Results 31 to 40 of about 1,497,171 (212)

New data on acritarchs from the Upper Ordovician of the Tungus basin, Siberian Platform [PDF]

Estonian Journal of Earth Sciences, 2014
Distinctive late Ordovician acritarch assemblages have been discovered for the first time from about a 100 m sedimentary succession exposed along the Bol¢shaya Nirunda River in Siberia.
Elena Raevskaya, Andrei Dronov
doaj   +1 more source

Ordovician and Silurian Formations of the Baltic Syneclise (NE Poland): An Organic Geochemistry Approach

Lithosphere, 2022
The Baltic Syneclise is one of the Paleozoic basins along the western margin of the East European Craton. Commercial amounts of hydrocarbons have been found onshore and offshore in the Middle Cambrian sandstones and Upper Ordovician limestone reefs.
P. Kosakowski, A. Zakrzewski, M. Waliczek   +2 more
doaj   +1 more source

Towards a revised Sandbian conodont biozonation of Baltica [PDF]

Estonian Journal of Earth Sciences, 2023
One of the key objectives of the studies proposed by the Ordovician Subcommission is the improvement of regional stratigraphy for further advancements in global correlation.
Tõnn Paiste, Peep Männik, Svend Stouge, Tõnu Meidla   +3 more
doaj   +1 more source

Darriwilian Saucrorthis Fauna: implications for the Great Ordovician Biodiversification Event (GOBE) [PDF]

Estonian Journal of Earth Sciences, 2014
The Saucrorthis Fauna is a brachiopod-dominated shelly fauna developed in relatively deeper-water benthic regimes of a few peri-Gondwana terranes (e.g.
Renbin Zhan, Xiaocong Luan, Bing Huang, Yan Liang, Guangxu Wang, Yi Wang   +5 more
doaj   +1 more source

The Durness Group of NW Scotland: a stratigraphical and sedimentological study of a Cambro-Ordovician passive margin succession [PDF]

, 2010
The Cambrian to Ordovician Durness Group was deposited on the Scottish sector of the passively-subsiding, continental margin of the Laurentian craton, and now forms part of the Hebridean terrane, lying to the west of the Moine Thrust zone.
Raine, Robert James
core   +7 more sources

Lithofacies paleogeography of the Ordovician and its petroleum exploration potential in the Middle-Upper Yangtze Area, South China

Petroleum
Based on the drilling, logging and field analysis, this paper discusses the lithofacies paleogeography of the Ordovician and its petroleum potential in the Middle-Upper Yangtze Area, South China.
Wenzheng Li, Hua Jiang, Xiaodong Fu, Yuan He, Mingfeng Gu, Nan Su, Shiyu Ma, Shugen Liu, Yongxiao Wang, Xuefei Yang   +9 more
doaj   +1 more source

Hydrocarbon discovery in the Ordovician dolomite reservoirs in the Maigaiti slope, Southwest Depression of the Tarim Basin, and its exploration implications

Natural Gas Industry B, 2017
A high-yield gas flow is produced from the dolomite reservoirs of the Ordovician Penglaiba Fm in Well Luosi 2 in the Southwest Depression of the Tarim Basin, recording as the most important major oil and gas discovery in the Maigaiti slope in recent 20 ...
Haifeng Cui, Lei Tian, Jun Liu, Nianchun Zhang   +3 more
doaj   +1 more source

The Role of Regional and Local Structure in a Late Ordovician (Edenian) Foreland Platform-to-Basin Succession Inboard of the Taconic Orogen, Central Canada

Geosciences, 2013
The Upper Ordovician (Edenian) Lindsay Formation of the Ottawa Embayment represents the final stage of carbonate platform development in the Taconic foreland periphery inboard of the northern Appalachian orogen.
George R. Dix, Ruth Gbadeyan
doaj   +1 more source

Diagenetic evolution of key minerals and its controls on reservoir quality of Upper Ordovician Wufeng-Lower Silurian Longmaxi shale of Sichuan Basin

Shiyou shiyan dizhi, 2021
Based on core, thin section, scanning electron microscopy observations, X-ray diffraction analysis, as well as carbon and oxygen isotopes and energy spectrum analysis of carbonate rocks, the quartz, feldspar, pyrite, carbonate and clay minerals in shale ...
Ruyue WANG, Zongquan HU, Hanyong BAO, Jing WU, Wei DU, Pengwei WANG, Zeyang PENG, Ting LU   +7 more
doaj   +1 more source

Reconstructing a Super-Eruption From the Upper Ordovician Period in the Eastern Pyrenees, Spain [PDF]

Lithosphere
The Pyrenean basement rocks, NE of the Iberian Peninsula, southwestern Europe, include evidence of several pre-Variscan magmatic episodes which indicate the complex geodynamic history of this segment of the northern Gondwana margin from late ...
Joan Marti, Josep M. Casas, Josep A. Muñoz   +2 more
doaj   +1 more source