Diatom Biostratigraphy on the Generic Level

Jouse, A.P.

doi:10.2307/1485389

Cited by 25 publications

(26 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Jousé [35] made an ecological-stratigraphical review of the diatoms characteristic of the Sarmatian, Maeotian and Pontian in the Taman and Kerch sections. She recorded for the first time the oceanic diatom Denticula lauta in the Chokrakian of the Panagia section (V.V.…”

Section: Diatomsmentioning

confidence: 99%

Middle-Upper Miocene stratigraphy of the Taman Peninsula, Eastern Paratethys

et al. 2012

View full text Add to dashboard Cite

Abstract:The stratigraphy of the Taman Peninsula is defined using the sections at Zelensky Hill -Panagia, Popov Kamen, Taman and Zheleznyi Rog. The stratigraphy is constructed from distribution of mollusks, foraminifers, nannofossils, diatoms, and organic-walled phytoplankton, as well as incorporating paleomagnetic data. The occurrence of oceanic diatom species in the Middle-Upper Sarmatian, Maeotian and Lower Pontian makes a direct correlation possible between the sections studied, the Mediterranean basin and oceanic zonation. The new data on planktonic and benthic biotic groups suggests a pulsating connection of the Eastern Paratethys with the open marine basins, especially during transitional intervals within constant environments. Comprehensive studies of the Chokrakian-Kimmerian microbiota provide evidence for several levels of marine microbiotic associations that are related to short-term marine invasions. The biotic and paleomagnetic data of the Taman Peninsula sections give a more comprehensive, but sometimes a controversial picture on the Eastern Paratethys history and the nature of its relationship with the adjacent marine basins.

show abstract

Section: Diatomsmentioning

confidence: 99%

Middle-Upper Miocene stratigraphy of the Taman Peninsula, Eastern Paratethys

et al. 2012

View full text Add to dashboard Cite

show abstract

“…In the closely located Taman and Popov Kamen' sections the sediments of Unit II are missing or are strongly reduced, and the Maeotian-Pontian boundary actually corresponds to that between Unit I and Unit III. According to the diatom and nannofossil record, the top of Unit I marks the termination of a relatively free communication with the Mediterranean and corresponds to the top of the Cymatosira savtchenkoi Beds of the Thalassiosira maeotica Zone (Jouse 1949;Kozyrenko & Radionova 2002). In the Zheleznyi Rog section this boundary occurs beneath the thick diatomite "A".…”

Section: Resultsmentioning

confidence: 99%

“…In the Zheleznyi Rog section this boundary occurs beneath the thick diatomite "A". It was suggested as the Maeotian-Pontian boundary by siliceous plankton paleontologists and lithologists who used this group of biota (Jouse 1949;Kozyrenko & Radionova 2002;Rostovtseva 2009). However, a high-resolution research revealed this level to be located considerably below the boundary proposed by Andrusov (1903), which was based on the appearance of brackish-water endemics characteristic of the Pontian.…”

Section: Resultsmentioning

confidence: 99%

“…The objectives of our research was stratigraphic subdivision of the sequences (Taman, Popov Kamen, and Zheleznyi Rog) of the Upper Maeotian-Lower Pontian of the Taman Peninsula by microplankton. And therefore we accept that the stratigraphic range of the Upper Maeotian according to the regional diatom scale (Jouse 1949;Kozyrenko & Radionova 2002) corresponds to the Beds with the Cymatosira savtchenkoi of the Thalassiosira maeotica Zone. The Lower Pontian corresponds to Beds with the Actinocyclus octonarius.…”

Section: Geological Settingmentioning

confidence: 88%

See 1 more Smart Citation

Upper Maeotian-Lower Pontian "Transitional Strata" in the Taman Peninsula: stratigraphic position and paleogeographic interpretation

Radionova¹,

Golovina²

2011

Geologica Carpathica

View full text Add to dashboard Cite

Three sections (Taman, Popov Kamen, and Zheleznyi Rog) of the Upper Maeotian-Lower Pontian sediments of the Taman Peninsula (Eastern Paratethys) have been studied. The sequences represent continuous successions of the Maeotian and Pontian sediments. The transitional Upper Maeotian-Lower Pontian relatively deep-water sediments were formed at the time when Eastern Paratethys was connected with other marine basins. The facies are represented by thin clay layers interbedded with laminated diatomites and contain unusual diatom and nannofossil associations. The small size of coccoliths and the absence of zonal markers indicate that the influx of marine waters took place in the stressed conditions of a restricted basin. Diatom assemblages are more diverse and include the open-marine species Azpeitia aff. komurae and Thalassiosira maruyamica and marine endemics Actinocyclus aff. paradoxus, Rhizosolenia bezrukovii, Hemiaulus sp., Nitzschia miocenica of the tropical Nitzschia miocenica Zone and -the index species of next Thalassiosira convexa Zone appear in these part of the sections. Three stages of the Mediterranean marine invasion are distinguished; during the first one the connection between basins was rather permanent, for the two others its character became pulsing and not stable. The possible duration of the invasion is estimated from 6.4 to 6.1 Ma and belongs to the Early Messinian -to pre-evaporate deposits and lower part of lower evaporate deposits.

show abstract

“…Siliceous organisms were probably also associated with highly productive waters even during the Early Cretaceous, because the one site of well-preserved Albian-aged diatoms is a phosphorite deposit near Hannover (Jousé, 1978). Phosphorites are commonly linked to high productivity (Baturin and Bezrukov, 1979).…”

Section: Marine Productivitymentioning

confidence: 99%

A Reappraisal of Anoxia and Richness of Organic Material, with Emphasis on the Cretaceous North Atlantic

Waples¹

1985

Initial Reports of the Deep Sea Drilling Project

View full text Add to dashboard Cite

Accumulation of anoxic sediments in the North Atlantic from Barremian through Turanian time (Early to middle Cretaceous) was apparently controlled mainly by local conditions, although global climatic and oceanographic factors may have played a supporting role. Evidence does not support the popular hypothesis developed over the past few years of global or ocean-wide anoxia. The data contradicting this hypothesis are based on a reevaluation of criteria for identifying sediments that accumulated in anoxic water, a critical reappraisal of reported world-wide occurrences of anoxic sediments of these ages, and an examination of the spatial and temporal distribution of anoxic sediments in the North Atlantic and elsewhere. A model is proposed in which the earliest anoxic sediments of Cretaceous age in the North Atlantic were deposited in deep restricted basins. By middle Cenomanian time (about 97 m.y. ago), however, sluggish circulation had led to a gradual expansion of the oxygen-minimum layer, permitting deposition of anoxic sediments in nonbasinal settings. The expansion of the oxygen-minimum layer caused the calcite compensation depth to rise, promoting oxidation of organic carbon and causing contraction of the oxygen-minimum layer. The development of anoxia was thus self-damping. Anoxia effectively disappeared by early Senonian time (88 m.y. ago) when improved circulation created oceans more like those of the present. Some evidence indicates that enhanced productivity and upwelling may have played a local role in fostering anoxia, but most data suggest that worldwide marine productivity was generally not high during Early and middle Cretaceous time.

show abstract

Diatom Biostratigraphy on the Generic Level

Cited by 25 publications

References 1 publication

Middle-Upper Miocene stratigraphy of the Taman Peninsula, Eastern Paratethys

Middle-Upper Miocene stratigraphy of the Taman Peninsula, Eastern Paratethys

Upper Maeotian-Lower Pontian "Transitional Strata" in the Taman Peninsula: stratigraphic position and paleogeographic interpretation

A Reappraisal of Anoxia and Richness of Organic Material, with Emphasis on the Cretaceous North Atlantic

Contact Info

Product

Resources

About