Results 81 to 90 of about 63,261 (236)

Lower Mississippian Lithostratigraphy, Northern Arkansas [PDF]

open access: yes, 1976
Lower Mississippian lithostratigraphic units in northern Arkansas are (ascending order) the Bachelor, St. Joe, and Boone Formations. These formations disconformably overlie Middle Ordovician to Upper Devonian strata and are overlain disconformably by ...
Manger, Walter L., Shanks, Jack L.
core   +2 more sources

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) [PDF]

open access: yes, 2018
The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by the occurrence of the unexpected 2008 Mw 7.9 Wenchuan and 2013 Mw 6.6 Lushan earthquakes in the central and southern parts of the ...
A. Robert   +80 more
core   +3 more sources

A geological fence diagram for England and Wales [PDF]

open access: yes, 2012
This report contains a brief description of the data and methodology used to compile the National Geological Fence Diagram (NGFD). The NGFD comprises a network of intersecting geological cross-sections covering England and Wales, to a minimum depth of
Ambrose, K.   +7 more
core  

Stratigraphic significance of Devonian brachiopods of the Urals

open access: yesЛитосфера, 2017
The article considers the history of the formation of the regional stratigraphic scale of the Devonian system of the Urals, historically developed on the basis of the study of benthic fauna (mainly brachiopods).
Anita G. Mizens, Larisa I. Mizens
doaj   +1 more source

Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea [PDF]

open access: yesActa Palaeontologica Polonica
This study describes an assemblage of Dzieduszyckia brachiopods preserved in sedimentary barite deposits from the Famennian, Upper Devonian of Nevada, USA.
RUSSELL S. SHAPIRO
doaj   +1 more source

Nueva información palinológica sobre la Formación Poti (Viseano superior) en el arroyo Roncador, Cuenca Parnaíba, noreste de Brasil [PDF]

open access: yes, 2014
Se presenta el resultado del análisis palinológico de seis muestras de superficie de la Formación Poti expuesta en el arroyo Roncador (Jerumenha, Piauí), noreste de Brasil.
Di Pasquo Lartigue, Maria, Iannuzzi, R.
core   +1 more source

Devonian

open access: yes, 1997
During Early and Middle Devonian time, carbonate successions were deposited on the Mackenzie Platform in the east, on the Yukon Stable Block in the west, and on two small isolated platforms: the White Mountains Platform in the north and the Royal Mountain Platform in the south. During the same time interval, successions consisting largely of shale were
openaire   +1 more source

From Siliciclastics to Carbonates and Black shales: Deciphering Sedimentary Continuity and Discontinuity in the Devonian Landscapes of the Volga-Ural Petroleum Province

open access: yesGeoresursy
Analyses of the three predominant types of sedimentation – siliciclastic, carbonate and black shale – revealed their discontinuity/continuity across various facies environments within the Middle and Late Devonian of the central part of the Volga-Urals ...
V. V. Silantiev   +2 more
doaj   +1 more source

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