Results 61 to 70 of about 28,608 (299)

Petrogenesis and implications of the Dupangling compound granite in southern Hunan Province, China: Constraints from mineralogical chemistry, zircon U-Pb age, geochemistry and Nd-Hf isotope

Dizhi lixue xuebao, 2022
In this paper, zircon SHRIMP U-Pb geochronology, petrology, mineral chemistry, petrogeochemistry, Sm-Nd and Lu-Hf isotopes were studied for the eastern part of the Dupangling pluton, which is located at the western section of Nanling at the junction of ...
CHEN Di, LUO Peng, ZENG Zhifang, LIANG Enyun, PENG Yunyi, JIA Pengyuan, XIONG Miao, ZOU Guangjun   +7 more
doaj   +1 more source

Experimental Simulation Investigation on Mechanism and Criterion of Impact‐Induced Rockburst in Gaoloushan Deep Tunnel

Energy Science &Engineering, EarlyView.
ABSTRACT During the excavation of a deep‐buried tunnel by the drilling and blasting method, the dynamic stress of blasting may cause the disorderly release of high energy in the rock mass during the blasting process of deep high‐energy rock. Blasting vibration is one of the main factors inducing dynamic disasters (such as rockbursts) in the surrounding
Chao Ren, Xiaoming Sun, Manchao He, DongQiao liu, JinKun Yang, Kunbo Zhang   +5 more
wiley   +1 more source

Geochemistry and tectonomagmatic setting of protolite rocks of meta-volcanics in the Halab metamorphic complex (SW Dandy, Zanjan Province)

Journal of Economic Geology, 2019
Introduction Three fundamental goals will be followed in the study of metamorphic terrains including: 1- study of fabric in metamorphic rocks in order to recognize the relationship between metamorphism and deformation, 2- the identification of ...
Rahimeh Nafisi, Hossein Kouhestani, Mir Ali Asghar Mokhtari, Martiya Sadeghi   +3 more
doaj   +1 more source

Variations in the P‐T‐t of Deformation in a Crustal‐Scale Shear Zone in Metagranite

Geochemistry, Geophysics, Geosystems, 2020
Deformation in crustal‐scale shear zones occurs over a range of pressure‐temperature‐time (P‐T‐t) conditions, both because they may be vertically extensive structures that simultaneously affect material from the lower crust to the surface, and because ...
T. K. Cawood, J. P. Platt
doaj   +1 more source

Integration of natural data within a numerical model of ablative subduction: A possible interpretation for the Alpine dynamics of the Austroalpine crust

, 2012
A numerical modelling approach is used to validate the physical and ge- ological reliability of the ablative subduction mechanism during Alpine con- vergence in order to interpret the tectonic and metamorphic evolution of an inner portion of the Alpine ...
Andreoli, Ayrton, Babist, Bachmann, Beltrando, Best, Blanco-Quintero, Bousquet, Bousquet, Brun, Castelli, Castelli, Cenki-Tok, Chemenda, Chopra, Christensen, Clift, Cloos, Cloos, Cloos, Compagnoni, Cortiana, Cosca, Cruciani, Currie, Dal Piaz, Dal Piaz, Dal Piaz, Dal Piaz, Dallmeyer, Dallmeyer, Delleani, Desmons, Dubois, Duchêne, Engi, Ernst, Ernst, Faccenda, Faryad, Flueh, Frey, Froitzheim, Gaidies, Gaidies, Gardien, Gazzola, Gerya, Gerya, Gerya, Giorgetti, Gosso, Gosso, Gregurek, Groppo, Guillot, Guntli, Habler, Habler, Haenel, Handy, Handy, Handy, Hellwig, Hoinkes, Hopfer, Hunziker, Hunziker, Hy, Hyndeman, Hyndman, Inger, Janak, Karato, Kienast, Kienast, Kirby, Koller, Konzett, Kurz, Lallemand, Lardeaux, Lardeaux, Lardeaux, Linner, Mandl, Marotta, Marotta, Meda, Miller, Neubauer, Oberhänsli, Oberhänsli, Pennacchioni, Pennacchioni, Platt, Pognante, Pognante, Pognante, Poli, Polino, Putis, Putis, Ranalli, Rebay, Rebay, Reinsch, Ring, Roda, Roda, Roda, Rolfo, Rolland, Rondenay, Rosenbaum, Rubatto, Rubatto, Rubatto, Ruffet, Scambelluri, Schmid, Schneider, Schreiber, Schuster, Schuster, Schuster, Schwartz, Schwartz, Shreve, Smart, Solva, Solva, Spalla, Spalla, Spalla, Spalla, Spalla, Stöckhert, Stüwe, Stüwe, Tenczer, Tenczer, Thompson, Thompson, Thöni, Thöni, Thöni, Tomaschek, Torok, Torok, Tropper, Tropper, Tropper, Turcotte, Vuichard, Wakabayashi, Wakabayashi, Warren, Wiesinger, Williams, Yamato, Zanchetta, Zanoni, Zanoni, Zanoni, Zucali, Zucali, Zucali   +167 more
core   +1 more source

Determination of Groundwater Vulnerability for Protection of the Drinking Water Basins: A Case Study From Türkiye, Kesikköprü Dam Lake Basin

Global Challenges, EarlyView.
Groundwater vulnerability is evaluated in a critical drinking water basin under the threats of climate change and population growth. Using GIS‐based DRASTIC modeling and field validation, high‐risk zones are identified. The results offer strategic insights for protecting Ankara's groundwater resources against escalating environmental and anthropogenic ...
Olcay Gülçiçek Uysal, Kağan Cebe, Mert Cüylan, Olgu Yurttaş   +3 more
wiley   +1 more source

Evolving Subduction Zone Thermal Structure Drives Extensive Forearc Mantle Wedge Hydration

AGU Advances
Hydration of the subduction zone forearc mantle wedge influences the downdip distribution of seismicity, the availability of fluids for arc magmatism, and Earth's long term water cycle.
G. S. Epstein, C. B. Condit, R. K. Stoner, A. F. Holt, V. E. Guevara   +4 more
doaj   +1 more source

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) [PDF]

, 2018
The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by the occurrence of the unexpected 2008 Mw 7.9 Wenchuan and 2013 Mw 6.6 Lushan earthquakes in the central and southern parts of the ...
A. Robert, Airaghi, Airaghi, Airaghi, Ansberque, Arne, Beyssac, Billerot, Burchfiel, C. J. Warren, Chen, Cook, D. Deldicque, Deng, Densmore, Deschamps, Dirks, Dubacq, Godard, Guo, Harrison, Harrowfield, Huang, Huang, Hubbard, Hubbard, J. de Sigoyer, Jia, Jiang, Kapp, Kapp, Kirby, L. Airaghi, Lanari, Lanari, Li, Li, Li, Li, Liao, Lichun, Liu, Massonne, Meng, Meng, Michele, Passchier, Robert, Robert, Robert, Roger, Roger, Roger, S. Guillot, SBGMR (Sichuan Bureau of Geology and Mineral Resources), Sigoyer, Sigoyer, Stipp, Tan, Tan, Tian, Vidal, Vidal, Wang, Wang, Wang, Weller, Whitney, Worley, Xu, Xu, Xue, Yan, Zhang, Zhang, Zhang, Zhang, Zheng, Zheng, Zhou, Zhou   +80 more
core   +2 more sources

Early Cretaceous–Late Miocene Basin–Mountains Pattern in the Northeastern Margin of the Tibetan Plateau, NW China: Evidence From Detrital Zircon Chronology in the Lanzhou Basin

Geological Journal, EarlyView.
Using DZmix and DZstats models, we quantified the contributions of potential sources of the Lanzhou basin. Our findings indicate that the Cenozoic cooling and denudation signals primarily originated from Qilian and West Qinling, which were the main sediment sources.
Hang Liu, Hu–jun Gong, Fen–hong Luo, Rui Zhang   +3 more
wiley   +1 more source

Zircon U-Pb dating of Mesozoic volcanic and tectonic events in northwest Palmer Land and southwest Graham Land, Antarctica [PDF]

, 2009
New whole rock Rb-Sr and zircon U-Pb geochronological data and Sm-Nd isotopic data are presented from the central magmatic arc domain of the Antarctic Peninsula in the area of northwest Palmer Land and southwest Graham Land, Rb-Sr isochrons indicate an ...
Flowerdew, Michael, Leat, Philip, Millar, Ian, Riley, Teal, Scarrow, J.H., Whitehouse, M.J.   +5 more
core   +1 more source