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Wyświetlanie 1-5 z 5
Tytuł:
Morphotype variation of orthophragminids as a palaeoecological indicator: A case study of Bartonian limestones, Pod Capkami Quarry, Tatra Mts, Poland
Autorzy:
Machaniec, E.
Jach, R.
Gradziński, M.
Powiązania:
https://bibliotekanauki.pl/articles/191441.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Larger benthic foraminifera
orthophragminids
morphotype
transgression
palaeoenvironment
Eocene
Tatra Mts.
Western Carpathians
Opis:
Nummulites-Discocyclina bioclastic packstone and Discocyclina rudstone occur in the transgressive sequence of the Middle–Upper Eocene deposits in the Tatra Mts. The succession of the studied facies is a direct response to a rapid environmental change, related to progressive deepening. Facies transition from Nummulites- Discocyclina bioclastic packstone of proximal mid-ramp to Discocylina rudstone of distal mid- and outer-ramp is an exemplary record of a deposition during deepening conditions. Increasing of diversity of the genus Discocyclina, decreasing of diversity of other foraminifera up the section and vertical variation of orthophragminid mor- photypes from the ovate- through saddle- to the disc-shaped tests are related to deepening and shadowing of the depositional environment.
Źródło:
Annales Societatis Geologorum Poloniae; 2011, 81, No 2; 199-205
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biostratygrafia mikropaleontologiczna utworów kredy górnej i miocenu w wierceniu "Bibice" (okolice Krakowa)
Micropaleontological biostratigraphy of the Upper Cretaceous and Miocene deposits in "Bibice" borehole (Kraków area)
Autorzy:
Zapałowicz-Bilan, B.
Pilarz, M.
Machaniec, E.
Powiązania:
https://bibliotekanauki.pl/articles/183417.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
biostratygrafia
mikropaleontologia
kreda późna
miocen
okolice Krakowa
biostratigraphy
micropaleontology
Late Cretaceous
Miocene
Kraków area
Opis:
Lower Campanian marls and marly opokas with cherts ("Bibice" borehole, Kraków vicinity) are rich in benthic forams (mainly Stensioeina and Gavelinella species) and rare planktic ones (Hedbergella). The overlying Miocene deposits (Kłodnik and Skawina beds), are developed as conglomerates (equivalent of fresh-water marls in Krakow region) which are completely devoid of microfossils, but younger clays are full of the Badenian forams.
Źródło:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2009, 35, 2/1; 95-103
0138-0974
Pojawia się w:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Campanian–Maastrichtian foraminiferal stratigraphy and palaeoenvironment of the Lower Tar Member in the Wadi Tar section, Western Sirte Basin (Libya)
Autorzy:
Tshakreen, S. O.
Gasiński, M. A.
Machaniec, E.
Mącznik, A.
Powiązania:
https://bibliotekanauki.pl/articles/191767.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Southern Tethys
Western Sirte Basin
Lower Tar Member
foraminifera
biostratigraphy
palaeoenvironment
late Campanian–Maastrichtian
Opis:
Upper Campanian–Maastrichtian sections on the western flank of the Hun Graben in the Western Sirte Basin (WSB) are displaying two major type facies based on the foraminiferal assemblages. The first one indicates open-marine to outer-shelf conditions, and is represented by numerous bathy-pelagic planktonic foraminiferal species referable to the Radotruncana calcarata, Globotruncana aegyptiaca and the lower part of the Gansserina gansseri Zone (all late Campanian).The second type facies indicates an inner-shelf environment and is represented in the middle-upper part of the Gansserina gansseri Zone (early Maastrichtian) and Racemiguembelina fructicosa (late Maastrichtian) dominated by epi-pelagic planktonic and large benthic foraminifers. Large benthic foraminiferal index species Siderolites calcitrapoides Lamarck and Omphalocyclus macroporus (Lamarck) occur in abundance by the middle–late Maastrichtian. Correlation between planktonic foraminiferal zonation and large benthic foraminiferal zonation is given. An open-marine to outer-shelf environment passed into shallower marine conditions during the late Campanian–early Maastrichtian to late Maastrichtian, then a slight deepening and again shallowing is noticed.
Źródło:
Annales Societatis Geologorum Poloniae; 2017, 87, 4; 349-362
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Injection dykes as evidence of Campanian synsedimentary tectonics on the Kraków Swell, southern Poland
Autorzy:
Kołodziej, B.
Szulc, J.
Machaniec, E.
Kędzierski, M.
Duda, M.
Powiązania:
https://bibliotekanauki.pl/articles/191882.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
injections dykes
synsedimentary tectonics
biostratigraphy
Late Cretaceous
Campanian
Kraków Swell
Polska
Opis:
The topmost part of the Oxfordian limestones, building the Zakrzówek Horst in Kraków, is featured by a network of minute fissures, filled with Upper Cretaceous limestones. Fissures are dominantly subhorizontal, anastomosing and polygonal in plane. They are filled with white limestones representing mostly foraminiferal- calcisphere wackestones, with subordinate amount of quartz pebbles and fragments of stromatolite coming from the latest Turonian-?Early Coniacian conglomerate overlying Oxfordian basement. The fissures are seismically- induced injection dykes. In contrast to gravitationally-filled neptunian dykes the recognised injection dykes were filled by overpressured soft sediments. Foraminifera within some dykes are abundant, and dominated by planktonic forms, which indicate the Early/Late Campanian age (Globotruncana ventricosa and Globotruncanita calcarata zones) of the filling, and hence date also the synsedimentary tectonics. Abundant and diversified keeled globo- truncanids in the Campanian of the Kraków region are recognised for the first time. Other important findings at the studied section include karstic cavities featuring the surface of the Oxfordian bedrock filled with conglomerates of the latest Turonian-?Early Coniacian age based on foraminifera and nannoplankton, and lack of Santonian deposits, which elsewhere are common in the Upper Cretaceous sequences in the Kraków region. The discovered Campanian dykes provide new evidence for the Late Cretaceous tectonic activity on the Kraków Swell related to the Subhercynian tectonism, which resulted among others in stratigraphic hiatuses and unconformities characte- ristic of the Turonian-Santonian interval of this area.
Źródło:
Annales Societatis Geologorum Poloniae; 2010, 80, No 3; 285-301
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Eocene flora and trace fossils from the Hruby Regiel section in the Tatra Mountains (Poland): Taxonomic revision of the Wiktor Kuźniar fossil plant collection
Autorzy:
Worobiec, G.
Jach, R.
Machaniec, E.
Uchman, A.
Worobiec, E.
Powiązania:
https://bibliotekanauki.pl/articles/139288.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fossil leaves
fossil fruits
trace fossils
foraminifera
biostratigraphy
palaeoecology
palaeoclimate
Late Eocene
Western Carpathians
skamielina
liść
owoc
skamieniałości śladowe
otwornice
biostratygrafia
paleoekologia
Karpaty Zachodnie
eocen
Opis:
Latest Eocene plant macrofossils and trace fossils collected a century ago by Wiktor Kuźniar are revised and their stratigraphical and palaeoecological meaning is re-considered. They derive from marine limestones and marls cropping out on the northern slope of the Hruby Regiel mountain in the Western Tatra Mountains. Leaves belonging to the families Fagaceae and Lauraceae and fruits of the palm Nypa are recognized. The co-occurrence of the planktonic foraminifer taxa Chiloguembelina cf. gracillima and Globigerinatheca cf. index and fruits of Nypa suggests a latest Eocene age of the fossil flora. The plant assemblage is typical of paratropical or subtropical evergreen forests in a warm and humid subtropical climate, recent counterparts of which occur in southeast Asia. The presence of Nypa is characteristic of mangroves. The good state of preservation of the leaves suggests coastline proximity during sedimentation of the plant-bearing deposits.
Źródło:
Acta Geologica Polonica; 2015, 65, 2; 203-226
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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