Results 21 to 30 of about 1,392,562 (335)

Paleoenvironmental characteristics and organic matter enrichment mechanisms of the upper Ordovician-lower Silurian organic-rich black shales in the Yangtze foreland basin, South China

Frontiers in Earth Science, 2023
The Wufeng Formation-Longmaxi Formation (O3w-S1l1) black shales within the Yangtze foreland basin (South China) hold significant potential as unconventional oil and gas resources.
Liang Zhao, Yong Li, Chengjie Zou, Shaoze Zhao, Chaorong Wu   +4 more
doaj   +1 more source

Mechanism of Organic Matter Accumulation in Black Shales of the Yuertusi Formation in the Tarim Basin: Insights From Paleoenvironmental Variation During the Early Cambrian

Frontiers in Earth Science, 2022
The paleoenvironment during the Early Cambrian is closely related to the accumulation mechanism of organic matter (OM) from the Lower Cambrian black shales. However, paleoenvironment remains a controversial issue. Here, we reported a lot of detailed data
Yangyang Wang, Jianfa Chen, Weibing Shen, Min Li   +3 more
doaj   +1 more source

Earth’s Orbital Control on Organic Matter Enrichment in the Black Shales of the Wufeng–Longmaxi Formation in the Upper Yangtze Region, South China

Frontiers in Earth Science, 2022
China’s most successful horizon for shale-gas exploration and development is the Upper Ordovician Wufeng Formation through the Lower Silurian Longmaxi Formation in its Upper Yangtze Region. In this study, the Wufeng–Longmaxi Formation black shales in the
Shaoze Zhao, Shaoze Zhao, Yong Li, Yingjiao Xu, Leli Cheng, Zhou Nie, Liang Zhao   +6 more
doaj   +1 more source

Biogeomorphic recovery of a river reach affected by mining

Earth Surface Processes and Landforms, Volume 47, Issue 15, Page 3497-3514, December 2022., 2022
The Grogwynion reach of the River Ystwyth,Wales, affected by mining in the 19th and 20th centuries, has shown a progressive reversion to a sinuous single‐channel planform since 2001 from an active braided pattern. A critical factor has been a change in the extent and type of riparian vegetation occurring within the active zone of the river due to the ...
Martin Dawson, Angela Gurnell, John Lewin   +2 more
wiley   +1 more source

Volcanism‐Triggered Climatic Control on Late Cretaceous Oceans

Geochemistry, Geophysics, Geosystems, 2022
During the Late Cretaceous, Earth's climate oscillated between warm and cool states, and global oceans changed between anoxic and oxic conditions, resulting in black/gray shales and oceanic red beds (ORBs) deposition, respectively.
Ruiyang Sun, Hanwei Yao, Changzhou Deng, Stephen E. Grasby, Chengshan Wang, Xi Chen, Runsheng Yin   +6 more
doaj   +1 more source

Topographic thresholds for gully head formation in badlands

Earth Surface Processes and Landforms, Volume 47, Issue 15, Page 3558-3587, December 2022., 2022
Gully topographic threshold model was extended to badlands, on the basis of data collected in the Mediterranean environment in Italy and Spain, characterized by diversified climatic, lithological, geological and anthropogenic settings. Criteria for the attribution of curve number values has been more objectively defined in order to reduce arbitrariness
Mauro Rossi, Dino Torri, Sofie De Geeter, Cati Cremer, Jean Poesen   +4 more
wiley   +1 more source

Impact of Paleosalinity, Paleoredox, Paleoproductivity/Preservation on the Organic Matter Enrichment in Black Shales from Triassic Turbidites of Semanggol Basin, Peninsular Malaysia

, 2020
Turbidite-associated black shale of the Semanggol Formation is extensively distributed in the northwestern part of the Western Belt, Peninsular Malaysia. The black shale occurs as a dark grey to black and thick to medium-bedded deposit. It represents the
Z. Sajid, M. Ismail, M. Zakariah, H. Tsegab, J. G. Gámez Vintaned, Tanzila Hanif, N. Ahmed   +6 more
semanticscholar   +1 more source

Coherent changes in wood charcoals, site occupation and lithic technology across the MIS 4/3 transition at Klein Kliphuis rock shelter, South Africa

Journal of Quaternary Science, Volume 38, Issue 1, Page 38-48, January 2023., 2023
Abstract We explore the correspondence between changing palaeoenvironments, patterns of site use, and lithic technology at the rock shelter site Klein Kliphuis (South Africa) across the interval 65–55 000 years before present. This period coincides with the termination of Marine Isotope Stage (MIS) 4, and the disappearance of an iconic late Pleistocene
Alex Mackay, Caroline R. Cartwright
wiley   +1 more source

The distribution, hydrocarbon potential, and development of the Lower Cretaceous black shales in coastal southeastern China

Journal of Palaeogeography, 2017
Lower Cretaceous black shales in coastal southeastern China are of significance to the geological study of the Tethys and Pacific realms and to hydrocarbon exploration of southeastern China and East China Sea.
Guang Hu, Wen-Xuan Hu, Jian Cao, Ruo-Fei Yang, Hong-Yu Chen, Dong-Fang Zhao, Qian Pang, Hong-Yuan Wang, Xiu-Cheng Tan   +8 more
doaj   +1 more source

Geochemistry of Precambrian black shales from Ossa‑Morena Zone (Portugal): depositional environment and possible source of metals [PDF]

, 2023
The paleodepositional environments related to Ediacaran black shales from the Série Negra succession in Ossa-Morena tectonostratigraphic zone were investigated using their geochemical composition to identify the sedimentary sources and depositional ...
Flores, Deolinda, Laranjeira, Vanessa, Moreira, Noel, Nogueira, Pedro, Ribeiro, Joana   +4 more
core   +1 more source