Results 31 to 40 of about 623,919 (404)

Petrological and Geochemical Constraints on the Origin of Early Cretaceous Volcanic Rocks in the Central‐East Asia: Implications for Crustal Growth and Evolution

Geochemistry, Geophysics, Geosystems, 2018
New petrological and geochemical data for Early Cretaceous volcanic rocks in the North China Craton (NCC) combined with published data of cotemporaneous volcanic rocks in the NCC and eastern Central Asian Orogenic Belt (ECAOB) are used to understand ...
Sheng‐Ping Qian, Zhong‐Yuan Ren, Le Zhang, Lei Zhang, Ya‐Dong Wu, Sheng‐Wang Mei, Xiao‐Bo Xu, Qing‐Chen Luo   +7 more
doaj   +1 more source

A Comparative Study on Microscopic Characteristics of Volcanic Reservoirs in the Carboniferous Kalagang and Haerjiawu Formations in the Santanghu Basin, China

Frontiers in Earth Science, 2021
Self-jetting high-yield oil flow was obtained from Ma 67 and Ma 36 wells drilled in the volcanic reservoirs of the Haerjiawu Formation in the Santanghu Basin, China. This has shifted the prospectors’ attention to the Haerjiawu Formation from the Kalagang
Weiming Wang, Weihao La, Tanguang Fan, Xiongfei Xu, Yingnan Liu, Qixia Lv   +5 more
doaj   +1 more source

El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S): antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas [PDF]

, 2014
Los depósitos continentales y volcánicos de la Formación Rio Damas-Tordillo, Jurásico Superior, representan un período restringido de sedimentación continental dentro del registro mayormente marino de la Cuenca Neuquina.
Calderón, Sergio, Charrier González, Reynaldo, Ducea, Mihai Nicolae, Hoffman, Derek, Mescua, Jose Francisco, Oliveros, Verónica, Rossel, Pablo, Tapia, Felipe   +7 more
core   +2 more sources

Reservoir characteristics, formation mechanisms and petroleum exploration potential of volcanic rocks in China

Petroleum Science, 2015
Characterized by complex lithology and strong heterogeneity, volcanic reservoirs in China developed three reservoir space types: primary pores, secondary pores and fractures.
Z. Mao, R. Zhu, Jing Luo, Jinghong Wang, Z. Du, Ling Su, Shaolin Zhang   +6 more
semanticscholar   +1 more source

Constraints on Early Paleozoic Deep‐Ocean Oxygen Concentrations From the Iron Geochemistry of the Bay of Islands Ophiolite

Geochemistry, Geophysics, Geosystems, 2022
The deep ocean is generally considered to have changed from anoxic in the Precambrian to oxygenated by the Late Paleozoic (∼420–400 Ma) due to changes in atmospheric oxygen concentrations.
Daniel A. Stolper, Xiaofei Pu, Max K. Lloyd, Nikolas I. Christensen, Claire E. Bucholz, Rebecca A. Lange   +5 more
doaj   +1 more source

Geochronology and geochemistry of Eocene-aged volcanic rocks around the Bafra (Samsun, N Turkey) area: Constraints for the interaction of lithospheric mantle and crustal melts [PDF]

, 2016
International audience40Ar-39Ar age, whole-rock chemical and Sr-Nd isotope data are presented for the post-collisional, Eocene (51.3-44.1 Ma)-aged volcanic rocks from the Bafra (Samsun) area in the western part of the Eastern Pontides (N Turkey) aiming ...
Abdioğlu, Emel, Arslan, Mehmet, Ruffet, Gilles, Temizel, Irfan, Yücel, Cem   +4 more
core   +2 more sources

Cooling‐dominated cracking in thermally stressed volcanic rocks

, 2016
Most studies of thermally induced cracking in rocks have focused on the generation of cracks formed during heating and thermal expansion. Both the nature and the mechanism of crack formation during cooling are hypothesized to be different from those ...
John Browning, P. Meredith, Agust Gudmundsson   +2 more
semanticscholar   +1 more source

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

Geological characteristics of early cretaceous volcanic rocks and analysis of metallogenic potential of uranium mineralization in Moganshan basin, northern Zhejiang province, China

Frontiers in Earth Science
The Moganshan Volcanic Basin is located in the northeastern section of the Ganhang volcanic-tectonic-uranium polymetallic metallogenic belt. To explore the uranium mineralization potential of these volcanic rocks, petrographic, elemental geochemical ...
Xiaolong Wang, Xiaolong Wang, Wengao Zhang, Wengao Zhang, Shenghong Cheng, Bo Wang, Yifei Tang, Wei Li   +7 more
doaj   +1 more source

Evaluation of volcanic gas reservoir in Yingcheng formation of Block Shengshen2-1 of Northern Part of Songliao Basin [PDF]

E3S Web of Conferences, 2019
According to the thin sections of volcanic rocks, chemical composition analysis and log interpretation, and well data, it is determined that the volcanic rocks of Yingcheng Formation in Shengshen 2-1 block are mainly intermediate-acid volcanic lava and ...
Zhou Yue, Wu Haibo
doaj   +1 more source