Results 131 to 140 of about 128,769 (349)

Post-Hercynian ultrahigh-temperature tectono-metamorphic evolution of the Middle Atlas lower crust (central Morocco) revealed by metapelitic granulite xenoliths [PDF]

Solid Earth
The study of metapelitic sillimanite- and garnet-bearing granulite xenoliths brought to the surface by the basanite of the 650 ka Tafraoute maar shed new light on the lower crust of the Tabular Middle Atlas (Morocco).
A. El Maz, A. Vauchez, J.-M. Dautria
doaj   +1 more source

Magnetostratigraphy and Source Characterisation Across the Early Miocene Unconformity, Northern Rocky Mountains, USA

Terra Nova, EarlyView.
ABSTRACT The early Miocene unconformity (EMU) formed during a transition in the tectonic regime of western North America that coincided with faunal diversification. The Railroad Canyon section in the northern Rocky Mountains provides a complete geologic record around this event. Our new magnetostratigraphic study in combination with published U‐Pb ages
Dieke Gerritsen, Stuart A. Gilder, Alina L. Ludat, Michael R. Wack   +3 more
wiley   +1 more source

Kuroko Deposits of NE Japan: The Product of High‐Temperature, Shallow Felsic Volcanism in a Deepening Continental Rift

Terra Nova, EarlyView.
ABSTRACT The Hokuroku district of NE Japan hosts the type locality for Kuroko volcanic‐hosted massive sulphide (VHMS) deposits, which are the product of seafloor hydrothermal venting in a continental rift during the opening of the Sea of Japan in the Miocene.
Andrea Agangi, Gabriela Nogo Retnaningtyas Bunga Naen, Manuel Nopeia, Hossain Amini, Ryohei Takahashi, Pearlyn Manalo   +5 more
wiley   +1 more source

Thermal structure and exhumation history of the Lesser Himalaya in central Nepal [PDF]

, 2004
The Lesser Himalaya (LH) consists of metasedimentary rocks that have been scrapped off from the underthrusting Indian crust and accreted to the mountain range over the last ~20 Myr. It now forms a significant fraction of the Himalayan collisional orogen.
Avouac, J. P., Beyssac, O., Bollinger, L., Catlos, E. J., Goffé, B., Grove, M., Harrison, T. M., Sapkota, S.   +7 more
core   +1 more source

Petrology and geochemistry of Late Proterozoic hornblende gabbros from southeast of Fariman, Khorasan Razavi province, Iran

Journal of Economic Geology, 2015
Introduction Hornblende-bearing gabbroic rocks are quite common in subduction-related magmatic suites and considered to represent magmatic differentiation process in arc magmas (Heliker, 1995; Hickey-Vargas et al., 1995; Mandal and Ray, 2012).
Seyed Masoud Homam
doaj  

Fe Oxidation State and Oxygen Isotope Composition of Diverse Metasomatized Peridotite Rocks

Terra Nova, EarlyView.
ABSTRACT Metasomatic fluids are thought to be oxidising agents that react with the surrounding mantle rocks, causing changes in the bulk Fe3+/ΣFe, their redox state, and affecting the partitioning of trace elements and the fractionation of O isotopes. Worldwide distributed metasomatized peridotites represent the ideal case study to investigate the role
Federica Benedetti, Giulia Marras, Enrico Cannaò, Gianluca Bianchini, Daniele Brunelli, Luigi Dallai, Vincenzo Stagno   +6 more
wiley   +1 more source

Integration of natural data within a numerical model of ablative subduction: A possible interpretation for the Alpine dynamics of the Austroalpine crust

, 2012
A numerical modelling approach is used to validate the physical and ge- ological reliability of the ablative subduction mechanism during Alpine con- vergence in order to interpret the tectonic and metamorphic evolution of an inner portion of the Alpine ...
Andreoli, Ayrton, Babist, Bachmann, Beltrando, Best, Blanco-Quintero, Bousquet, Bousquet, Brun, Castelli, Castelli, Cenki-Tok, Chemenda, Chopra, Christensen, Clift, Cloos, Cloos, Cloos, Compagnoni, Cortiana, Cosca, Cruciani, Currie, Dal Piaz, Dal Piaz, Dal Piaz, Dal Piaz, Dallmeyer, Dallmeyer, Delleani, Desmons, Dubois, Duchêne, Engi, Ernst, Ernst, Faccenda, Faryad, Flueh, Frey, Froitzheim, Gaidies, Gaidies, Gardien, Gazzola, Gerya, Gerya, Gerya, Giorgetti, Gosso, Gosso, Gregurek, Groppo, Guillot, Guntli, Habler, Habler, Haenel, Handy, Handy, Handy, Hellwig, Hoinkes, Hopfer, Hunziker, Hunziker, Hy, Hyndeman, Hyndman, Inger, Janak, Karato, Kienast, Kienast, Kirby, Koller, Konzett, Kurz, Lallemand, Lardeaux, Lardeaux, Lardeaux, Linner, Mandl, Marotta, Marotta, Meda, Miller, Neubauer, Oberhänsli, Oberhänsli, Pennacchioni, Pennacchioni, Platt, Pognante, Pognante, Pognante, Poli, Polino, Putis, Putis, Ranalli, Rebay, Rebay, Reinsch, Ring, Roda, Roda, Roda, Rolfo, Rolland, Rondenay, Rosenbaum, Rubatto, Rubatto, Rubatto, Ruffet, Scambelluri, Schmid, Schneider, Schreiber, Schuster, Schuster, Schuster, Schwartz, Schwartz, Shreve, Smart, Solva, Solva, Spalla, Spalla, Spalla, Spalla, Spalla, Stöckhert, Stüwe, Stüwe, Tenczer, Tenczer, Thompson, Thompson, Thöni, Thöni, Thöni, Tomaschek, Torok, Torok, Tropper, Tropper, Tropper, Turcotte, Vuichard, Wakabayashi, Wakabayashi, Warren, Wiesinger, Williams, Yamato, Zanchetta, Zanoni, Zanoni, Zanoni, Zucali, Zucali, Zucali   +167 more
core   +1 more source

Tracking Sediment Mixing Along the Lower Danube River From the Carpathians to the Black Sea

Terra Nova, EarlyView.
ABSTRACT We use detrital zircon U–Pb geochronology as a sediment provenance tracer in modern river sands to better understand how tectonic, climatic, and anthropogenic processes modulate sediment transport dynamics of the Carpathians to the Black Sea source to sink system.
Iulian Pojar, Tomas Capaldi, Cornel Olariu, Andrei‐Gabriel Dragoș, Relu Dumitru Roban, Mihaela C. Melinte Dobrinescu   +5 more
wiley   +1 more source

Deformation history and nappe stacking in Rudabánya Hills (Inner Western Carpathians) unravelled by structural geological, metamorphic petrological and geochronological studies of Jurassic sediments [PDF]

, 2009
Szilvia Kövér, László Fodor, Katalin Judik, Tibor Németh, Kadosa Balogh, Sándor Kovács   +5 more
openalex   +1 more source

Cooling and Exhumation History of the Paris Basin Southeastern Margin Revealed by Δ47 /U–Pb Carbonate Thermochronology

Terra Nova, EarlyView.
ABSTRACT This study applies Δ₄₇/U–Pb thermochronology to the Middle Jurassic carbonates exposed in the southeastern margin of the Paris Basin. By integrating clumped isotope analyses and U–Pb dating of diagenetic carbonates, we reconstruct the thermal and exhumation history of the sedimentary succession.
Marta Gasparrini, Xavier Mangenot, Magali Bonifacie, Pierre Deschamps, Andrea Ceriani   +4 more
wiley   +1 more source