Results 21 to 30 of about 2,421 (198)
A pelagic Upper Devonian sequence in Sarıyer, İstanbul
TURKISH JOURNAL OF EARTH SCIENCES, 2020 The Palaeozoic sequence in the Istanbul region is made up of a continuous transgressive sedimentary series extending from Ordovician continental clastic rocks to Lower Carboniferous turbidites. The middle part of this sequence consists predominantly of carbonates ranging from shallow marine Upper Silurian limestones to latest Devonian to earliest ...
Aral I. OKAY +2 more
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On the upper limits of the Devonian System [PDF]
Proceedings of the Geologists' Association, 1870 n ...
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Journal of Palaeogeography, 2013 The Caledonian orogeny at the end of the Silurian resulted in great changes in the palaeogeography in the Yunnan-Guizhou-Guangxi area of South China; the continental area of the Early Paleozoic evolved into the extensive Dian-Qian-Gui Sea in the Late ...
Mei Mingxiang, Maurice E. Tucker
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Structure and mineralogical composition of the tuff horizon of Petrikov potash deposit
Журнал Белорусского государственного университета: География, геология, 2019 Integrated data of the structure and mineralogical composition of the marking tuff horizon in the Upper-Devonian bed of the North-Shestovich synclinal zone are presented in this paper.
Vladimir P. Samodurov +3 more
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DEVONIAN CONODONTS FROM SPITI HIMALAYA, INDIA
Rivista Italiana di Paleontologia e Stratigrafia, 2023 The present paper describes the lower Upper Devonian conodont fauna from the upper units of Muth Formation, Spiti Valley, Himalaya.
A. D. AHLUWALIA +3 more
doaj
, 1997 The Upper Devonian and Carboniferous comprise a southern and a northern succession separated by the Ancestral Aklavik Arch. The southern succession, deposited in the Mackenzie Basin and the Prophet Trough, consists of Frasnian to Gzhelian strata. The northern succession comprises Viséan to Moscovian strata that onlapped the Yukon Fold Belt from the ...
B C Richards, E W Bamber, J Utting
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The Anatomical Record, EarlyView.Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley +1 more source
AGNI-DRILL - A COMPLEX DRILLING FLUID FOR DRILLING IN KYNOVSK MUDSTONES
Известия высших учебных заведений: Нефть и газ, 2016 Oil pools developed by PJSC «Tatneft» are mainly confined to the Devonian deposits, the top of which is represented by Kynovsk argillites. The construction of a horizontal wellbore in the Upper Devonian terrigenous strata (D0) is complicated by the ...
L. B. Huzina, R. A. Usmanov, S. I. Golyb
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Provenance reconstructions. Article 1. Mineralogical and petrographic approaches and methods
Литосфера, 2020 Research subject. This is the first in the series of four articles, which aims to review existing provenance reconstruction tools.Methods and materials.
A. V. Maslov +3 more
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The Anatomical Record, EarlyView.Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro +1 more
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