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Tarkhanian

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Journal Article
Published: 01 January 2022
Russ. Geol. Geophys. (2022) 63 (1): 13–22.
...S.V. Popov; V.G. Pronin Abstract —We present data on the most complete Neogene sections and wells of northern Ustyurt and the Cis-Aral area. Miocene deposits in the northern chinks and the North Ustyurt depression are composed of sediments of the Tarkhanian, Chokrakian, Karaganian, Konkian...
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Schematic map of distribution of the <span class="search-highlight">Tarkhanian</span>-Chokrakian facies and thick...
Published: 01 January 2022
Fig. 4. Schematic map of distribution of the Tarkhanian-Chokrakian facies and thicknesses in the North Ustyurt depression. 1 , sandy deposits; 2 , red-colored clays; 3 , variegated clays; 4 , dominantly gray-colored clays; 5 , isopachites for thicknesses of Tarkhanian–Chokrakian deposits
Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.173.01.13
EISBN: 9781862394216
... Abstract The Neogene marginal succession of the Eastern Paratethys (EP) crops out along the southern Black Sea coast and in the Marmara region of Turkey, and provides important clues to the tectono-sedimentary and palaeoceanographic conditions. In the Tarkhanian stage, the southern margin...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 2017
AAPG Bulletin (2017) 101 (3): 289–319.
... Tarkhanian) is chosen as 0 m. The thickness of the Maikop Group was determined to be approximately 600 m (2000 ft). This value exceeds earlier estimates, which were on the order of 350–400 m (1150–1310 ft) (e.g., Akhmetiev et al., 1995 ; Zaporozhets, 1999 ). In the case of the Pshekha Formation, the higher...
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Lithological log of the Maikop Group exposed along the Belaya River togethe...
Published: 01 March 2017
Figure 4. Lithological log of the Maikop Group exposed along the Belaya River together with carbonate contents, element ratios and bulk geochemical parameters. The top of the Maikop Group (base Tarkhanian [Tarkh]) is chosen as 0 m. Chok = Chokrakian; dol = dolomite; Eoc. = Eocene; Fm. = Formation
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Regional setting of Paratethys during middle Miocene, and cross section sho...
Published: 07 December 2018
marginal areas (PB—Pannonian Basin; TB—Transylvanian Basin; DB—Dacian Basin; BSB—Black Sea basin; CSB—Caspian Sea basin). EP—Eastern Paratethys. Regional stages: Tk—Tarkhanian; Kg—Karaganian.
Journal Article
Journal: Geology
Published: 07 December 2018
Geology (2019) 47 (1): 35–38.
... marginal areas (PB—Pannonian Basin; TB—Transylvanian Basin; DB—Dacian Basin; BSB—Black Sea basin; CSB—Caspian Sea basin). EP—Eastern Paratethys. Regional stages: Tk—Tarkhanian; Kg—Karaganian. ...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2010
GSA Bulletin (2010) 122 (3-4): 465–486.
..., with Cretaceous rocks to the north ( Plate 2 ). At ∼45.5°E the oldest units exposed are Tarkhanian and Chokrakian, with Tarkhanian, Chokrakian, and Sarmatian strata absent east of ∼46.5°E. Exposures east of 47°E are predominantly Akchagyl and Apsheron, with exposures of Akchagyl decreasing eastward until...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP464.2
EISBN: 9781786203724
.... Furthermore, salinity proxies (e.g. TOC/S ratios: Berner 1984 ) have been used together with information on salinity variations in the Eastern Paratethys (e.g. Popov et al. 2010 ) ( Fig. 2 ) to further confine the age of the sediments. Nevertheless, ages of Upper Solenovian–Tarkhanian units remain...
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Journal Article
Published: 01 July 2006
Journal of Paleontology (2006) 80 (4): 684–699.
..., is usually simply referred to as a transitory episode of the Paratethyan history between the fully marine Tarkhanian and Chokrakian and the definitive brackish Maeotian and Pontian s.l. To date, the patterns and trends of environmental evolution of this basin during the Sarmatian s.l. have been interpreted...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP340.11
EISBN: 9781862395886
... a, columns 1–3 and Fig.  4 a). Middle Miocene: Tarkhanian, Chokrakian, Karaganian and Konkian regiostages – Late Miocene: Early and Middle Sarmatian regiostage (Fig. 3a, columns 1–3, Fig. 4b) This time a sublatitudinal...
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Series: Geological Society, London, Special Publications
Published: 01 January 2017
EISBN: 9781862399600
... formations, our data show that the amount of erosion in South Crimea in post-Eocene time reached 1–5 km. Field data indicate that in the area of Cape Fiolent, shallow water carbonates of Tarkhanian–Sarmatian (Middle–Upper Miocene) age lie sub-horizontally on Jurassic formations along an angular...
Series: Geological Society, London, Special Publications
Published: 01 January 2017
EISBN: 9781862399600
... of the section (the Lower Miocene Sakaraulian and Kotsakhurian formations) shows a considerable increase in coarse-grained, locally cross-bedded sandstones ( Robinson et al . 1997 ). The Middle Miocene rocks (thickness 500–700 m) of the Tarkhanian formation are represented mainly by argillites, sandy argillites...
Series: Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP285.18
EISBN: 9781862395336
.... 13. Paleogeographic scheme of Kerch peninsula in Chokrakian time (after Peryt et al. 2004 b ). 1, Land; 2, relatively deep-water part of Chokrakian sea; 3, shore line of late Tarkhanian sea; 4, assumed boundary of area of late Chokrakian gypsum accumulation; 5, areas where late Chokrakian...
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Series: Geological Society, London, Special Publications
Published: 31 March 2023
DOI: 10.1144/SP523-2021-73
EISBN: 9781786209559
... Paratethys ( Sachsenhofer et al. 2018 a ) occurred during the Kozakhurian stage. The basin suddenly flipped to a full marine connection at the Kozakhurian–Tarkhanian boundary ( c. 14.85 Ma: Palcu et al. 2019 ). It is hypothesized that a significant sea-level rise changed the exchange regime...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP464.1
EISBN: 9781786203724
... Paratethys, except the Alpine Foreland Basin, and for a short time a seaway connecting the Eastern Paratethys with the Indian Ocean opened again. The establishment of aerobic conditions enabled the benthic fauna to inhabit most parts of the Eastern Paratethys during Tarkhanian time. Amount and type...
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Series: Geological Society, London, Special Publications
Published: 10 October 2017
DOI: 10.1144/SP427.5
EISBN: 9781862399594
... of locally high total organic carbon (TOC) occur within the Maykop and Diatom formations, and constitute the main source rocks for the hydrocarbon accumulations of the SCB. The age of the boundary between the Maykop Series and the overlying Middle–Late Miocene Tarkhanian and Diatom Series is believed...