Autor: Gaigalas, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Chronology of buried soils, forest fires and extreme migration of dunes on the Kuršių nerija spit (Lithuanian coast)
Autorzy:: Gaigalas, A.
Pazdur, A.
Powiązania:: https://bibliotekanauki.pl/articles/294885.pdf
Data publikacji:: 2008
Wydawca:: Stowarzyszenie Geomorfologów Polskich
Tematy:: migration of dunes
forest fires
soil
Lithuanian coast
Źródło:: Landform Analysis; 2008, 9; 187-191
1429-799X
Pojawia się w:: Landform Analysis
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Entropy of Pleistocene till composition as an indicator of sedimentation conditions in Southern Lithuania
Autorzy:: Baltrūnas, V.
Gaigalas, A.
Powiązania:: https://bibliotekanauki.pl/articles/2058783.pdf
Data publikacji:: 2004
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Southern Lithuania
Pleistocene till
relative entropy
sedimentology
Opis:: The two most complete and stratigraphically most reliably identified Pleistocene sections in Southern Lithuania were chosen as the object of this study. Variations in relative entropy were assessed from the average data on the grain size,mineral and petrographic composition of the individual stratigraphically identified till beds. Data obtained in the current study showed that the relative entropy of till composition, which characterises the even distribution of the components according to relative parameters (such as the fraction intervals and, the number of minerals), indicates that the till composition was modified by matter dispersion (mixing) and condensation (concentration). The relative entropy of the content of different till components (grain size fractions, heavy and light minerals, petrographic groups) in glacial units of various ages is different and indicates different parameters of glacial dynamics and different routes of glacier movement. Also, the relative entropy of till composition in the direction of glacier movement shows repetitive patterns, which are predetermined by loading of the bottom layers of the glacier with till material up to its maximum concentration, followed by their settling. Ice loading with till material proceeds by grinding and mixing the transit and indigenous exarational material until the till mixture reaches its maximum density (volumetric weight) and becomes close to the optimum mixture.
Źródło:: Geological Quarterly; 2004, 48, 2; 115--122
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The last Middle Pleistocene interglacial in Lithuania: insights from ESR-dating of deposits at Valakampiai, and from stratigraphic and palaeoenvironmental data
Autorzy:: Molodkov, A.
Bolikhovskaya, N.
Gaigalas, A.
Powiązania:: https://bibliotekanauki.pl/articles/2059885.pdf
Data publikacji:: 2002
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Lithuania
Middle Pleistocene
Snaigupele Interglacial
OIS 7
ESR dating
mollusc shells
palynostratigraphy
correlation
Opis:: The penultimate (Snaigupele, oxygen isotope stage (OIS) 7) interglacial has proved controversial in Lithuania because of palynological similarities between Holsteinian, SnaigupĹlĹ and Eemian interglacial deposits in the Lithuanian terrestrial record. Furthermore, no warm interglacial period has been recognised between the Holsteinian (OIS 11) and Eemian (OIS 5) in the neighbouring Baltic countries, Estonia and Latvia. In this study, we provide electron spin resonance (ESR) dates of two freshwater mollusc shell samples collected from lacustrine sediments at the Valakampiai site which are thought to be Snaigupele in age. Shells analysed gave mutually consistent dates of 116.0 š 10.8 and 110.0 š 12.1 ka with an average age of about 113.3 ka. These dates are thus significantly younger than OIS 7, and more closely correspond to OIS 5 (Eemian). The possible occurrence of this late Middle Pleistocene OIS 7 interglacial episode in Lithuania and other Baltic countries is evaluated with reference to the nearest and most complete long terrestrial sequences from the central and southeastern parts of the East-European Plain.
Źródło:: Geological Quarterly; 2002, 46, 4; 363-375
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The trace fossil Asthenopodichnium lithuanicum isp. nov. from Late Neogene brown-coal deposits, Lithuania
Autorzy:: Uchman, A.
Gaigalas, A.
Melešyte, M.
Kazakauskas, V.
Powiązania:: https://bibliotekanauki.pl/articles/2059531.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Lithuania
Neogene
ichnology
taxonomy
brown coal
stiffground
Opis:: A new fresh water ichnospecies of Asthenopodichnium Thenius, A. lithuanicum, is distinguished by its pouch-like shape with a J-shaped limb that is distinctly wider than the remaining part of the pouch. It was produced in a stiffground at the top of a mineral-rich brown-coal layer of Neogene age by a suspension feeder forming pouch-like domichnial cavities. Mayfly larvae may perhaps be considered as candidates for its tracemaker. Other arthropods (amphipods, isopods) are also possibilities. The brown-coal layer was exposed during the Neogene by river erosion, was colonized by the tracemaker (locally two colonization events took place) and in the Pliocene covered by distal crevasse and river channel sands.
Źródło:: Geological Quarterly; 2007, 51, 3; 329-336
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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