Results 71 to 80 of about 294,419 (331)

SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand [PDF]

, 2006
Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Aronson JL, Bignall G, Bryan WB, Challis GA, Corfu F, Devereux I, Ewart A, Graham IJ, Hanchar JM, Kroenke LW, Mossman DJ, Mutch AR, Mutch AR, Rombouts M, Wadsworth CA, Williams JG   +15 more
core   +2 more sources

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

Deep Underground Science and Engineering, EarlyView.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian, Jiabao Wang, Changsheng Wang, Shijie Sun, Lijun Han, Qingbin Meng, Sunhao Zhang   +6 more
wiley   +1 more source

Ultrafast core-to-core luminescence in BaF2 - LaF3 single crystals

Scientific Reports
This study investigates the mechanisms underlying the ultrafast cross-luminescence observed in BaF2 crystals doped with LaF3. We identified an ultrafast luminescent component with a decay time of approximately 150 ps, which emerges under excitation ...
Roman Shendrik, Evgeny Radzhabov, Alexandra Myasnikova, Viktorija Pankratova, Anatolijs Šarakovskis, Alexander Nepomnyashchikh, Alexander Bogdanov, Veronika Gavrilenko, Ekaterina Kaneva, Dmitry Sofich, Tatiana Garmysheva, Vladimir Pankratov   +11 more
doaj   +1 more source

Tracing nitrate sources with dual isotopes and long term monitoring of nitrogen species in the Yellow River, China

Scientific Reports, 2017
A heavy load of nitrogenous compounds reflects nutrient loss and influences water quality in large rivers. Nitrogenous concentrations and dual isotopes of nitrate were measured to ascertain the spatial and temporal distributions of nitrate transformation
Fu-Jun Yue, Si-Liang Li, Cong-Qiang Liu, Zhi-Qi Zhao, Hu Ding   +4 more
doaj   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

Deep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang, Zhongkai Li, Jianguo Wang, Zhiqiang Li   +3 more
wiley   +1 more source

Genetic mechanism of bicyclic sesquiterpanes in Upper Triassic source rock of Yinan 2 well from the Kuqa Depression of Tarim Basin, China

Scientific Reports
Bicyclic sesquiterpanes are widely distributed in terrigenous sedimentary organic matter and are serve as valuable biomarker in the field of organic geochemistry.
Yiman Zhang, Haizu Zhang, Hanyu Deng, Liangliang Wu, Bin Cheng, Yunpeng Wang, Zewen Liao   +6 more
doaj   +1 more source

Geochemistry of As-, F- and B-bearing waters in and around San Antonio de los Cobres, Argentina, and implications for drinking and irrigation water quality [PDF]

, 2011
Spring, stream and tap waters from in and around San Antonio de los Cobres, Salta, Argentina, were sampled to characterize their geochemical signatures, and to determine whether they pose a threat to human health and crops.
Aiuppa, Ballantyne, Bennett, Berger, Blasco, Brookins, Carton, Concha, Concha, Concha, De la Fuente, De Sastre, De Vitre, Deer, Ellis, Fiorentino, Gupta, Hedenquist, Hem, Hudson-Edwards, Hudson-Edwards, Jain, Jane Archer, Karen A. Hudson-Edwards, Katsoyiannis, Langner, Leyshon, Lloyd, Maas, Mayayo, Meng, MRA-UGAN Minería de la República Argentina-Unidad de Gestión Ambiental Nacional, Mroczek, Munshower, Nordstrom, Parks, Pesce, Reutter, Rowe, Sainato, Smedley, USEPA, USEPA United States Environmental Protection Agency, Vahter, Vahter, Water Quality Guidelines, Webster, Webster, Welch, WHO, WHO, WHO, WHO, WHO World Health Organization, Wilkie, Yokoyama   +55 more
core   +1 more source

A perspective review of applications of the computed tomography (CT) scan imaging technique for microscopic reservoir rock characterization

Deep Underground Science and Engineering, EarlyView.
In this review, the application of micro‐CT and medical‐CT scanning in the oil and gas industry has been thoroughly discussed. Recent improvements in DRP and modern imaging techniques in the oil and gas industry have been modeled using both experimental and simulation work.
Achinta Bera, Bharadwaj Shukla, Dhruvikkumar Jogani   +2 more
wiley   +1 more source

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

Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]

, 2014
Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum, Bernhard Dold, Edi Mendes Guimaraes, Elisa Pannunzio Miner, Jesica Murray, Nw Argentina   +5 more
core   +3 more sources