Results 51 to 60 of about 8,056 (240)

Late Mesozoic adakite granites of the southern frame of the eastern flank of the Mongol-Okhotsk orogenic belt: material composition and geodynamic conditions of formation

Геодинамика и тектонофизика, 2020
Granitoids of the Magdagachi complex were studied using new and published petrochemical, geochemical and isotopic (Sm-Nd, Rb-Sr) data. Granitoid samples were taken from the southern frame of the eastern flank of the Mongol-Okhotsk orogenic belt (MOOB ...
I. M. Derbeko, A. V. Chugaev
doaj   +1 more source

Ecological Processes Underpinning Microbial Variability in Archean Granitoids Beneath the Deccan Traps: Evidence From Deep Drilling in Koyna, India. [PDF]

Environ Microbiol Rep
Deep biosphere hosted by Archean granitoid basement of Deccan Traps showed depth‐wise microbial partitioning. Limited dispersion and variable selection control community assembly. Fewer abundant bacterial taxa were ubiquitous, while large numbers of rare taxa remained localized.
Sahu RP, Kazy SK, Mukherjee D, Roy S, Wiersberg T, Sar P.   +5 more
europepmc   +2 more sources

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Petrochemistry of the south Marmara granitoids, northwest Anatolia, Turkey

, 2008
Post-collision magmatic rocks are common in the southern portion of the Marmara region (Kapıdağ, Karabiga, Gönen, Yenice, Çan areas) and also on the small islands (Marmara, Avşa, Paşalimanı) in the Sea of Marmara.
Yılmaz, Y., Karacık, Z., Ece, Ö. Işik, Pearce, Julian A.   +3 more
core   +2 more sources

Physicochemical conditions of the formation of the Larino granite-gneiss dome (South Ural)

Georesursy
The Larino granite-gneiss dome is located on the border of the Aramil-Sukhtelya and Magnitogorsk megazones and is a two-headed anticlinal structure, the nuclear parts of which are composed of granitoids of the Pervomai and Larino massifs, and their ...
V. I. Snachev, A. V. Snachev, V. Yu. Prokofiev   +2 more
doaj   +1 more source

Magnetic properties of geraisites, the first tektite strewn field identified in Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract Geraisites are a newly recognized class of tektite from Brazil. They occur as centimeter‐sized, elongated to subspherical bodies scattered across surface gravel and shallow subsurface layers within a ~90‐km‐long strewn field extending between the municipalities of São João do Paraíso and Curral de Dentro, near the border between the states of ...
Melissa De Andrade Nunes, Ricardo I. F. Trindade, João Pedro Rodriguez Pinto, Alvaro P. Crósta, Gabriel G. Silva, Ludovic Ferrière, Camila R. Sales, Giovanna M. Tosi   +7 more
wiley   +1 more source

Source‐to‐sink sediment transport reversals during glacial sea‐level lowstands sustain soil formation on pericoastal carbonate terrains

Sedimentology, EarlyView.
ABSTRACT Understanding the processes that drive soil formation is crucial for developing sustainable land‐use strategies, as changing land‐use practices and climate change exacerbate soil erosion. The formation of substantial arable soils on carbonate bedrock requires substantial dust accretion as the underlying bedrock lacks siliciclastic material. In
Daniel Palchan, Yael Jacobi Glass, Olga Berlin, Yoav Ben Dor   +3 more
wiley   +1 more source

Granitoides e séries magmáticas: o estudo contextualizado dos granitoides

Pesquisas em Geociências, 2016
A relação que muitas rochas graníticas possuem com magmas menos diferenciados provenientes do manto tem sido subestimada nas últimas décadas, perdendo-se assim uma poderosa ferramenta científica para investigação de ambientes geotectônicos antigos e da própria evolução do sistema manto-crosta. Propõem-se neste trabalho que os magmas graníticos passem a
openaire   +2 more sources

Tectonic setting and petrogenesis of the Çelebi granitoid, (Kırıkkale-Turkey) and comparison with world skarn granitoids

Journal of Geochemical Exploration, 2002
Abstract Many studies have shown systematic correlations between the composition of plutons worldwide and the metal content of associated skarns. This is the first report of similar correlations between the composition of Celebi granitoid and skarns of the Celebi district in Central Anatolia, Turkey.
Kuşçu, İlkay, Gençalio?lu Kuşcu, Gonca, Meinert, Lawrence D., Floyd, Peter A.   +3 more
openaire   +2 more sources