp). The relative stratigraphic positions of DSs1–3 and sequence boundaries in the uppermost Oxfordian to lower Kimmeridgian of the Polur area show a fair match to the upper Oxfordian to lower Kimmeridgian sequences (JOx7, JOx8, JKi1 and JKi2) on the global sea level curve.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 15
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bajocian transgressive-regressive sequences of the Tecocoyunca Group, southern Mexico, with maximum flooding surfaces marked by Thalassinoides
Autorzy:
Pieńkowski, Grzegorz
Martini, Michelangelo
Zepeda-Martínez, Mildred
Powiązania:
https://bibliotekanauki.pl/articles/2058570.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Mexico
Jurassic
Thalassinoides
maximum flooding surfaces
siliciclastic sequence stratigraphy
Opis:
Bajocian (Middle Jurassic) transgressive-regressive sequences (TRS), outcropping in the Rosario Nuevo Creek (Tezoatlán Basin, Tecocoyunca Group) in Oaxaca State, Mexico, represent one of the Jurassic phases of opening and widening of a trans-Pangaean marine corridor (called also the Hispanic Corridor) and show a retrogradational-progradational set of sedimentary successions with decipherable and diverse facies. Two TRSs have been distinguished. The lower one starts with fluvio-deltaic sandstones including pedogenic horizons. Drowning of the deltaic plain and gradual rising of the water table is marked by change in vegetation: from large trees to low-rise vegetation with characteristic clumps of dense roots cemented by siderite. The delta plain succession is topped by a thin coal seam, followed by a transgressive surface. Ensuing laminated mudstones of restricted marine origin pass into open marine deposits, represented by bioturbated heterolithic strata with ammonites followed by nearshore sandstones, deposited in a storm-dominated basin. A similar succession, although without the deltaic part, is repeated in the next TRS. Of note are two thin (15-20 cm) continuous beds with Thalassinoides isp. networks, present within open marine deposits. Although large Thalassinoides networks are mostly known from shallow-marine and coastal environments, the case from Mexico represents less common occurrences from a deeper marine (offshore) setting, associated with maximum flooding surfaces, sediment starvation and firmgrounds (Glossifungites ichnofacies). Occurrences of Thalassinoides meshes, precisely marking maximum flooding surfaces, are helpful in defining the hierarchy of sequence stratigraphic cycles.
Źródło:
Geological Quarterly; 2019, 63, 3; 449--459
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sediment discharge and storage over the last deglacial highstand period on the central Vietnam shelf off Nha Trang
Autorzy:
Dung, Bui Viet
Stattegger, Karl
Kieu, Nguyen Van
Thanh, Nguyen Trung
Thong, Bui Xuan
Vu, Pham Nguyen Ha
Man, Ha Quang
Trang, Pham Hong
Powiązania:
https://bibliotekanauki.pl/articles/2058662.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
sediment budget
Nha Trang shelf
central Vietnam
Holocene highstand
sequence stratigraphy
Opis:
A sediment budget for the central Vietnam shelf off Nha Trang over the last deglacial Holocene highstand period has been investigated on the basis of shallow seismic and sediment core data and empirical equations. The annual suspended sediment discharge to the Nha Trang shelf ranges from: 4.3 to 5.4 Mt/year. Estimates based on published empirical equations suggest that the sediment discharge by three main local mountainous rivers (the Cai, Dinh and Van Phong rivers) that enter the Nha Trang shelf ranges between 1.7 and 4 Mt/year, which implies that the local rivers discharge approximately 75% of the total annual sediment input to the shelf. The annual sediment supply of the Cai River is approximately 2 and 6 times higher than that of the Dinh and Van Phong rivers, respectively. The highstand sediment depocentre of the Nha Trang shelf is mostly attached to the local river outflows, indicating their importance as the principal sediment supply sources to the shelf. Additional sources of sediment supply to the Nha Trang shelf can probably be related to along-shore transport from the nearby shelves. Calculations based on seismic and sediment core data indicate that the net sediment volume storage on the Nha Trang shelf is approximately 2.15 Mt/year. Approximately 50% of the total sediment yield supplied to the shelf is probably transported along-shore to the south. The sediment budget model for highstand deposits on the Nha Trang shelf is typical for a small mountainous river basin, which is significantly different from that of the large river delta systems in Vietnam such as the Mekong and Red rivers where 90% of the river sediments are captured on the delta plain/subaqueous part and only 10% of the river sediments are transported to the nearby shelf. In contrast, most of the sediments supplied by small mountainous rivers off Nha Trang are transported to the mid-shelf, forming a shore-parallel mud depocentre.
Źródło:
Geological Quarterly; 2019, 63, 2; 395--406
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ewaporaty cechsztynu PZ1- PZ3 bloku Gorzowa
Zechstein 1- 3 evaporites of the Gorzów Block (NW Poland)
Autorzy:
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2074802.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
cechsztyn
ewaporaty
stratygrafia sekwencji
Polska Zachodnia
Zechstein
evaporites
sequence stratigraphy
West Poland
Opis:
The Gorzów Block (West Poland) occurs in the transition zone between the PZ1 sulphate platform and the Na2 basin. In contrast to the western part of the Southern Permian Basin where the Z1 halite (Oldest Halite Na1) is normally restricted to the peripheral subbasins located south of the main basin, in Poland it occurs both in the basin centre and in the former basins of the Lower Anhydrite within the marginal sulphate platform complex, where halite sequences are thick and may have originated in a deep-water setting. The Na1 deposits have been considered so far to be LST deposits both in the marginal sulphate platform facies as well as in the basin centre. Brine salinities (and the minerals they precipitate) are controlled by brine residence times in the basin, and these are determined primarily by the absolute and the relative rates of water flow into, and brine flux out of the basin (Kendall, 2010). Thus sea-level rise in the Boreal Sea could have resulted in the increase of the brine residence times in the Zechstein basin and the deposition of more saline evaporites. Consequently, the Oldest Halite in the basin centre in Poland is regarded as the TST deposit.
Źródło:
Przegląd Geologiczny; 2010, 58, 8; 689-694
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The origin and depositional architecture of Paleogene quartz-glauconite sands in the Lubartów area, eastern Poland
Autorzy:
Czuryłowicz, K.
Lejzerowicz, A.
Kowalczyk, S.
Wysocka, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059959.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
littoral facies
syndepositional tectonics
extensional graben
sequence stratigraphy
ground penetrating radar
3D modelling
Opis:
The study uses quantitative methods to analyse the latest Bartonian to Early Rupelian sedimentary succession at the SE outskirts of the Polish Lowland Paleogene Basin, in the back-bulge zone of the Carpathian orogenorebulge. The vertical lithotype proportion diagrams from a large number of well logs are compiled to reveal the area’s sequence stratigraphy. Six sequences are recognized and correlated with 3rd-order eustatic sea level cycles. The basal sequence of type 1 is overlain by three sequences of type 2 and followed by a fifth sequence of type 1, whose depositional forced-regressive and lowstand systems tracts brought the main volume of quartz-glauconite sand to the study area. The study focuses further on the deposits of this fifth sequence, exposed and surveyed with GPR in the Nowodwór-Piaski sand pit. Their sedimentary facies analysis reveals the local spatial pattern of a wave-dominated and tidally-influenced sedimentation, supporting the earlier notions of a southern palaeoshoreline and a tectonically-controlled sedimentation.The analysis, aided by multidimensional GPR survey, indicates syndepositional development of a tectonic graben filled laterally by fault scarp-attached large sand bars and an axial action of tidal ebb currents. The bars were formed of shore-derived sand swept by littoral waves from the graben footwall areas. As the graben’s tectonic activity ceased, it became buried by the lowstand regressive sands overlain by gravelly foreshore deposits, most of which were later removed by the Pleistocene glacial erosion. A 3D model of the deposits in the Nowodwór-Piaski area is constructed on the basis of outcrop and GPR data with the use of multiple-point statistical methodology to depict the internal architecture, heterogeneity and spatial relationships of main sedimentary facies. The model can serve as a guide for the future exploration and exploitation of the quartz-glauconite sands in the area and as instructive example of how a petroleum reservoir model of a complex sedimentary succession can be constructed with the use of modern statistical methods.
Źródło:
Geological Quarterly; 2014, 58, 1; 125--144
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ichnology of mixed siliciclastic-carbonate sedimentary cycles and their sequence stratigraphic context: Kaladongar Formation (Middle Jurassic) of Kachchh, western India
Autorzy:
Joseph, J. K.
Patel, S. J.
Powiązania:
https://bibliotekanauki.pl/articles/2077326.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
sequence stratigraphy
mixed siliciclastic-carbonates
ichnology
Kachchh Basin
western India
stratygrafia sekwencji
ichnologia
Kachchh
Indie
Opis:
The Middle Jurassic Kaladongar Formation, Patcham Island, Kachchh, western India, comprises of a 353 m-thick mixed siliciclastic-carbonate succession of asymmetrical shallowing and deepening upward sedimentary cycles. It is subdivided into five main facies i.e., micritic sandstone, allochemic sandstone, sandy allochem limestone, micritic mudrock, and sandy micrite along with shales and conglomerates. Eight trace fossil assemblages comprising 34 ichnogenera are defined, including the Asterosoma, Gyrochorte, Rhizocorallium, Thalassinoides, Planolites–Palaeophycus, Phycodes, Ophiomorpha, and Skolithos assemblages that reflect five depositional facies: offshore, transitional, lower, middle, and upper shoreface. The sedimentary packages and associated trace fossil assemblages are separated by various discontinuities, stratigraphic surfaces and stratigraphic boundaries within the succession of the Kaladongar Formation and reveal three phases of regression (RST-I, RST-II and RST-III) and three phases of transgression (TST-II, III and IV) within the 3rd order systems tracts developed in the slowly transgressing sea during the Bajocian-Bathonian time interval.
Źródło:
Volumina Jurassica; 2015, 13, 2; 81--99
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oil- and gas-bearing sediments of the Main Dolomite (Ca2) in the Międzychód region: a depositional model and the problem of the boundary between the second and third depositional sequences in the Polish Zechstein Basin
Autorzy:
Jaworowski, K.
Mikołajewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2066024.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polskie Zagłębie Cechsztyn
stratygrafia
dolomit główny
Polish Zechstein Basin
Main Dolomite
depositional model
sequence stratigraphy
Opis:
The Polish Zechstein Basin was a tideless sea dominated by storms. Main Dolomite deposits of the Miedzychód region were deposited: a) on the carbonate platform (in the environments of the outer barrier, inner barrier and high- and low-energy platform flat); b) on the platform slope; c) at the toe-of-slope; d) on the basin floor. The best reservoir properties are recorded in shallow-marine deposits of the outer and inner barriers and in deep-sea sediments of the toe-of-slope (turbidites and debrites). Rich reserves of crude oil and natural gas were discovered both on the carbonate platform (the Miedzychód and Grotów deposits) and at its toe-of-slope (the Lubiatów deposit). The Main Dolomite sediments are wholly included in the second depositional sequence (PZS2 sensu Wagner & Peryt, 1997). The maximum flooding surface of the PZS2 sequence within the platform, its slope and toe-of-slope, runs along the A1g/Ca2 boundary. In the basinal zone, its correlative equivalent is a hard ground observed within the Main Dolomite carbonate rhythmites. The boundary between the second and third (PZS2/PZS3) depositional sequences (corresponding to the ZS3/ZS4 sequence boundary in the German Basin) runs on top of the Main Dolomite carbonates (on the platform slope, at the toe-of-slope and on the basin floor) and above top of the Main Dolomite carbonates, within the lower part of the Basal Anhydrite (on the platform).
Źródło:
Przegląd Geologiczny; 2007, 55, 12/1; 1017-1024
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Korelacja i geneza piaskowców karbońskich w świetle stratygrafii sekwencyjnej i ich potencjał węglowodorowy w północno-zachodniej i centralnej części basenu lubelskiego
Correlation and origin of the carboniferous sandstones in the light of sequence stratigraphy and their hydrocarbon potential in the NW and central parts of the Lublin Basin
Autorzy:
Waksmundzka, M. I.
Powiązania:
https://bibliotekanauki.pl/articles/2063258.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
analiza litofacjalna
stratygrafia sekwencji
węglowodory
basen lubelski
karbon
lithofacial analysis
sequence stratigraphy
hydrocarbons
Lublin Basin
Carboniferous
Opis:
Na podstawie badań sedymentologicznych utworów karbonu basenu lubelskiego scharakteryzowano środowiska depozycji piaskowców, mułowców, iłowców, skał węglanowych i węgla. Regionalna korelacja pozwoliła na wydzielenie 22 sekwencji depozycyjnych (trzeciego rzędu), ograniczonych niezgodnościami identyfikowalnymi jako powierzchnie erozyjne, stanowiące spągi koryt rzecznych lub wciętych dolin. W obrębie każdej sekwencji wyróżniono utwory ciągów systemowych niskiego stanu WPM (względnego poziomu morza), transgresywnych oraz ciągów systemowych wysokiego stanu. Następnie przeprowadzono korelację wydzieleń stratygrafii sekwencj i z chronostratygraficznym podziałem karbonu. Podnoszenie się WPM, stanowiącego bazę erozyjną rzek w czasie niskiego stanu, było podstawowym czynnikiem wpływającym na wykształcenie facjalne i miąższość potencjalnie złożowych piaskowców rzecznych. Utwory te najczęściej występują w systemach wciętych dolin. W obrębie sekwencji 2,4-10,16 spotykane są średnie i duże systemy prostych wciętych dolin, natomiast w sekwencjach 11-15 duże systemy złożone. W profilu sekwencji 17-22 piaskowce związane są ze środowiskiem nie wciętych systemów koryt rzecznych. Podnoszenie WPM w czasie późnego niskiego stanu, jego wahania w czasie transgresji i wysokiego stanu oraz wzmożona dostawa osadów lub jej brak były podstawowymi czynnikami mającymi wpływ na wykształcenie facjalne, miąższość i lateralne rozprzestrzenienie iłowców i mułowców równi aluwialnych, estuariowych, deltowych i płytkoszelfowych, które są dobrymi horyzontami uszczelniającymi. Piaskowce sekwencji 6, 9, 12, 16, wypełniające średnie lub duże wcięte doliny, oraz sekwencji 17, powstałe w systemach nie wciętych koryt rzecznych, są predysponowane do akumulacji węglowodorów. Wynika to z ich izolowanego usytuowania w obrębie stosunkowo bogatych w rozproszoną materię organiczną iłowców i mułowców, będących jednocześnie horyzontami uszczelniającymi. Porównanie schematu sekwencji z używanymi dotychczas do korelacji granicami jednostek litostraty graficznych karbonu basenu lubelskiego, jak również z kompleksami geofizycznymi podważa ich izochroniczną interpretację i zmniejsza przydatność korelacyjną.
Sedimentological investigations of Carboniferous deposits from the Lublin Basin enabled characterisation of the depositional environment of sandstones, mudstones, claystones, carbonates and coals. A regional correlation allowed identification of 22 depositional sequences (third-order) are separated by unconformities, preserved as erosional bottoms of fluvial channels or incised valleys. Each sequences are represented by lowstand, transgressive and highstand systems tracts. Subsequently, a correlation of the sequence stratigraphy division with the Carboniferous chronostratigraphic scheme was carried out. The rise of relative sea level, being an erosional base to rivers during the low sea-level stand, was the fundamental factor affecting the facies development and thicknesses of the potentially productive fluvial sandstones. These deposits most frequently occur in incised valley systems. Medium and large sized systems of simple incised valleys are observed in the sequences 2, 4-10 and 16. Large compound systems are known from the sequences 11-15. The sandstones observed in the sequences 17-22 are associated with non-incised systems of river channels. The rise of relative sea level during the lowstand period, its fluctuations during the transgression and highstand periods, and an increased supply of sediments or its lack were the basic factors that influenced the facies development, thickness and lateral extent of alluvial plain, estuarine, deltaic and shallow shelf claystones and mudstones acting as good sealing horizons. The sandstones of the sequences 6,9,12 and 16 (filling medium and large incised valleys) and the sequence 17 (developed in systems of non-incised river channels) are predisposed to be reservoir rocks for hydrocarbon accumulations. It is due to their position as isolated bodies within the sealing claystones and mudstones relatively rich in dispersed organic matter. A comparison of the sequence scheme both with the previously used boundaries of the Carboniferous lithostratigraphic units in the Lublin Basin and with geophysical complexes questions their isochroneity and reduces their usefulness for correlations.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2008, 429; 215-223
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola procesów tektonicznych oraz eustatycznych w rozwoju sekwencji stratygraficznych utworów neoproterozoiku i kambru basenu lubelsko-podlaskiego
Relative role of tectonic and eustatic processes in development of the Neoproterozoic and Cambrian stratigraphic sequences of the Lublin-Podlasie Basin
Autorzy:
Pacześna, J.
Poprawa, P.
Powiązania:
https://bibliotekanauki.pl/articles/2074341.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
basen lubelsko-podlaski
basen sedymentacyjny
neoproterozoik
kambr
stratygrafia sekwencji
Lublin-Podlasie Basin
Neoproterozoic
Cambrian
sequence stratigraphy
Opis:
Sequence stratigraphy approach has been applied for the Neoproterozoic to Cambrian sedimentary fill of the Lublin–Podlasie Basin; the main goal of the study is to discriminate between eustatic and tectonic control of the observed sequence development. The Neoproterozoic and Cambrian sedimentary fill of the Lublin–Podlasie Basin is subdivided here into two second-order depositional sequences, separated by a basin-wide unconformity. The lower sequence A is poorly recognised. It is presumably of the early Neoproterozoic age, and is characterized by continental to costal shallow marine developments. Sequence B comprises the (late?) Neoproterozoic to Middle Cambrian. The lowermost part of the sequence B is composed of a lowstand systems tract (LST). At that time a low relative sea level was con-trolled by regional thermal doming, followed by rapid clastic and volcanogenic deposition, with rate exceeding that of subsidence of extensional grabens. During the latest Ediacaran, a transgressive systems tract I (TST I) developed. Increase of the rate of relative sea level rise was induced by a transition from syn-rift to post-rift subsidence. During the development of a following highstand systems tract I (HST I), significant sediment supply exceeded the rate of basement subsidence, causing progradation of shoreline. The next higher up-section transgressive system tract (TST II) is characterized by a gradual rela-tive sea level increase and reflects continued thermal sag phase of the Lublin–Podlasie Basin. Development of the TST II was coeval with a global transgression and controlled mainly by eustatic sea level rise. The beginning of the Middle Cambrian corresponds to the development of a HST II, controlled by a low rate of increase of the relative sea level, even if it was coeval in time with the Hawke Bay regression. The HST II is therefore interpreted here as controlled by local tectonic processes, superimposed on continued post-rift thermal subsidence of the passive margin.
Źródło:
Przegląd Geologiczny; 2005, 53, 7; 562--571
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wysokorozdzielcza stratygrafia sekwencji utworów środkowego kambru w południowej i północno-wschodniej części bloku B (wyniesienie Łeby)
High-resolution sequence stratigraphy of the Middle Cambrian deposits from the southern and northeastern part of Block B (Łeba Elevation)
Autorzy:
Pacześna, J.
Powiązania:
https://bibliotekanauki.pl/articles/2062895.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
parasekwencje
korelacja chronostratygraficzna
środkowy kambr
blok B
wyniesienie Łeby
parasequences
chronostratigraphic correlation
Middle Cambrian
Block B
Łeba Elevation
Opis:
Przedmiotem artykułu jest wysokorozdzielcza stratygrafia sekwencji środkowokambryjskich utworów południowej i północno-wschodniej części bloku B (wyniesienie Łeby). Zdefiniowane parasekwencje formują ciąg systemowy wysokiego stanu względnego poziomu morza o zróżnicowanej regionalnie budowie. Facjalne przekroje prostopadłe i równoległe do rozciągłości paleolinii brzegowej umożliwiły chronostratygraficzną korelację skał zbiornikowych dla węglowodorów w regionalnej skali basenu sedymentacyjnego.
The main subject of article is a high-resolution sequence stratigraphy of the Middle Cambrian deposits of southern and northeastern part of the Block B (Łeba Elevation). Distinguished parasequences form a highstand systems tract of the relative sea level with regionally differentiated stacking patterns. Facies sections, perpendicular and parallel to paleoshoreline made possible a correlation of the hydrocarbons reservoir rocks on the basinwide scale.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2012, 448 (1); 71--79
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sposób korelacji anomalii sejsmicznych z informacją otworową w analizie sedymentologicznej rejonu Pustków–Sędziszów (południowa część zapadliska przedkarpackiego)
Method of seismic anomalies correlation with the well information for sedimentology analysis of Pustków–Sędziszów area (southern part of the Carpathian Foredeep)
Autorzy:
Stankiewicz, B.
Dzwinel, K.
Pasek, P.
Powiązania:
https://bibliotekanauki.pl/articles/2063146.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
sejsmika 3D
anomalia sejsmiczna
geofizyka otworowa
stratygrafia sekwencji
miocen
zapadlisko przedkarpackie
3D seismic data
seismic anomaly
well log
sequence stratigraphy
Miocene
Carpathian Foredeep
Opis:
Zintegrowana analiza anomalii sejsmicznych wraz z interpretacją danych geofizyki otworowej dała podstawy do odtworzenia środowiska sedymentacji osadów mioceńskich zapadliska przedkarpackiego. Zmienność wykształcenia osadów, zarówno pionową, jak i poziomą, prześledzono na podstawie szczegółowej korelacji międzyotworowej, a następnie, wykorzystując dodatkowo analizę charakteru wykształcenia krzywych geofizyki otworowej, dokonano próby określenia zarysu architektury depozycyjnej. W celu odtworzenia środowiska sedymentacji na większym obszarze, posłużono się szczegółową interpretacją zdjęcia sejsmicznego 3D. Analiza form geoanomalii i badanie spójności zapisu sejsmicznego zaowocowało wydzieleniem różnych elementów paleomorfologii, takich jak: koryta, wały przybrzeżne, stożki i litosomy.
Integrated analysis of seismic anomalies together with well logging data interpretation was a basis for reconstruction of processes of depositional environment of the Miocene succession, in the Carpathian Foredeep. Vertical and lateral variability of sediments was analysed using detailed wells correlation. Then, using the analysis of a shape of well logs, the outline of depositional architecture was determined. In order to determine the sedimentology environment in a larger area, the detailed 3D seismic data results interpretation was used. The analysis of geoanomalies forms and coherence of seismic record resulted in differentiation of various paleomorphology elements such as: channels, subaqueous levees, fans and lithosom.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2010, 439 (2); 417--421
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sukcesja osadowa miocenu w rejonie zrębu Ryszkowej Woli (obszar Sieniawa-Rudka), zapadlisko przedkarpackie: wyniki facjalnej i stratygraficznej interpretacji danych wiertniczych oraz sejsmiki 3D
Miocene succession at the Ryszkowa Wola high (Sieniawa-Rudka area), Carpathian Foredeep Basin: facies and stratigraphic interpretation of wellbore and 3D seismic data
Autorzy:
Mastalerz, K.
Wysocka, A.
Krzywiec, P.
Kasiński, J.
Aleksandrowski, P.
Papiernik, B.
Ryzner-Siupik, B.
Siupik, J.
Powiązania:
https://bibliotekanauki.pl/articles/2074444.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
miocen
zapadlisko przedkarpackie
sedymentacja
analiza stratygraficzna
analiza facjalna
dane wiertnicze
dane sejsmiczne 3D
Carpathian Foredeep
Miocene
sedimentation
sequence stratigraphy
facies analysis
well log interpretation
3D seismic data
Opis:
The Polish Carpathian Foredeep Basin (PCFB) is the northern compartment of a foreland basin system that surrounds the Carpathian orogenic belt. The axis of the eastern part of the PCFB plunges gently towards SE, where the Miocene basin-fill succession exceeds 2000 metres in thickness. The Miocene succession developed in shallow marine ramp settings and is subdivided into 3 lithostratigraphic units: sub-evaporitic (onshore-to-nearshore), evaporitic, and supra-evaporitic (offshore-to-estuarine). The upper unit includes a siliciclastic series (Upper Badenian–Sarmatian), which constitutes the main segment of the succession. It displays an asymmetric, shallowing-up trend, expressed by the following sequence: hemipelagic-turbiditic-deltaic-low-energy nearshore-to-estuarine facies associations. Sediment accummulation in the basin has been significantly overprinted by higher-frequency cyclicity and encloses several genetic stratigraphic sequences bounded by MFS surfaces. An early phase of the basin development was characterised by high-rate subsidence and slow-rate sedimentation (hemipelagic facies). The turbiditic facies association identified within the Sieniawa–Rudka area resulted from southward progradation of a submarine fan/prodeltaic depositional system, mainly fed from the northern and north–western continental margins of the basin. An overall SE–ward palaeoslope inclination controlled the main phase of the deltaic progradation, which had gradually replaced the turbiditic systems. The late deltaic phase was characterised by ENE palaeotransport directions. The final phase of the basin filling took place in shallow-water, low-energy, nearshore-to-estuarine environments. In the early stage of the basin development, a complex system of NW–SE elongated basement pop-ups and flower structures in the Miocene succession were produced by reactivation and inversion of Mesozoic basement faults. The growth of these positive structures modified local subsidence patterns and affected the organisation of depositional systems of the siliciclastic series. A narrow elevation of the RyszkowaWola High (RWH) gradually grew above one of the pop-up structures. Complex structural-stratigraphic hydrocarbon traps developed along the RWH, due to interaction between the growth of local faults and the development of the successive depositional systems. Tidally-modified delta-top and estuarine facies are the most common hydrocarbon hosts within individual sequences of the „deltaic” segment of the succession..
Źródło:
Przegląd Geologiczny; 2006, 54, 4; 333-342
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 16

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