Cyclostratigraphy of Pontian deposits of the Eastern Paratethys (Zheleznyi Rog section, Taman Region)

Rostovtseva, Yu. V.; Rybkina, Alena

doi:10.3103/s0145875214040103

Cited by 12 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Remarkably, the upper Maeotian pattern of both Popov Kamen and Zheleznyi Rog is very similar to those of Cerna and Cernișoara, being dominated almost entirely by a long normal polarity interval (P5n and Z2n in Figure 11). The lower/upper Maeotian transition closely corresponds in both sections to a reversed to normal polarity transition interpreted as the base of C3An (6.7 Ma; Trubikhin & Pilipenko, 2011;Rostovtseva and Rybkina, 2014). Correlating downwards result in two different age options for the Khersonian/Maeotian boundary: the polarity pattern of Zheleznyi Rog suggests a location in C3Br.1r at an age of 7.25 Ma; the pattern in Popov Kamen best fits to C3Br.3r at an age of 7.5 Ma (assuming that the short subchron C3Br.1n has been missed in the section; Filippova & Trubikhin, 2009).…”

Section: Euxinic Basinmentioning

confidence: 57%

The end of the Great Khersonian Drying of Eurasia: Magnetostratigraphic dating of the Maeotian transgression in the Eastern Paratethys

et al. 2018

View full text Add to dashboard Cite

Central Eurasia underwent significant palaeoclimatic and palaeogeographic transformations during the middle to late Miocene. The open marine ecosystems of the Langhian and Serravallian seas progressively collapsed and were replaced in the Tortonian by large endorheic lakes. These lakes experienced major fluctuations in water level, directly reflecting the palaeoclimatic conditions of the region. An extreme lowstand of the Eastern Paratethys lake (−300 m) during the regional Khersonian stage reveals a period of intensely dry conditions in Central Eurasia causing a fragmentation of the Paratethys region. This period of “Great Drying” ended by a climate change towards more humid conditions at the base of the Maeotian stage, resulting in a large transgressive event that reconnected most of the Paratethyan basins. The absence of a robust time frame for the Khersonian–Maeotian interval hampers a direct correlation with the global records and complicates a thorough understanding of the underlying mechanisms. Here we present a new chronostratigraphic framework for the Khersonian and Maeotian deposits of the Dacian Basin of Romania, based on integrated magneto‐biostratigraphic studies on long and continuous sedimentary successions. We show the dry climate conditions in the Khersonian start at 8.6–8.4 Ma. The Khersonian/Maeotian transition is dated at 7.65–7.5 Ma, several million years younger than previous estimates. The Maeotian transgression occurs later (7.5–7.4 Ma) in more marginal and shallower basins, in agreement with the time transgressive character of the flooding. In addition, we date a sudden water level drop of the Eastern Paratethys lake, the Intra‐Maeotian Event (IME), at 6.9 Ma, and hypothesize that this corresponds to a reconnection phase with the Aegean basin of the Mediterranean. Finally, we discuss the potential mechanisms explaining the particularities of the Maeotian transgression and conclude that the low salinity and the seemingly “marine influxes” most likely correspond to episodes of intrabasinal mixing in a gradual and pulsating transgressive setting.

show abstract

Section: Euxinic Basinmentioning

confidence: 57%

The end of the Great Khersonian Drying of Eurasia: Magnetostratigraphic dating of the Maeotian transgression in the Eastern Paratethys

et al. 2018

View full text Add to dashboard Cite

show abstract

“…). This allows us to tentatively link changes in the deep Black Sea to events on the Black Sea coast of Russia (Krijgsman et al ., ; Rostovtseva and Rybkina, ) and to the Mediterranean MSC (Roveri et al ., ). A temperature index given by the ratio between thermophilous elements and steppe elements is used to investigate continental climatic change (Traverse, ; Popescu et al ., ).…”

Section: Messinian Events In the Black Seamentioning

confidence: 99%

Messinian events in the Black Sea

et al. 2015

View full text Add to dashboard Cite

Past hydrological interactions between the Mediterranean Sea and Black Sea are poorly resolved due to complications in establishing a high-resolution time frame for the Black Sea. We present a new greigite-based magnetostratigraphic age model for the Mio-Pliocene deposits of DSDP Hole 380/380A, drilled in the southwestern Black Sea. This age model is complemented by 40 Ar/ 39 Ar dating of a volcanic ash layer, allowing a direct correlation of Black Sea deposits to the Messinian salinity crisis (MSC) interval of the Mediterranean Sea. Proxy records divide these DSDP deposits into four intervals: (i) Pre-MSC marine conditions (6.1-6.0 Ma); (ii) highstand, fresh to brackish water conditions (~6.0-5.6 Ma); (iii) lowstand, fresh-water environment (5.6-5.4 Ma) and (iv) highstand, fresh-water conditions (5.4-post 5.0 Ma). Our results indicate the Black Sea was a major fresh-water source during gypsum precipitation in the Mediterranean Sea. The introduction of Lago Mare fauna during the final stage of the MSC coincides with a sea-level rise in the Black Sea. Across the Mio-Pliocene boundary, sea-level and salinity in the Black Sea did not change significantly.

show abstract

“…The final disconnection with the Mediterranean Sea in the Zhelezny Rog section is recorded by the disappearance of nannoplankton and marine diatom species directly above diatomite N (the top of Braarudosphaera bigelowii Beds) (Radionova and Golovina, 2011;Golovina et al, 2019). According to Rostovtseva, the geological age of the level with diatomite N is estimated at 5.88 Ma (Rostovtseva and Rybkina, 2014;see Fig. 34).…”

Section: Pontian Regional Stagementioning

confidence: 97%

“…The most complete reference section of the Pontian of the Taman Peninsula is the Zhelezny Rog (Popov et al, 2016), which is characterized by paleomagnetic and cyclostratigraphic data (Filippova and Trubikhin, 2009;Vasiliev et al, 2011;Rostovtseva and Rybkina, 2014;Popov et al, 2016).…”

Section: Pontian Regional Stagementioning

confidence: 99%

“…Correlation. According to paleomagnetic data, the base of the Kimmerian Regional Stage, which is understood as the base of the Azovian Beds, lies in the uppermost strata of reverse polarity chron C3r, right below subchron C3n.4n (Thvera) and is dated to 5.25 Ma, while the base of unconformity under the Azovian beds in the Zhelezny Rog section was dated to 5.2 Ma, according to cyclostratigraphic data (Rostovtseva and Rybkina, 2014Rybkina, , 2017. The base of the Kamysh-Burun beds of the Middle Kimmerian lies above the Thvera subchron, in reverse polarity subchron C3n.3r, and below the following normal polarity subchron C3n.3n (Sidufjall) and is dated to 4.9 Ma.…”

Section: Kimmerian Regional Stagementioning

confidence: 99%

See 1 more Smart Citation

Neogene Regional Scale of the Eastern Paratethys, Stratigraphy and Paleontological Basis

et al. 2022

Self Cite

View full text Add to dashboard Cite

The stratigraphic scale of the Eastern Paratethys is revised based on a study of the Neogene stratotype and reference sections, their biotic characteristics, and paleomagnetic and sedimentological data. New data on the correlation of its regional subdivisions with the Central Paratethys and Mediterranean stratotypes are presented. The section "Regional Stage Scale of the Eastern Paratethys" considers the history of identification and a brief description of the horizons of the regional scale, which later became regional stages, as well as their historical stratotypes and lectostratotypes, and division into Beds and Substages. The section "History of Separate Biota Groups" provides reviews on the most important groups of fauna, phytoplankton, and terrestrial vegetation, as well as on magnetostratigraphy, the possibility of correlation and dating of sections based on these data, and comparison with the Central Paratethys and stratotypes of the Mediterranean. In conclusion, the main results of the revision of the stratigraphic scheme of the Neogene of the Eastern Paratethys are given.

show abstract

Cyclostratigraphy of Pontian deposits of the Eastern Paratethys (Zheleznyi Rog section, Taman Region)

Cited by 12 publications

References 8 publications

The end of the Great Khersonian Drying of Eurasia: Magnetostratigraphic dating of the Maeotian transgression in the Eastern Paratethys

The end of the Great Khersonian Drying of Eurasia: Magnetostratigraphic dating of the Maeotian transgression in the Eastern Paratethys

Messinian events in the Black Sea

Neogene Regional Scale of the Eastern Paratethys, Stratigraphy and Paleontological Basis

Contact Info

Product

Resources

About