Results 81 to 90 of about 1,498 (118)

Geochemical Characteristics of Meso-Neoproterozoic-Cambrian Potential Shale Source Rocks and Oil Source Correlation for Paleo-Reservoirs in the Cambrian Formations of the Zhongtiaoshan Area in Southern East of the Ordos Basin. [PDF]

ACS Omega
Liu H, Li C, Feng S, Ma G, Chen X, Huang X.   +5 more
europepmc   +1 more source

New evidence for the Hirnantian (Upper Ordovician) in Belgium?

Carnets de Geologie, 2005
Vanmeirhaeghe, J., Yans, Johan, Préat, A., Verniers, J.   +3 more
openaire   +1 more source

Combining soft-bodied and three-dimensional fossils to reveal evolutionary modifications in early lingulellotretid brachiopods. [PDF]

Commun Biol
Chen F, Zhang Z, Holmer LE, Li G, Topper TP, Song B, Zhang Z.   +6 more
europepmc   +1 more source

Study on the Development, Evolution, and Main Controlling Factors of Gypsum Moldic Vugs in Ma5₄ ¹, Central Ordos Basin. [PDF]

ACS Omega
He J, Tang C, Zhao G, Du J, Mei X, Zhang Z, Zhao Z, Yao J.   +7 more
europepmc   +1 more source

Early colonization of the deep-sea bottom-The protracted build-up of an ecosystem. [PDF]

Proc Natl Acad Sci U S A
Buatois LA, Mángano MG, Paz M, Minter NJ, Zhou K.   +4 more
europepmc   +1 more source

Oil-Source Correlation in the Ordovician and Carboniferous Strata from the Southwestern Ordos Basin (China): Implications for a Multivariate Statistical Approach. [PDF]

ACS Omega
Shangguan J, Su K, Huang J, Sun Y, Xu Y, Li J.   +5 more
europepmc   +1 more source

U-Pb Detrital Zircon Geochronology and Its Tectonic Implications for the Middle Devonian at the Northwestern Margin of the Yangtze Block. [PDF]

ACS Omega
Guo T, Yang WF, Zeng L, Wang C.
europepmc   +1 more source

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Upper Ordovician of Central Texas

AAPG Bulletin, 1953
ABSTRACT Discovery of Upper Ordovician strata in the Llano uplift of central Texas is here reported. These rocks, named the Burnam limestone, are considered to be correlative with some part of the Richmond group, because of the presence in them of Halysites (Catenipora), Streptelasma rusticum, Austinella, Mcewanella raymondi ...
Virgil E. Barnes, Preston E. Cloud, Helen Duncan   +2 more
openaire   +1 more source

Kope Formation (Upper Ordovician): Ohio and Kentucky

Science, 1964
Eden-like strata near Maysville, Kentucky, may be correlated with the Eden and lower Fairview formations of Cincinnati. To avoid the name Eden, which has stadial connotation, these rocks are included in the Kope formation, defined as medium-bedded limy shales (mean clastic ratio, 2.5 to 3.8) resting conformably between shaly Point Pleasant limestones ...
M P, Weiss, W C, Sweet
openaire   +2 more sources

Crinoids from the Upper Ashgill (Upper Ordovician) of Wales

Journal of Paleontology, 1993
A collection of small crinoids and crinoid debris from the Ashgill (Rawtheyan?) of Cnwce, near St. Clears, Dyfed, southwest Wales includes numerous crowns ofAithriocrinus strahanin. gen. and sp. incertae familiae, an indeterminate 10–armed camerate(?) and an indeterminate multiple-armed camerate.Aithriocrinus strahaniwas previously considered to be a ...
Stephen K. Donovan, Cornelis J. Veltkamp
openaire   +1 more source