Results 51 to 60 of about 5,273 (201)

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, EarlyView.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source

Prospective prediction and exploration situation of marine Mesozoic-Paleozoic oil and gas in the South Yellow Sea

China Geology, 2019
: The South Yellow Sea Basin is a large sedimentary basin superimposed by the Mesozoic-Paleozoic marine sedimentary basin and the Mesozoic-Cenozoic terrestrial sedimentary basin, where no oil and gas fields have been discovered after exploration for 58 ...
Jian-wen Chen, Ming Xu, Bao-hua Lei, Jie Liang, Yin-guo Zhang, Shu-yu Wu, Jian Shi, Yong Yuan, Jian-qiang Wang, Yu-xi Zhang, Gang Li, Wen-juan Wang   +11 more
doaj   +1 more source

Plagioclasites from chromite-bearing ultramafic rocks of the Rai-Iz massif

Литосфера, 2016
The corundum-bearing and without-corundum plagioclasites from chromite-bearing ultramafic rocks of Rai-Iz massif were studied. Chemical composition of the rock-forming minerals and rock geochemical characteristics was determined.
N. V. Vakhrusheva, K. S. Ivanov, A. E. Stepanov, S. P. Shokalsky, A. N. Azanov, V. V. Hiller, P. B. Shiryayev   +6 more
doaj  

Genetic types and sources of Lower Paleozoic natural gas in the Daniudi gas field, Ordos Basin, China

Energy Exploration & Exploitation, 2017
The molecular composition, stable carbon and hydrogen isotopes, and light hydrocarbons of the Lower Paleozoic natural gas in the Daniudi gas field in the Ordos Basin were investigated to study the geochemical characteristics.
Xiaoqi Wu, Jianhui Zhu, Chunhua Ni, Kuang Li, Yanqing Wang, Ye Hu, Jianhong Lv, Yingli Wu, Qi Qiu   +8 more
doaj   +1 more source

ABOUT LITHOMINERALOGICAL COMPOSITION OF ANCIENT SEDIMENTARY DIAMONDIFEROUS ROCKS

Известия высших учебных заведений: Геология и разведка, 2018
Litho-mineralogical and structural-formation generation features of Upper Devonian-Carboniferous crusts of weathering on terrigenous-carbonate rocks, kimberlites and deposits enriched by products of their redeposition, have been studied, that allowed ...
N. N. Zinchuk
doaj   +1 more source

Source of the Upper Paleozoic natural gas in the Dingbei area, Ordos Basin, China

Journal of Natural Gas Geoscience, 2019
The Dingbei area is an important exploration area in the Ordos Basin for SINOPEC, and natural gas exploration in the Upper Paleozoic strata in the area achieved a great breakthrough in recent years.
Xiaoqi Wu, Chunhua Ni, Yingbin Chen, Jianhui Zhu, Kuang Li, Huasheng Zeng   +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

Paleomagnetic Constraints on the Separation of the Olongbuluke Block From the North China Block During the Late Cambrian–Middle Ordovician and Its Tectonic Significance

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The collisional evolution of the micro‐blocks in the northeastern Tibetan Plateau is relatively well constrained. However, the reason why a fragment of the North China Block, the Olongbuluke Block, became separated from North China by the Central Qilian Block (a fragment of the South China Block) remains unclear.
Teng Wang, Yanan Zhou, Ruiyang Chai, Xin Cheng, Hanning Wu   +4 more
wiley   +1 more source

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

Quantifying the Role of Karst Groundwater on Mountain River Discharge

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract In snow‐fed, mountainous karst regions, aquifers sustain and are connected to streamflow via springs and distributed groundwater exchanges (DGE) including inflows (DGI) and losses (DGL). Despite their significance, there is limited understanding of the complex flow paths linking aquifers and streams, particularly regarding flow path source and
Devon Hill, Bethany T. Neilson, Hyrum Tennant, Dennis L. Newell, Nathaniel Ashmead, Seohye Choi, James P. McNamara, Mark Schmitz, Lawrence E. Spangler, Tianfang Xu   +9 more
wiley   +1 more source