Results 101 to 110 of about 6,336 (226)
Geochemical and Geological Characteristics of the Upper Ordovician-Lower Silurian Shales in the Upper Yangtze Basin, South China: Implication for the Shale Gas Exploration. [PDF]
ACS Omega, 2020 Sun YY +9 more
europepmc +1 more source
Marine shales directly overlying lower Hirnantian (uppermost Ordovician) glacially related sediments in Mauritania (North-West Africa) have produced a rich graptolite fauna spanning the Ordovician-Silurian boundary in an area of high palaeolatitude.
Underwood, Charlie J. +2 more
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Upper Ordovician trilobites from northern Yukon
, 1966 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Lenz, Alfred C., Churkin, Michael
openaire +2 more sources
Rock magnetism of the Upper Ordovician Zhaolaoyu Formation of the southern Ordos Basin
地质科技通报Objective Palaeomagnetic methods can be used to quantitatively constrain the Early Palaeozoic palaeo-position of the North China Block (NCB), which provides a crucial scientific basis for researching the evolution of the Proto-Tethyan Orogeny and the ...
Shuqi LAN +14 more
doaj +1 more source
Upper Ordovician ecology of the central Appalachians
, 1970 The upper Reedsville Formation and portions of equivalent Martinsburg strata (Upper Ordovician) in the central Appalachians provide one of the earliest known examples of a prolific clastic-facies invertebrate fauna with a distinctly modern aspect…
Bretsky, Peter William, Jr.
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The palaeobiology of the panderodontacea and selected other euconodonts [PDF]
, 1992 The apparatus composition and three-dimensional architecture of the coniform conodont genus Panderodus (Llanvim - Givetian) has been reconstructed.
Sansom, Ivan James
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Geology of the Ordovician rocks between Leadhills and Abington, Lanarkshire
, 2015 NE-SW faults in the Abington area of the Northern Belt of the Southern Uplands define blocks up to 3.2 km wide. The strata, folded and locally overturned, young predominantly to the NW but blocks to the SW contain younger sequences.
Hepworth, Barry C.
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地质科技通报Objective The Well Tashen 5 that was completed in 2021 has a burial depth of 9 017 m and is currently the deepest drilling well in Asia. It is also the first hydrocarbon breakthrough in the dolomite sectionof Upper Sinian at a depth of 8 780-8 840 m in ...
Mingxia LUO +4 more
doaj +1 more source
The paleomagnetism of the Upper Ordovician Fairview Formation [PDF]
, 1977 A paleomagnetic study was conducted involving the Upper Fairview (Upper Ordovician, Maysvillian) Formation and Lower Fairview Formation. The purpose of this study was to determine the possibility of measuring the geomagnetic polarity reversals occurring ...
Bartman, Robert C.
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Brachiopods of the upper Ordovician Mežciems Formation
, 2014 Aija Valentīna Zāne, 2014. Brahiopodi augšējā ordovika Mežciema svītā. Bakalaura darbs. Latvijas Universitāte, Rīga. Bakalaura darba mērķis ir raksturot augšējā ordovika Mežciema svītas brahiopodu faunu no 5 urbumiem Austrumlatvijā un precizēt svītas ...
Zāne, Aija Valentīna
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