Results 51 to 60 of about 3,248,245 (131)

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

Rise of the earliest tetrapods: an early Devonian origin from marine environment. [PDF]

PLoS ONE, 2011
Tetrapod fossil tracks are known from the Middle Devonian (Eifelian at ca. 397 million years ago--MYA), and their earliest bony remains from the Upper Devonian (Frasnian at 375-385 MYA).
David George, Alain Blieck
doaj   +1 more source

Interpretable Machine Learning for Estimated Ultimate Recovery (EUR) Prediction for the Bakken Tight Oil Play, Williston Basin, USA

Journal of Petroleum Geology, EarlyView.
ABSTRACT Estimated Ultimate Recovery (EUR), often calculated from production decline curve analysis (DCA), is a key indicator of long‐term well performance in petroleum reservoirs, including unconventional plays such as the Bakken Formation in the Williston Basin in the northern United States, which is the objective of this study.
Yeonpyeong Jo, Palash Panja, Rasoul B. Sorkhabi, Milind Deo   +3 more
wiley   +1 more source

Lithofacies palaeogeography as a guide to petroleum exploration

Journal of Palaeogeography, 2013
Lithofacies palaeogeography as a guide to petroleum exploration is a very important topic. By using the following five exploration examples, this paper discusses the guide of lithofacies palaeogeography or of sedimentary facies to petroleum exploration ...
Feng Zengzhao, Bao Hongping, Jia Jinhua, Wang Yigang, Deng Xiuqin   +4 more
doaj   +1 more source

Middle to Late Devonian–Carboniferous collapse basins on the Finnmark Platform and in the southwesternmost Nordkapp basin, SW Barents Sea [PDF]

Solid Earth, 2018
The SW Barents Sea margin experienced a pulse of extensional deformation in the Middle–Late Devonian through the Carboniferous, after the Caledonian Orogeny terminated.
J.-B. P. Koehl, J.-B. P. Koehl, S. G. Bergh, S. G. Bergh, T. Henningsen, J. I. Faleide, J. I. Faleide   +6 more
doaj   +1 more source

Contourite erosional and depositional features of the Maastrichtian chalk on Jasmund peninsula (Rügen island, NE Germany)

Sedimentology, EarlyView.
ABSTRACT Seismic‐scale features such as deeply incised submarine valleys and mounded drifts together with ichnological features indicative of discontinuous sedimentation and erosional episodes have recently been documented from the Upper Cretaceous chalk in the southern Baltic Sea area.
Marcel Schlembach, Heiko Hüneke, Mike Reich, Svante Peters, Nele Ahlhaus, Sylvia Weinert, Arwed Gibb   +6 more
wiley   +1 more source

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

Conditions and timing for the precipitation of early marine diagenetic dolomite in the Triassic Dolomia Principale (northern Italy)

Sedimentology, EarlyView.
ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot, Giovanna Della Porta, Mathias Mueller, Fabrizio Berra, Benjamin F. Walter, Aratz Beranoaguirre, Sylvia Riechelmann, Oskar Schramm, Adrian Immenhauser   +8 more
wiley   +1 more source

Hidden Middle Devonian Magmatism of North-Eastern Siberia: Age Constraints from Detrital Zircon U–Pb Data

, 2020
We present new data on the tectonic evolution of north-eastern Siberia using an integrated provenance analysis based on U–Pb detrital zircon dating and sandstone petrography of Devonian sedimentary strata.
Victoria B. Ershova, Andrei V. Prokopiev, Andrei K. Khudoley   +2 more
core   +1 more source

First record of the Devonian lycophyte Leclercqia from South America [PDF]

, 1994
A single leafy stem from the Middle or lowermost Upper Devonian Campo Chico Formation, Sierra de Perija, western Venezuela, is the first record of the important Devonian herbaceous lycophyte Leclercqia from South America, usually considered as part ...
Berry, Christopher Mark, Christopher M. Berry   +1 more
core   +1 more source