Results 131 to 140 of about 40,268 (264)

Permian-Triassic boundary at El Antimonio, Sonora, Mexico

Revista Mexicana de Ciencias Geológicas, 2018
Newly discovered fossils indicate the Permian-Triassic boundary is in the lower Antimonio Formation. A brachiopod-dominated assemblage collected 40 m above the Monos-Antimonio Formations contact indicates a middle Permian (Guadalupian) age, and ...
Spencer G. Lucas, Barry S. Kues, John W. Estep, Carlos M. González-León   +3 more
doaj  

Inventory of Landslides Triggered by Heavy Rainfall in Fuling District, Chongqing, China, June 2019

Geoscience Data Journal, Volume 13, Issue 2, April 2026.
This study established a comprehensive landslide database triggered by a single rainfall event in Fuling District, Chongqing, China, to improve the accuracy of landslide prediction and early warning models. It provides scientific data support for disaster prevention and reduction in the study area.
Xue Zhiwen, Xu Chong, Yawei Xie, Xuning Nie, Xin Li, Zikang Xiao, Xiwei Xu, Zhiqiang Zhang, Dengjie Zhu, Bo Gong, Hourong Zhang   +10 more
wiley   +1 more source

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

Journal of Petroleum Geology, Volume 49, Issue 2, Page 433-447, April 2026.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos, Egberto Pereira, Lucas Pinto Heckert Bastos, René Rodrigues   +3 more
wiley   +1 more source

Early Permian to Middle Triassic Formation petroleum potentials of Sydney Basin, Australia: A geochemical analysis

Open Geosciences
The organic geochemical and petrological analyses of calculated vitrinite reflectance of the Early Permian to Middle Triassic Formation section of the Sydney Basin in Australia have revealed the source for the widely distributed oil and gas shows in the ...
Garba Terfa Elijah, Mustapha Khairul Azlan, Asiwaju Lanre, Mutari Lawal   +3 more
doaj   +1 more source

Glacier Retreat Amplifies Interannual Variability in Watershed Runoff, Organic Carbon and Nutrient Yields

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Glacier retreat is projected to drive major shifts in the hydrology of many high‐elevation and high‐latitude watersheds. In particular, future decreases in glacier runoff are hypothesized to reduce the stability of hydro‐biogeochemical export.
Amy D. Holt, Jason B. Fellman, Robert G. M. Spencer, Emily J. Whitney, Croix Flypaa, David V. D’Amore, Eran Hood   +6 more
wiley   +1 more source

Radar Specularity Content Indicates a Strong Geothermal Heat Flow Gradient in Antarctica's South Pole Basin

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Accurate estimates of geothermal heat flow (GHF) are critical for predicting basal melting and identifying stable sites for ancient ice, yet GHF remains one of the least constrained boundary conditions for the Antarctic Ice Sheet. We evaluate nine published Antarctic GHF models against radar‐derived specularity content in the South Pole Basin (
M. Kerr, D. A. Young, S. Yan, C. Pierce
wiley   +1 more source

Ostracods palaeobiodiversity at the Middle - Late Permian boundary

, 2016
Les ostracodes, microcrustacés (Arthropoda), sont relativement abondants dans les archives paléontologiques. Sensibles aux variations paléoenvironnementales, la composition des assemblages et leur diversité sont d’excellents marqueurs des changements qui affectent le benthos marin néritique. Leur diversité est connue pour être fortement affectée par la
openaire   +1 more source

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

The Anatomical Record, Volume 309, Issue 3, Page 550-602, March 2026.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman, Rodrigo Tinoco Figueroa, Robert R. Higgins, Stephanie E. Pierce, Michael I. Coates, Emily M. Troyer, Vincent Fernandez, Kathleen Dollman, Jing Lu, Min Zhu, Matt Friedman, Sam Giles   +11 more
wiley   +1 more source

Characteristics and research progress of Middle-Upper Permian marine shale reservoirs in middle Yangtze region

Youqicang pingjia yu kaifa
The Middle-Upper Permian marine shale formations in the middle Yangtze region are an important replacement field for shale gas exploration and development in China, with great resource potential. However, their reservoir development is complex.
KONG WEILIANG, LIU WEN, CHEN LEI, YU ZHENXIANG, QU TIANQUAN, ZHANG QIN, WU SHUAICAI, XIONG MIN, CAI GUANGYIN, GAO WANLI, QIU ZHEN   +10 more
doaj  

Predicting oxygen thresholds of marine taxa to improve ecological forecasts

Ecography, Volume 2026, Issue 3, March 2026.
Species' ranges are shifting in response to increasing temperature and decreasing oxygen in coastal oceans. Predicting these shifts is limited by information on physiological oxygen thresholds and how they depend on temperature. Here we collate laboratory‐derived measurements of a common oxygen threshold, pcrit, for 148 animal species that span six ...
Timothy E. Essington, James T. Thorson, Curtis Deutsch   +2 more
wiley   +1 more source