Results 31 to 40 of about 6,150 (210)

Metamorphism and exhumation of basement gneiss domes in the Quadrilátero Ferrífero: Two stage dome-and-keel evolution? [PDF]

Geoscience Frontiers, 2019
Abstract The presence of dome-and-keel provinces in Archean cratons has been connected with the initiation of plate tectonics on Earth as these features are most commonly observed in Archean rocks. The Quadrilatero Ferrifero in Brazil has been identified as a Paleoproterozoic dome-and-keel province for more than three decades.
Cutts K., Lana C., Alkmim F., Farina F., Moreira H., Coelho V.   +5 more
openaire   +2 more sources

Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example form the Isle of Rum, NW Scotland [PDF]

, 2009
Sr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early ...
Ellam, R.M., Emeleus, C.H., Hertogen, J., Meyer, R., Nicoll, G.R., Troll, V.R.   +5 more
core   +1 more source

Prospects for Developing Compressed Air Energy Storage in Saudi Arabia

IET Smart Energy Systems, EarlyView.
Under Saudi Arabia's Vision 2030, this paper analyses the supporting role of Compressed Air Energy Storage in high‐penetration renewable energy systems and, in light of the local geological resources and grid conditions, demonstrates its feasibility for deployment and future development prospects.
Mingzhong Wan, Jun Li, Xiaoping Wang, Size Li, Jingcui Li, Priyank Lathwal, Zhide Zhu   +6 more
wiley   +1 more source

Assessing Inheritance of Zircon and Monazite in Granitic Rocks from the Monashee Complex, Canadian Cordillera [PDF]

, 2007
Zircon and monazite from granitic sheets and dikes in the Monashee complex, Canadian Cordillera, were investigated to determine whether igneous crystallization occurred at 1.9 Ga or 50 Ma with 1.9 Ga inherited zircon and monazite.
Brown, R. L., Crowley, James, Gervais, F., Gibson, H. D.   +3 more
core   +3 more sources

Jadeite in Continental Subduction: Its Preservation, Breakdown and Pseudomorphic Replacement in Erzgebirge UHP Gneisses

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The absence of jadeite in regions where subduction of continental crust has been documented by other high‐pressure (HP) or ultrahigh‐pressure (UHP) minerals is striking. This study presents only the second discovery of jadeite in the crystalline rocks of the Erzgebirge, a region known for its occurrences of microdiamond, coesite and omphacite ...
Ondrej Lexa, Martin Racek, Petr Jeřábek, Benjamin Paddon   +3 more
wiley   +1 more source

Oblique dilation, melt transfer, and gneiss dome emplacement

Geology, 2010
The upward transfer of partially molten crust and the formation of gneiss domes and metamorphic core complexes commonly take place by localization of normal or oblique extension in the middle and upper crust. In Marie Byrd Land, Antarctica, a transition from wrench to oblique extension occurred during oblique plate divergence along the East Gondwana ...
McFadden, R.R, Teyssier, C, Siddoway, Christine Smith, Whitney, Donna, Fanning, Christopher   +4 more
openaire   +2 more sources

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

Kinematics of the Southern Rhodope Core Complex (North Greece) [PDF]

, 2007
The Southern Rhodope Core Complex is a wide metamorphic dome exhumed in the northern Aegean as a result of large-scale extension from mid-Eocene to mid-Miocene times.
A Harkovska, A Kilias, A Kilias, A Kokkinakis, A Kounov, A Liati, A Liati, A Liati, A Liati, A Liati, A Liati, A Marakis, A Moro Del, B Wernicke, B Wernicke, BC Burchfiel, C Kissel, C Kolocotroni, C Tirel, CB Papazachos, CB Papazachos, D Berthé, D Gapais, D Kondopoulou, D Sokoutis, DA Dinter, DA Dinter, DA Dinter, Dimitrios Sokoutis, E Hejl, ED Mposkos, F Kockel, G Ranalli, GS Lister, H Haubold, IG Paishin, J Dixon, J Driessche Van Den, J Mascle, J Wakabayashi, J-P Brun, Jean-Pierre Brun, JP Burg, JP Burg, L Block, L Jolivet, L Lee, LE Ricou, LJ Sonder, MD Crittenden, N Lalechos, N Lyberis, N Wawrzenitz, P Bird, P Gautier, P Gautier, P Gautier, P Gautier, P Gautier, P Kronberg, P Turpaud, RD Hyndman, S Dimitriadis, S Dimitriadis, T Reischmann, TV Gerya, W Harre, W Meyer, WR Buck, X Le Pichon   +69 more
core   +10 more sources

Tectonic uplift mechanism of the Goodenough and Fergusson Island gneiss domes, eastern Papua New Guinea: Constraints from seismic reflection and well data

Geochemistry, Geophysics, Geosystems, 2013
The D'Entrecasteaux Island (DEI) gneiss domes are fault‐bounded domes with ∼2.5 km of relief exposing ultrahigh‐pressure (UHP) and high‐pressure (HP) metamorphic gneisses and migmatites exhumed in an Oligocene‐Miocene arc‐continent collision and ...
Guy Fitz, Paul Mann
doaj   +1 more source

Disentangling palaeoecological and outcrop controls on MISS occurrence in c. 1 Ga fluvio‐lacustrine facies of the Diabaig Formation, Scotland

Sedimentology, EarlyView.
ABSTRACT The c. 1 Ga Diabaig Formation of north‐west Scotland preserves diverse lacustrine and fluvial facies and abundant microbial and non‐microbial surficial sedimentary features. 172.6 m of section was logged across seven localities to assess the distribution of microbially induced sedimentary structures (MISS) relative to lithofacies, substrate ...
Seán T. Herron, Neil S. Davies, William J. McMahon   +2 more
wiley   +1 more source