Results 51 to 60 of about 5,331 (209)

Fault systems in multiply deformed regions of Eurasia

Russian Journal of Earth Sciences, 2023
We have studied the orogenic fragile deformation of the upper Earth’s crust of several areas of the Eurasian continent, where deformations have occurred many times – in the Tian Shan and Altai-Sayan regions of the Central Asian Paleozoic Fold Belt and in
Burtman V, Kolodyazhnyi S
doaj   +1 more source

Geophysical update of the diameter of the Zhamanshin impact structure, Kazakhstan

Meteoritics &Planetary Science, EarlyView.
Abstract The rim of the 0.9‐Ma‐old Zhamanshin impact crater in Kazakhstan is considered to be almost completely exposed via a series of hills surrounding a central flat area, indicating an apparent diameter of 14 km. This would make Zhamanshin the second largest impact crater of the Quaternary period. However, the overall geometry of these hills is not
Yoann Quesnel, Dilyara M. Kuzina, Jérôme Gattacceca, Minoru Uehara, Ayrat G. Kharisov, Dmitry D. Badyukov, Pierre Rochette   +6 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

Reconnaissance study of watershed and cave sediment sources discharging from a karst spring, Iowa

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Springs discharging from karst landscapes provide sustainable flows to natural ecosystems and support productive fish hatcheries but sediment discharging from springs threatens the long‐term sustainability of hatcheries. In this study, we conducted a reconnaissance study to evaluate watershed and cave sediment sources discharging to Siewers ...
Keith E. Schilling, Joseph Honings, Thomas Doyle, Calvin Wolter, David Peate   +4 more
wiley   +1 more source

Beach Gold and Heavy Mineral Concentrates on Tiwai Spit Gravel Strand Plain, Southland, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
The Holocene Tiwai Spit on Foveaux Strait is a 12 km by 2 km gravel‐dominated strand plain, ∼10 m above present sea level. Gravel clasts are dominated by well‐rounded quartz cobbles, pebbles and granules derived from Otago Schist 200 km to the north in evolving river drainage systems during late Cenozoic.
Marshall Palmer, Dave Craw
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