Miechów海槽下马斯特里赫特阶钙质超微化石生物地层学和古地理意义(波兰南部)

IF 1.1 4区 地球科学 Q3 GEOLOGY
Urszula Ciołko, E. Gaździcka
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引用次数: 0

摘要

: Ciołko, U.和Gaździcka, E. 2022。波兰南部Miechów海槽下马斯特里赫特地区钙质纳米化石生物地层学及其古地理意义。地质学报,72(3),331-352。华沙。通过对波兰南部Miechów海槽Pełczyska剖面钙质纳米化石的生物地层学分析,发现该剖面覆盖了马斯特里赫特海槽下部。UC16b TP特提斯亚区是根据Broinsonia parca constricta Hattner, Wind and Wise, 1980, Uniplanarius triidus (Stradner) Hattner和Wise在Wind and Wise, 1983中重新加工的遗骸以及Eiffellithus eximius (Stover) Perch-Nielsen, 1968中同时缺少的遗骸而指定的。研究剖面还跨越了Zeugrhabdotus praesigmoides Burnett, 1997年的LO和predissphaera mgayae Lees, 2007年的FO (UC16 S3北带亚带)之间的区间。纳米化石组合的定量分析表明,冷水种占主导地位(高达50%),如Micula decussata Vekshina (1959), predissphaera spp., Arkhangelskiella spp., Calculites obscurus (Deflandre) Prins and Sissingh in Sissingh(1977)和Lucianorhabdus cayeuxii Deflandre(1959)。在马斯特里赫特早期,研究区域更多地受到来自北方省的冷水团的影响,而不是来自特提斯省的温水。冷水类群的显著优势和predissphaera白垩纪(Arkhangelsky) Gartner, 1968)的增加也支持了马岛早期气候变冷的假设。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Calcareous nannofossil biostratigraphy and paleogeographic significance in the lower Maastrichtian of the Miechów Trough (southern Poland)
: Ciołko, U. and Gaździcka, E. 2022. Calcareous nannofossil biostratigraphy and paleogeographic significance in the lower Maastrichtian of the Miechów Trough (southern Poland). Acta Geologica Polonica , 72 (3), 331–352. Warszawa. Biostratigraphic analysis of calcareous nannofossils from the Pełczyska section in the Miechów Trough (south - ern Poland) has revealed that the entire section covers the lowermost Maastrichtian. The UC16b TP Tethyan subzone is designated based on the presence of Broinsonia parca constricta Hattner, Wind and Wise, 1980 , reworked remains of Uniplanarius trifidus (Stradner) Hattner and Wise in Wind and Wise, 1983 and the simul - taneous lack of Eiffellithus eximius (Stover) Perch-Nielsen, 1968. The studied section spans also the interval between the LO of Zeugrhabdotus praesigmoides Burnett, 1997 and the FO of Prediscosphaera mgayae Lees, 2007 (UC16 S3 Boreal subzone). Quantitative analysis of nannofossil assemblages has shown the dominance of cold water species (up to 50%), e.g., Micula decussata Vekshina, 1959, Prediscosphaera spp., Arkhangelskiella spp., Calculites obscurus (Deflandre) Prins and Sissingh in Sissingh, 1977 and Lucianorhabdus cayeuxii Deflandre, 1959. In the early Maastrichtian, the studied area was more influenced by cool water masses from the Boreal Province rather than by warm water from the Tethyan Province. The significant predominance of cold water taxa and the elevated presence of Prediscosphaera cretacea (Arkhangelsky) Gartner, 1968 also supports the hypothesis of climate cooling in the early Maastrichtian.
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来源期刊
Acta Geologica Polonica
Acta Geologica Polonica 地学-地质学
CiteScore
1.70
自引率
18.20%
发文量
0
审稿时长
>12 weeks
期刊介绍: Acta Geologica Polonica publishes original and review papers on all aspects of basic geology, with particular focus on sedimentology, stratigraphy, palaeontology, regional geology, structural geology, and regional petrography. All papers are published in English.
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