Results 111 to 120 of about 2,124,047 (278)

Report of Investigations No. 123 Petroleum Potential of the Palo Duro Basin, Texas Panhandle [PDF]

, 1982
UT ...
Dutton, Shirley P., Goldstein, Arthur G., Ruppel, Stephen C.   +2 more
core   +1 more source

A >300 Myr Long‐Lived Topographic Highland Along the Northern North China Craton Margin Driven by Multistage Continental Convergence

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Topographic highlands commonly develop along convergent plate boundaries through long‐term processes such as subduction and continental collision. However, the pre‐Cenozoic mountain‐building history of deep‐time orogenic systems in northeastern Pangaea remains poorly constrained due to later tectonic overprinting and denudation.
Heng Peng, Licheng Wang, Jianqiang Wang, Yazuo Niu, Yahui Yue, Jingbo Sun, Bitian Wei, Chiyang Liu, Massimiliano Zattin, Lin Ding   +9 more
wiley   +1 more source

U-Pb zircon age of Ordovician magmatism in the Albera Massif (Eastern Pyrenees)

Geologica Acta, 2011
New geochronological data from the Albera Massif confirm the presence of an Early – Mid Ordovician igneous event (472 - 465Ma) recorded in the pre-Variscan rocks of the Pyrenees.
M. LIESA TORRE-MARÍN, J. CARRERAS, P. CASTIÑEIRAS GARCÍA, J.M. CASAS, M. NAVIDAD, M. VILÀ   +5 more
doaj  

Late Ordovician cephalopods from Morocco and their implications

Swiss Journal of Palaeontology
The present paper describes the latest cephalopod fauna from the Upper Ordovician in the Anti-Atlas region, Morocco. Two species are reported herein belonging to two genera including one new species, Tafadnatoceras elfechtense sp. nov.
Xiang Fang, Björn Kröger, Kun Liang, Qing Chen, Jiaqi Song, Lan Jiang, Yaoyan He, Chenggang Wang, Xiongwei Zeng, Hao Liu, Kai Wei, Fafu Wu, Wenkun Qie   +12 more
doaj   +1 more source

The appearance of Rosenella (stromatoporoid sponge) in Baltica: new species from the Pirgu Stage (Katian, Upper Ordovician) of Estonia [PDF]

Estonian Journal of Earth Sciences
The Katian Age, part of the Late Ordovician Epoch, was a period of significant stromatoporoid diversification. However, their fossil record is often less continuous, hindering our understanding of their diversity and diversification.
Juwan Jeon, Ursula Toom
doaj   +1 more source

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

Trans-Atlantic application of the Baltic Middle and Upper Ordovician carbon isotope zonation

, 2015
Application of the recently introduced Baltic δ 13 C isotope zonation to a composite North American Darriwilian through Hirnantian succession shows that in most intervals there is good trans-Atlantic agreement not only between the isotope zones but also ...
S. M. Bergström, M. Saltzman, S. Leslie, A. Ferretti, Seth A. Young   +4 more
semanticscholar   +1 more source

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

Traces of explosive volcanic eruptions in the Upper Ordovician of the Siberian Platform

, 2014
Ordovician K-bentonite beds have a long history of investigation all around the world. They have been reported from Gondwana, the Argentine Precordillera, the Yangtze Platform, Laurentia, Baltica, and numerous terrains between Gondwana and Baltica, which
W. Huff, A. Dronov, B. Sell, A. V. Kanygin, T. Gonta   +4 more
semanticscholar   +1 more source

Geology of the Peebles Quadrangle, Adams County, Ohio [PDF]

, 1985
Author Institution: Department of Geology, Eastern Kentucky UniversityThe rock sequence exposed in the Peebles quadrangle, Adams Co., Ohio, consists of over 240 m of Ordovician through Mississippian age rocks.
Swinford, E. Mac
core