Results 81 to 90 of about 72,467 (243)

Paleozoic and Mesozoic hydrocarbon foci of generation and assessment of their role in formation oil deposits of the Pre-Jurassic complex of Western Siberia

Georesursy
The following problem is solved by the present research: the probable sources of Paleozoic hydrocarbon deposits are determined on the basis of modeling the hydrocarbon foci of generation Paleozoic-Mesozoic oil source formations (for example, the ...
V. I. Isaev, M. F. Galieva, G. Lobova, S. G. Kuzmenkov, V. I. Starostenko, A. N. Fomin   +5 more
doaj   +1 more source

Indo-Brazilian Late Palaeozoic wildfires: an overview on macroscopic charcoal

Geologia USP. Série Científica, 2016
Sedimentary charcoal is widely accepted as a direct indicator for the occurrence of paleo-wildfires and, in Upper Paleozoic sediments of Euramerica and Cathaysia, reports on such remains are relatively common and (regionally and stratigraphically) more ...
André Jasper, Dieter Uhl, Rajni Tewari, Margot Guerra-Sommer, Rafael Spiekermann, Joseline Manfroi, Isa Carla Osterkamp, José Rafael Wanderley Benício, Mary Elizabeth Cerruti Bernardes-de-Oliveira, Etiene Fabbrin Pires, Átila Augusto Stock da Rosa   +10 more
doaj   +1 more source

An in situ shelly fauna from the lower Paleozoic Zapla diamictite of northwestern Argentina: implications for the age of glacial events across Gondwana [PDF]

, 2015
A shelly fauna from the upper part of the Zapla glacial diamictite includes thelingulate brachiopod Orbiculoidea radiata Troedsson, the rhynchonelliforms Dalmanella cf. testudinaria (Dalman) and Paromalomena sp., the bivalve Modiolopsis?
Benedetto, Juan Luis Arnaldo, de la Puente, Graciela Susana, Halpern, Karen, Monaldi, Cesar Ruben   +3 more
core   +2 more sources

Seismic Stratigraphy of the Peruvian Forearc Drifts from 3° to 7°S: Identification and Influence of Lower Layers of the Humboldt Current System

Paleoceanography and Paleoclimatology, Volume 41, Issue 4, April 2026.
Abstract The seafloor morphology and subsurface geometry of a late Neogene contourite drift located along the Peru margin is documented for the first time using multibeam bathymetry, two‐dimensional and three‐dimensional seismic data. Along the margin several submarine canyons incise the shelf and slope.
Gérôme Calvès, Stéphane Brusset, Ysabel Calderon, Patrice Baby, Peter D. Clift   +4 more
wiley   +1 more source

Distinct Dominant Intraseasonal Oscillation Modes Modulate South China's Persistent Extreme Precipitation in Rainy Season

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract This study investigates mechanisms by which distinct intraseasonal oscillation modes drive regional persistent extreme precipitation events over South China during the rainy season. Based on periodic characteristics of 54 such events, two dominant modes are identified: 12–20‐day (type‐1) and 25–50‐day (type‐2) oscillations. Although comparable
Wei Lu, Yao Ha, Yimin Zhu, Haixia Dai, Yijia Hu, Xiangrong Yang, Yudi Liu, Zhong Zhong   +7 more
wiley   +1 more source

Textural and Lithologic Differences of Cretaceous, Tertiary, and Quaternary Gravels of South Arkansas [PDF]

, 1987
Stream gravels have been derived from the Ouachita Mountains since at least Cretaceous times. Past studies have assigned ages to gravel deposits in the basins of the Saline and Little Missouri Rivers on the basis of altitude above local floodplains. This
Wood, Lesli
core   +2 more sources

Tendencies of Soil Microbial NO Emissions During HI‐SCALE as Predicted by a Nitrification/Denitrification Scheme

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Many atmospheric chemical processes, including the formation of secondary organic aerosol (SOA), are strongly modulated by the reactions of NO and NO2NOx ${\text{NO}}_{2}\ \left({\text{NO}}_{x}\right)$. Though NOx ${\text{NO}}_{x}$ is controlled by anthropogenic emissions near urban areas, in rural areas soil microbes can be a significant ...
B. Gaudet, J. Fast, Q. Rasool, M. Shrivastava, S.‐L. Tai, R. Zaveri, J. Zhang   +6 more
wiley   +1 more source

Geochemical characteristics, origin and main controlling factors of helium gas accumulation of helium-bearing natural gas in Sulige Gas Field, Ordos Basin, China

Journal of Natural Gas Geoscience
The Ordos Basin is the largest natural gas producing region in China. Recent discoveries of two helium-rich natural gas fields (Dongsheng and Qingyang) shows promising helium resource potential.
Liyong Fan, Jianshe Wei, Aiping Hu, Yuhong Li, Linze Xie, Tao Jiang, Yuxuan Zhang, Shangwei Ma   +7 more
doaj   +1 more source

Distribution and genesis of large-scale Upper Paleozoic lithologic gas reservoirs on Yi-Shaan Slope

Petroleum Exploration and Development, 2008
Lithologic reservoirs are widely distributed at Upper Paleozoic of Yi-Shaan Slope in Ordos Basin. With over 40 years of exploration, six large gas fields were discovered, including Sulige, Wushenqi, Yulin, Daniudi, Zizhou, and Mizhi, with total proved ...
Jin-hua FU, Xin-shan WEI, Jun-feng REN
doaj   +1 more source

Using Network Observations to Constrain CO and CO2 Emissions From an Oil Refinery in the San Francisco Bay Area

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Point sources are often major contributors of greenhouse gas and air pollutant emissions in urban areas. Dense air monitoring networks provide a unique avenue for studying point source emissions over long time periods. Here, we use the Berkeley Environmental Air‐quality and CO2 Network (BEACO2N) to study CO2 and air pollutant emissions from an
Milan Y. Patel, Naomi G. Asimow, Anna R. Winter, Yishu Zhu, Ronald C. Cohen   +4 more
wiley   +1 more source