Carbonate alteration of ophiolitic rocks in the Arabian–Nubian Shield of Egypt: sources and compositions of the carbonating fluid and implications for the formation of Au deposits [PDF]
, 2016 Ultramafic portions of ophiolitic fragments in the Arabian–Nubian Shield (ANS) show pervasive carbonate alteration forming various degrees of carbonated serpentinites and listvenitic rocks.
Azer, Mokhles K. +9 more
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GEODYNAMICS OF URANIUM ORE FIELDS IN THE WESTERN PART OF THE INHUL MEGABLOK OF THE UKRAINIAN SHIELD
Геохімія техногенезу, 2021 The Ingul megablock of the Ukrainian Shield contains a number of endogenous deposits of the sodium-uranium formation, which have been developed for more than 55-60 years.
V. Verkhovsev, +5 more
doaj +1 more source
U–Pb dating and Sm–Nd isotopic analysis of granitic rocks from the Tiris Complex : new constaints on key events in the evolution of the Reguibat Shield, Mauritania [PDF]
, 2012 The Reguibat Shield of N Mauritania and W Algeria represents the northern exposure of the West African Craton. As with its counterpart in equatorial West Africa, the Leo Shield, it comprises a western Archaean Domain and an eastern Palaeoproterozoic ...
Abdouloye, T.B. +6 more
core +1 more source
Uplift History of the Eastern Pamir Inferred from Inversion of Thermochronometric Data and River Profile [PDF]
LithosphereThe Pamir salient accommodates a great amount of Cenozoic India-Eurasia convergence in the forms of thrusting, strike-slip faulting, extension, and gneiss dome formation. It thus becomes a key location for exploring the orogenic tectonic evolution. Here,
Yunpeng Wu +6 more
doaj +1 more source
Evidence for Seismogenic Hydrogen Gas, a Potential Microbial Energy Source on Earth and Mars [PDF]
, 2016 M thanks the STFC for a PhD studentship and the NASA Astrobiology Institute for additional funding (NNAI13AA90A; Foundations of Complex Life, Evolution, Preservation and Detection on Earth and Beyond).
Blamey, Nigel J F +2 more
core +1 more source
BSGF - Earth Sciences Bulletin, 2017 A new structural map of the Paleozoic crust of the Pyrenees based on an extensive compilation and new kinematic data allows for the evaluation of the mechanical coupling between the upper and lower crust of the abnormally hot foreland of the Variscan ...
Cochelin Bryan +4 more
doaj +1 more source
Evaluating the importance of metamorphism in the foundering of continental crust. [PDF]
Sci Rep, 2017 The metamorphic conditions and mechanisms required to induce foundering in deep arc crust are assessed using an example of representative lower crust in SW New Zealand. Composite plutons of Cretaceous monzodiorite and gabbro were emplaced at ~1.2 and 1.8
Chapman T +3 more
europepmc +4 more sources
Geochemistry, Geophysics, Geosystems, 2014 Domal structures within the D'Entrecasteaux Islands of eastern Papua New Guinea expose ultrahigh‐pressure (UHP) Pliocene (5.6–4.6 Ma) eclogites and evidence for partial melting.
Joel W. DesOrmeau +3 more
doaj +1 more source
Contrasted tectonic styles for the Paleoproterozoic evolution of the North China Craton. Evidence for a ~2.1 Ga thermal and tectonic event in the Fuping Massif [PDF]
, 2008 International audienceStructural analysis along with 40Ar–39Ar and U–Pb datings in the Fuping massif provide new insight into the evolution of the eastern part of the Trans-North China Belt (North China Craton), from 2.7 Ga to 1.8 Ga.
Bruguier, Olivier +4 more
core +2 more sources
Thermal consequences of mantled gneiss dome emplacement
Earth and Planetary Science Letters, 1989 Abstract Bodies of rock within the crust that have higher thermal conductivities than surrounding rocks serve as conduits for the diffusive flow of heat. The resultant focusing of heat creates an apparent “contact metamorphic aureole” in the surrounding rocks, without the high-conductivity rocks being a heat source themselves. Two-dimensional thermal
Tim Allen, C.Page Chamberlain
openaire +1 more source