Results 41 to 50 of about 1,538 (222)

Dynamic background on formation, evolution, and later reformation of the Late Paleozoic–Early Mesozoic Basin in Songliao and its significance for hydrocarbon exploration

open access: yesFrontiers in Earth Science, 2023
Located on the Songnen block of the Northeast Asia block group, the Songliao Basin is sandwiched by three major plates in Siberia, North China, and the Pacific Ocean.
Lijun Song   +5 more
doaj   +1 more source

LA-ICP-MS U–Pb ages of detrital zircons from Middle Jurassic sedimentary rocks in southwestern Fujian: Sedimentary provenance and its geological significance

open access: yesOpen Geosciences, 2020
In order to determine the tectonic regime change of the early Mesozoic in the South China Block, this study analyzed sedimentary rocks in the Middle Jurassic of southwestern Fujian by modal analysis of sandstones, elemental geochemical analysis of ...
Zhongjie Xu   +4 more
doaj   +1 more source

Image Recognition–Based Identification of Multifractal Features of Faults

open access: yesFrontiers in Earth Science, 2022
Geologists have made several advances in applying multifractal theory in geology; however, some questions such as a large statistical workload and low efficiency remain unanswered.
Xiuquan Hu   +7 more
doaj   +1 more source

Comment [on "Origin of the Chichibu Sea, Japan: Middle Paleozoic to Early Mesozoic plate construction in the northern margin of the Gondwana continent" by S. Otoh, S. Yamakita, and S. Yanai] [PDF]

open access: yes, 1992
International audienceComment [on "Origin of the Chichibu Sea, Japan: Middle Paleozoic to Early Mesozoic plate construction in the northern margin of the Gondwana continent" by S. Otoh, S.
Caridroit, Martial   +2 more
core   +3 more sources

Precipitation mechanism of anhydrite cement in lacustrine tight sandstone: Implications for fluid activity, mass transfer and pore origin of open diagenetic system in tight sandstone

open access: yesThe Depositional Record, Volume 12, Issue 1, February 2026.
This paper discusses a new model concerning the precipitation mechanismand significance of anhydrite cement in tight sandstone. Anhydrite cement ismainly formed by the dissolution and reprecipitation of early‐diageneticcalcite cements, feldspars and volcanic rock fragments at the mesodiageneticstage.
Long Luo   +10 more
wiley   +1 more source

The Indosinian collision–extension event between the South China Block and the Palaeo-Pacific plate: Evidence from Indosinian alkaline granitic rocks in Dashuang, eastern Zhejiang, South China

open access: yesLithos, 2013
AbstractThis study reports on the first comprehensive analysis of the geology, petrology and origin of the Dashuang pluton in Jinhua, eastern Zhejiang, South China, which is predominantly composed of quartz monzonite and subordinate quartz syenite that includes variable amounts of aegirine–augite.
Mao, Jianren   +6 more
openaire   +1 more source

Structural preservation conditions analysis of oil and gas in complex structural area: A case study of structural analysis in the Well Wanjingdi-1, Anhui, China

open access: yesDizhi lixue xuebao, 2021
The multi-stage tectonism of compression and extension occurred in the southern part of the Lower Yangtze region in the Mesozoic, which is one of the important factors restricting the breakthrough of oil and gas exploration in this area.
TAN Yuanlong   +7 more
doaj   +1 more source

Geochemitry of the Xiong’er volcanic rocks: implications for the Paleo-Mesoproterozoic accretion of the North China Craton [PDF]

open access: yes, 2009
This journal supplement has title: Awards Ceremony Speeches and Abstracts of the 19th Annual V.M. Goldschmidt ConferenceThe Xiong.er volcanic belt along the southern margin of the North China Craton is dominated by basaltic andesite and andesite with ...
He, Y, Sun, M, Zhao, G
core   +1 more source

Iron–Phosphorus–Carbon Coupled Cycling in Lacustrine System of Ordos Basin During the Middle Triassic

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Widespread organic‐rich shales are associated with perturbations in productivity or preservation conditions; however, the major controlling factors, especially the phosphorus (P) and iron (Fe) interactions and their impacts on organic carbon burial in the paleolake ecosystem remain poorly understood.
Bo Wang   +7 more
wiley   +1 more source

Controlling effect of palaeo-tectonic stress field on gas occurrence [PDF]

open access: yesArchives of Civil Engineering
The paleo-tectonic stress fieldwas hereby inverted by using the stereographic projection method through field and underground observations of conjugate shear joints.
Weidong Gong   +6 more
doaj   +1 more source

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