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Isfara Formation

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Journal Article
Published: 01 February 2018
Clays and Clay Minerals (2018) 66 (1): 43–60.
... glauconite ( Figures 6b and 6c ). Hanabad Fm (green clay) : More mixed layer minerals and glauconite were detected in the green clay of the Hanabad Fm than in samples of the Rishtan and Isfara formations ( Figure 5 ). A broad reflection at 10.57 Å (air-dried), which split into two reflections 9.98 Å...
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Journal Article
Published: 01 October 2011
Russ. Geol. Geophys. (2011) 52 (10): 1075–1091.
... by findings of Ephedra and Chenopodiaceae pollen. Occasional cells of conjugates of the primitive order Mesotaeniales were found in spore-and-pollen macerates. Small Cribrononion rischtanicum shells, first described in the Isfara Formation, Middle Asia, were found by Beniamovskii in disoxic clay interbeds...
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Series: Geological Society
Published: 01 January 2017
EISBN: 9781862399594
... with the Qimugen Formation in the Tarim Basin and assigned an Upper Paleocene–Lower Eocene age based on fossil assemblages. The Fergana Group overlies the Sogdiysk Group, and is composed of the Alai, Turkestan, Rishtan, Isfara, Hanabad and Sumsar formations. Based on bivalve assemblages, Bosboom et al . (2015...
Image
δ 18 O cc  records of Lower Cenozoic sedimentary sequences in the Tajik and...
in > Geology
Published: 29 April 2020
.—Alai; Tr.—Turkestan; Rs.—Rishtan; Is.—Isfara; Sm.—Sumsar; Shury.—Shurysay; M.—Member; Fm.—Formation; Qm.—Qimugen; Gj.—Gaijitage; Kr.—Karataer; Ul.—Ulagen; VPDB—Vienna Peedee belemnite.
Series: Geological Society
Published: 01 January 2017
EISBN: 9781862399594
... sediments grade into playa evaporite beds and red-coloured fluvial floodplain mudstones and sandstones, typical of the Shurysay Formation (Fig. 5e – g ). The observed green marly mudstone lithologies are characteristic of the marine Isfara, Hanabad and Sumsar formations in southern Kyrgyzstan ( Pomazkov...
Series: Geological Society
Published: 01 January 2017
EISBN: 9781862399594
... (Fig. 13b ). The marls and limestones of the Isfara Formation represent the youngest marine sediments in this part of the Tajik Basin before the beginning of a persistent phase of terrigenous deposition. The last marine incursion occurred at the Eocene–Oligocene transition ( Bosboom 2013...
Journal Article
Journal: Geology
Published: 29 April 2020
Geology (2020) 48 (7): 728–732.
....—Alai; Tr.—Turkestan; Rs.—Rishtan; Is.—Isfara; Sm.—Sumsar; Shury.—Shurysay; M.—Member; Fm.—Formation; Qm.—Qimugen; Gj.—Gaijitage; Kr.—Karataer; Ul.—Ulagen; VPDB—Vienna Peedee belemnite. ...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1976
AAPG Bulletin (1976) 60 (10): 1704–1766.
... and has been confirmed by a second well. The producing formation is a massive Upper Cretaceous to Eocene limestone. Wells drilled in recent years in the same part of the Adriatic by AGIP-Shell were reported to have found large reserves of 15-16° oil in the same formation, and it was announced that a 10...
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