Results 21 to 30 of about 3,780 (205)

Metamorphic P–T Evolution and In Situ Biotite Rb–Sr Geochronology of Garnet–Staurolite Schist From the Ramba Gneiss Dome in the Northern Himalaya

Frontiers in Earth Science, 2022
The North Himalayan gneiss domes provide a window for looking into the deeper crust and record abundant clues of continent collisional orogenesis. This study carried out detailed petrology, in situ LA–ICP–MS biotite Rb–Sr dating, and phase equilibrium ...
Long-Long Gou, Xiao-Ping Long, Hao-Yu Yan, Tian-Chu Shu, Jing-Yu Wang, Xiao-Fei Xu, Feng Zhou, Zhi-Bo Tian   +7 more
doaj   +1 more source

Neoproterozoic magmatic evolution of the southern Ouaddaï Massif (Chad)

BSGF - Earth Sciences Bulletin, 2020
This paper presents new petrological, geochemical, isotopic (Nd) and geochronological data on magmatic rocks from the poorly known southern Ouaddaï massif, located at the southern edge of the so-called Saharan metacraton. This area is made of greenschist
Djerossem Félix, Berger Julien, Vanderhaeghe Olivier, Isseini Moussa, Ganne Jérôme, Zeh Armin   +5 more
doaj   +1 more source

Tirekhtyakh, Arga-Ynnakh-Khai and Kester intrusive complexes based on the materials of GDP-200 on the territory of sheets Q-53-IX, X

Руды и металлы, 2022
The structural position, petrographic composition, petro- and geochemical features of amphibole-biotite, biotite and amblygonite-lepidolite granitoid of the study area are characterized.
Larisa G. Vdovina
doaj   +1 more source

Petrography and geochemical study of Nezam-Abad area, Southwest of Shazand, Arak

Journal of Economic Geology, 2010
Nezam-Abad area is located in southwest of Shazand (Arak) which is a part of Sanandaj-Sirjan zone. Major intrusive rocks of Nezam-Abad are quartz diorite and minor amount of granodiorite.
Robabeh Jafari, Moussa Noghreyan, Mohammad Ali Mackizadeh, Javad Ghanei Ardekanei   +3 more
doaj   +1 more source

Petrology, geochemistry, and geochronology of the leucogranites in southernmost Finland [PDF]

Bulletin of the Geological Society of Finland
In the southernmost part of the Svecofennian province in Finland, leucogranites and migmatites stemming from both igneous and sedimentary protoliths reflect the complex magmatic history of the Svecofennian orogeny between 1.89 and 1.82 Ga.
Anna Saukko, Kaisa Nikkilä, Olav Eklund, Sören Fröjdö, Markku Väisänen   +4 more
doaj   +1 more source

Surface wave imaging using deep reflection seismic data: a study on the Cuonadong dome

Earth, Planets and Space, 2022
As interference waves in deep reflection data processing, surface waves are often suppressed as noise, but surface waves carry considerable underground media information, including structural information and the physical properties of rocks.
Guangwen Wang, Zhanwu Lu, Wenhui Li, Shuai Xue, Haiyan Wang, Yongzhi Cheng, Si Chen, Wei Cai   +7 more
doaj   +1 more source

Gamma radioactivity and Environmental radiation risks of Granitoids in Central and Western Gilgit-Baltistan, Himalayas, North Pakistan

Results in Physics, 2022
The study analyzed the gamma radioactivity levels due to radionuclides (226Ra, 232Th, and 40K) by the Gamma-Ray spectrometry method and calculated health hazards in rocks in Central and Western Gilgit-Baltistan, North Pakistan.
Hannan Younis, Farooq Ahmad, Muhammad Anees, Atia Atiq, Nida Shakeel, Muhammad Adil, Khurram Mehboob, Abdulsalam M. Alhawsawi, Rashid Khan, Ahmed M. Khubrani, Aziz Ahmed Qureshi, Muhammad Ajaz   +11 more
doaj   +1 more source

Niemcza diorites and moznodiorites (Sudetes, SW Poland): a record of changing geotectonic setting at ca. 340 Ma [PDF]

, 2013
Granites sensu lato in the Sudetes intruded in several episodes during the Variscan orogeny recording different stages of crust and mantle evolution.
Kierczak, Jakub, Pietranik, Anna, Storey, Craig   +2 more
core   +1 more source

Extensional faulting on Tinos island, Aegean sea, Greece: How many detachments? [PDF]

, 2007
Zircon and apatite fission track (ZFT and AFT) and (U-Th)/He, 40Ar/39Ar hornblende, and U-Pb zircon ages from the granites of Tinos Island in the Aegean Sea, Greece, suggest, together with published ZFT data, that there are three extensional detachments ...
Altherr, Andrew Carter, Avigad, Avigad, Ballard, Barbarand, Black, Boven, Brichau, Brichau, Bröcker, Bröcker, Clauer, Coulson, Dahl, Daniel Stockli, Donelick, Dürr, Esser, Farley, Faure, Forster, Foster, Fytikas, Galbraith, Gessner, Godfriaux, Green, Hejl, Hourigan, House, Hurford, Hurford, John, Kelley, Ketcham, Ketcham, Kumerics, Lee, Lister, Maluski, Maurice Brunel, Mehl, Melidonis, Miller, Patriat, Patrick Monié, Patzak, Pearce, Rahn, Regenauer-Lieb, Reiners, Ring, Ring, Ring, Ring, Ring, Ring, Ring, Ring, Robert Bolhar, Robertson, Samson, Schmädicke, Shaked, Stern, Stockli, Stockli, Stéphanie Brichau, Stöckhert, Tagami, Thomson, Tomaschek, Uwe Ring, Villa, Watson, Weidmann, Wijbrans, York, Zeffren   +79 more
core   +3 more sources

Exhumation history of the Higher Himalayan Crystalline along Dhauliganga-Goriganga river valleys, NW India: new constraints from fission track analysis [PDF]

, 2009
New apatite and zircon fission track data collected from two transects along the Dhauliganga and Goriganga rivers in the NW Himalaya document exhumation of the Higher Himalayan Crystalline units. Despite sharing the same structural configuration and rock
A. Carter, Ahmad, Beaumont, Blythe, Bojar, Bollinger, Bookhagen, Bouchez, Brandon, Braun, Burbank, Burchfiel, Burg, Davidson, Dezes, Ehlers, Foster, Galbraith, Gansser, Garzanti, Grujic, Gururajan, Heim, Herren, Hodges, Hodges, Hubbard, Huntington, Hurford, Hurford, Jain, Jain, Jain, Jain, Lal, Leech, Mancktelow, Metcalfe, Molnar, Patel, Patriat, Paul, R. C. Patel, Rao, Ray, Rowley, Roy, Schlup, Searle, Searle, Seitz, Singh, Sorkhabi, Srivastava, Stern, Stüwe, Thakur, Thiede, Thiede, Thiede, Valdiya, Vannay, Whipp, Whipp, Whipple, Whipple, Yin   +66 more
core   +1 more source