Results 31 to 40 of about 1,498 (118)

Upper Ordovician conodonts in the Valbertad section

, 2017
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BAGNOLI GABRIELLA, FERRETTI ANNALISA, SIMONETTO LUCA, CORRADINI CARLO   +3 more
openaire   +4 more sources

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, Yan JF, Men YP, Yu Q, Liu W, Chen XW, Kang JW, Zhang HQ, Shen Y, Liu J.   +9 more
europepmc   +1 more source

On the Upper Ordovician unconformity in the Pyrenees

In recent years, contradictory reports about whether or not an unconformity exists at the base of the Upper Ordovician succession of the Pyrenees have been made. In the Cerdanya area (Central Pyrenees), good outcrop evidence for this unconformity is displayed at the base of the Rabassa conglomerates.
Casas Tuset, Josep Maria||, Fernández, Óscar||   +1 more
openaire   +1 more source

Bucaniidae (Gastropoda) from the Upper Ordovician of Norway

Norsk Geologisk Tidsskrift, 1999
Fourteen species of bellerophontoid gastropods of the Family Bucaniidae are described from the Upper Ordovician succession of the Oslo Region, Norway. Bucania sp. is compared with several species of Bucania that stand out morphologically by having a median dorsal carina, moderate to wide umbilici and an ornamentation consisting of crenulated growth ...
openaire   +1 more source

Organic matter accumulation under the Middle-Upper Ordovician tectonic transition on the western margin of the North China platform. [PDF]

Sci Rep
Li F, Zhang D, Huang Z, Chen X, Xie M, Zhang Q, Li F, Wang Q, Wang X, Liu W.   +9 more
europepmc   +1 more source

Cambrian to Upper Ordovician carbonate platform

, 1998
U Mayr, T de Freitas
openaire   +1 more source

Evidence for cryptic molting behavior in the trilobite Toxochasmops vormsiensis from the Upper Ordovician Katian Kõrgessaare Formation, Estonia. [PDF]

Naturwissenschaften
Bicknell RDC, Vargas-Parra EE, Landman NH, Pärnaste H.   +3 more
europepmc   +1 more source

Seismic attributes analysis and petrophysical modeling for reservoir characterization and prospect identification in the I/R oil fields, Murzuq Basin, Libya. [PDF]

Sci Rep
Negm AM, Haddad DH, Abdel-Fattah MI, Amir HS, Amir MA, Barakat MK, Reda M.   +6 more
europepmc   +1 more source

Volcanism and basalt weathering drove Ordovician climatic cooling. [PDF]

Nat Commun
Zhao H, Zhang L, Algeo TJ, Lyu Z, Wang X, Hao F.   +5 more
europepmc   +1 more source

Controls on hydrocarbon accumulation in ultra-deep carbonate reservoirs of the Ordovician Yingshan Formation, Catake Uplift, Tarim Basin. [PDF]

Sci Rep
Wang L, Yang R, Geng F, Jiang Z, Zhang H, Zhang Q.   +5 more
europepmc   +1 more source