Results 201 to 210 of about 9,274 (231)

High-Resolution Geochemical Analysis of Controls on Organic Matter Accumulation in the Middle-Upper Devonian Horn River Group

2020
Organic carbon-rich mudstones, or ‘black shales’, record highly anomalous perturbations of local or earth systems at critical times in earth history. Paleoenvironmental parameters, including primary productivity, redox conditions, and sedimentation rate, have been widely recognized as the controls for organic matter (OM) accumulation in shales. However,
openaire   +1 more source

CHEMOSTRATIGRAPHY OF THE MIDDLE-UPPER DEVONIAN BLOCHER MEMBER (LOWERMOST NEW ALBANY SHALE) AT GALLATIN, TENNESSEE

Geological Society of America Abstracts with Programs, 2022
Annette Weldon, James Zambito, Pat McLaughlin   +2 more
openaire   +1 more source

Upper Eifelian and Givetian (Middle Devonian) conodont sequence at Renanué (Aragonian Pyrenees, Spain): a relevant section for Givetian Chronostratigraphy

Historical Biology, 2022
Jau-Chyn Liao, JOSÉ Ignacio Valenzuela-Ríos   +1 more
exaly  

New finds of middle-upper Devonian radiolarians in the Rudnyi Altai region

Doklady Earth Sciences, 2009
M. S. Afanas’eva, E. O. Amon, Ya. M. Gutak   +2 more
openaire   +1 more source

The palynology of the Middle–Upper Devonian (Givetian–Frasnian) in the Łysogóry-Radom and Lublin basins, south-central Poland

Palynology, 2023
Marcelina Kondas, Paweł Filipiak
exaly  

Geochemical characteristics of the Upper Devonian Shetianqiao Formation in the Shaoyang sag of Xiangzhong depression from Middle Yangtze area, South China: Implications for the depositional environment and organic matter enrichment

Palaeogeography, Palaeoclimatology, Palaeoecology, 2021
Baomin Zhang, Shu Jiang, Zhanhong Liu
exaly  

Middle-Upper Devonian series boundary as an example of intent and reality in biostratigraphic zonation

Newsletters on Stratigraphy, 1988
Charles A. Sandberg, Willi Ziegler, Pierre Bultynck   +2 more
openaire   +1 more source

Upper Givetian and Frasnian (Middle and Upper Devonian) conodonts from Ampriú (Aragonian Pyrenees, Spain): global correlations and palaeogeographic relations

Palaeontology, 2012
Jau-Chyn Liao, JOSÉ Ignacio Valenzuela-Ríos   +1 more
exaly  

New Spiriferids (Brachiopoda) from the Upper Devonian of Middle Timan

Paleontological Journal, 2012
N V Olenêva, Olenêva N V
exaly  

Carbon isotope chemostratigraphy and precise dating of middle Frasnian (lower Upper Devonian) Alamo Breccia, Nevada, USA

Palaeogeography, Palaeoclimatology, Palaeoecology, 2009
Michael M Joachimski
exaly