Results 1 to 10 of about 313,354 (211)

General geology, alteration, and iron deposits in the Palaeoproterozoic Misi region, northern Finland [PDF]

Bulletin of the Geological Society of Finland, 2003
The Paleoproterozoic Misi region forms the northeastern part of the Peräpohja Schist Belt in northern Finland. The area comprises mafic volcanic land sedimentary rocks, differentiated gabbros, and late-orogenic granitoids.
T. Niiranen, E. Hanski, P. Eilu
doaj   +1 more source

The Subduction-Related Metavolcanic Rocks of Maroua, Northern Cameroon: New Insights into a Neoproterozoic Continental Arc Along the Northern Margin of the Central African Fold Belt

Geosciences
The metavolcanic rocks around Maroua in the Far North Region of Cameroon are located at the northern margin of the Central African Fold Belt (CAFB) and have not been studied to date.
Pierre Christel Biakan à Nyotok, Merlin Gountié Dedzo, Diddi Hamadjoda Djamilatou, Nils Lenhardt, Moussa Ngarena Klamadji, Periclex Martial Fosso Tchunte, Pierre Kamgang   +6 more
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Provenance of the Late Ediacaran Minas de Corrales Formation, Nico Pérez Terrane, Uruguay: paleogeographic implications

Frontiers in Earth Science
The Nico Pérez Terrane, located in the eastern margin of the Río de la Plata Craton, played a critical role in the assembly of SW Gondwana. The Isla Cristalina de Rivera basement klippe represents the northernmost exposures of the Nico Pérez Terrane in ...
Paulina Abre, Gonzalo Blanco, Dirk Frei
doaj   +1 more source

New U-Pb zircon data for Maarianvaara granite and Tohmajärvi volcanic complex, eastern Finland: geologic implications [PDF]

Bulletin of the Geological Society of Finland
New U-Pb zircon ages reported for samples from the Maarianvaara granite and Tohmajärvi volcanic complex (TVC) corroborate previous estimates of their magmatic emplacement at ca. 1.85 Ga and 2.11 Ga, respectively. The ca.
Asko Kontinen, Jarmo Kohonen, Perttu Mikkola, Matti Kurhila   +3 more
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Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: The Nordre Strømfjord shear zone and the Arfersiorfik quartz diorite in Arfersiorfik, the Nagssugtoqidian orogen, West Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2006
The Nordre Strømfjord shear zone in the fjord Arfersiorfik, central West Greenland, consists of alternating panels of supracrustal rocks and orthogneisses which together form a vertical zone up to 7 km wide with sinistral transcurrent, ductile ...
Stensgaard, Bo Møller, Glassley, William E., Korstgård, John A., Sørensen, Kai   +3 more
doaj  

Gold mobility in subduction zones, the slab perspective

Communications Earth & Environment
Arc environments are locally gold-endowed and it has been long hypothesized that gold mobilization during slab dehydration could affect mantle composition and arc Au-fertility.
Clifford G. C. Patten, Alexandre Peillod, Simon Hector, Barbara I. Kleine-Marshall, Aratz Beranoaguirre, Antonin Bilau, Kirsten Drüppel, Jesse B. Walters, Iain Pitcairn, Uwe Ring, Alasdair Skelton, Jochen Kolb   +11 more
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Geology and geochronology of the Magdalena-Madera metamorphic core complex lower plate in the sierras Las Jarillas-El Potrero, northern Sonora

Revista Mexicana de Ciencias Geológicas
The area of sierras Las Jarillas-El Potrero in northern Sonora is interpreted as a portion of the lower plate of the Magdalena metamorphic core complex. Rock units that characterize this locality range in age from Jurassic to Eocene.
Teresita Sánchez Navarro, Michelle Vázquez Salazar, Carlos M. González-León, Luigi A. Solari, Anne E. Egger, Teresa Orozco-Esquivel, Margarita López-Martínez, Jonathan A. Nourse, Ofelia Pérez Arvizu, Rufino Lozano-Santacruz   +9 more
doaj   +1 more source

Typification of platinim metal bearing picrites from the north-west of Kansk greenstone belt (East Sayan)

Известия Томского политехнического университета: Инжиниринг георесурсов, 2018
The objects of the study are mafic-ultramafic complexes of Kulibinsk potential ore unit, including intrusive bodies of kingashsk complex and metavolcanic rocks of kuliginskaya and kuzinskaya series; the studied objects are located at the north-west edge ...
Alexey Ivanovich Chernyshov, Nikita Anatolievich Babintsev   +1 more
doaj   +2 more sources

Progress in the Application of Oxygen Isotopes in the Study of Petrogenesis

Yankuang ceshi, 2013
Since different types of rocks on the earth have different oxygen isotope compositions, they can be used to discuss the origins of various rocks and it has become a powerful tool for studying petrology.
LI Tie-jun
doaj  

Multi-analytical characterization and radiation shielding assessment of natural ophiolitic rocks: a combined experimental, mineralogical, and simulation analysis. [PDF]

Sci Rep
Agha MA, Abouelnour MA, Fathy IN, Mahmoud AA, Oraby H, Ezzat A, Elfakharany ME, Nabil IM, Mahmoud AS.   +8 more
europepmc   +1 more source