Results 81 to 90 of about 34,448 (232)

Paleozoic Tectonic Setting and Paleogeographic Evolution of the Qin‐Fang Region, Southern South China Block: Detrital Zircon U‐Pb Geochronological and Hf Isotopic Constraints

Geochemistry, Geophysics, Geosystems, 2018
The thick Silurian siliciclastic sedimentary rocks in the Qin‐Fang region contrasting with their absence in surrounding regions have long been an enigma for the early Paleozoic geology of South China. Here we employ detrital zircon U‐Pb geochronology and
Xinchang Zhang, Yuejun Wang, Peter D. Clift, Yi Yan, Yuzhi Zhang, Le Zhang   +5 more
doaj   +1 more source

Ar-40/Ar-39 dating of mesothermal, orogenic mineralization in a low-angle reverse shear zone in the Lower Palaeozoic of the Anglo-Brabant fold belt, Belgium [PDF]

, 2002
A
Boven, A., Dewaele, Stijn, Muchez, Ph.
core   +2 more sources

Detrital zircon from a late Paleozoic accretionary complex of SW Iberia (Variscan Belt): History of crustal growth and recycling at the Rheic convergent margin [PDF]

, 2012
In this study we present new U-Pb ages of detrital zircons from greywackes and quartzites of the Pulo do Lobo Anticline (PLA) that have been interpreted to represent a Late Paleozoic accretionary complex in SW Iberia.
Chichorro, M., Drost, K., Pereira, M.F., Silva, J.B., Sola, R.   +4 more
core  

Facies-succession and architecture of the third-order sequences and their stratigraphic framework of the Devonian in Yunnan-Guizhou-Guangxi area, South China

Journal of Palaeogeography, 2013
The Caledonian orogeny at the end of the Silurian resulted in great changes in the palaeogeography in the Yunnan-Guizhou-Guangxi area of South China; the continental area of the Early Paleozoic evolved into the extensive Dian-Qian-Gui Sea in the Late ...
Mei Mingxiang, Maurice E. Tucker
doaj   +1 more source

Paleotemperature models of the Phanerozoic foci of hydrocarbon generation for wells belonging to the Severo-Kalinov and Kalinov fields in Tomsk region [PDF]

Нефтегазовая геология: Теория и практика
This paper suggests a new method of coupled paleotemperature modelling of the Nyurol Paleozoic basin and the blanketing younger Mesozoic-Cenozoic basin. Modelling show that under the geological and geophysical circumstances of the Severo-Kalinov and the ...
Krutenko M.F., Lobova G.
doaj  

The Age, Stratigraphic Relationships, and Correlation of the Lower Part of the Olentangy Shale of Central Ohio [PDF]

, 1970
Author Institution: Department of Geology, Ohio Wesleyan University, Delaware, OhioThe Olentangy Shale of central Ohio (Delaware County) is made up of two distinct stratigraphic units separated by an unconformity.
Tillman, John R.
core  

Rediscovery of the Type Specimens of the Sarcopterygian Fishes Onychodus sigmoides and Onychodus hopkinsi from the Devonian of Ohio, USA

Diversity
John Strong Newberry described three species of the lobe-fin fish Onychodus (Osteichthyes, Sarcopterygii, Onychodontida) based on parasymphysial teeth, or tusks.
Loren E. Babcock
doaj   +1 more source

Middle Devonian dipnoan tooth-plates from Estonia

Journal of Vertebrate Paleontology, 1999
ABSTRACT Middle Devonian dipnoan tooth-plates have been known for an hundred and sixty years. However, although gross morphology has been described, there are still several difficulties with these descriptions. The best known Middle Devonian species is Dipterus valenciennesi from Scotland.
Campbell, Kenton, Barwick, Richard
openaire   +1 more source

PRE-DEVONIAN, BRABANTIAN DEFORMATION WITHIN THE SOUTHERN CONDROZ INLIER (RUISSEAU DES CHEVREUILS, DAVE, BELGIUM) [PDF]

, 2007
A
Debacker, Timothy, Vanmeirhaeghe, Jan
core   +1 more source

Devonian Spores in a Middle Silurian Reef [PDF]

Grana Palynologica, 1963
Abstract A subsurface core from the Tilden reef (Middle Silurian) in southern Illinois contains a large and diverse assemblage of hystrichospherids and plant spores. The plant spores are restricted to sinuous cracks filled with calcite and brownish-gray clay.
openaire   +1 more source