Results 41 to 50 of about 5,875 (167)

Lithospheric Unzipping Explaining Hot Orogenesis During Continental Subduction

Tectonics, Volume 44, Issue 7, July 2025.
Abstract Phanerozoic accretionary orogens typically contain upper crustal nappes derived from subducted lithosphere—oceanic or continental—that display (ultra‐)high‐pressure, low‐temperature ((U)HP‐LT) metamorphism. Surprisingly, such orogens often also contain coeval continent‐derived nappes that underwent “Barrovian” (MP‐HT) syn‐burial metamorphism ...
Douwe J. J. van Hinsbergen, Thomas N. Lamont, Carl Guilmette   +2 more
wiley   +1 more source

Extreme extension across Seram and Ambon, eastern Indonesia: Evidence for Banda slab rollback [PDF]

, 2013
The island of Seram, which lies in the northern part of the 180°-curved Banda Arc, has previously been interpreted as a fold-and-thrust belt formed during arc-continent collision, which incorporates ophiolites intruded by granites thought to have been ...
Hall, Robert, Pownall, Jon, Watkinson, Ian   +2 more
core   +4 more sources

Tectonic Setting and Evolution of Anatectic Melt Composition During Prograde Metamorphism up to UHT Metamorphism: Constraints From P–T–t–Melting Path From Rundvågshetta, Lützow–Holm Complex, East Antarctica

Journal of Metamorphic Geology, Volume 43, Issue 5, Page 467-495, June 2025.
ABSTRACT The pressure–temperature–time (P–T–t) evolution of a metapelitic ultrahigh‐temperature (UHT) granulite from Rundvågshetta (Lützow–Holm Complex, East Antarctica) and chemical evolution of partial melt during the prograde metamorphism up to UHT metamorphism are studied in detail.
Kota Suzuki, Tetsuo Kawakami, Tetsu Kogiso, Shuhei Sakata, Fumiko Higashino, Masanori Yokoi, Shumpei Kudo   +6 more
wiley   +1 more source

Siberian flood basalt magmatism and Mongolia-Okhotsk slab dehydration [PDF]

, 2008
Experimental data combined with numerical calculations suggest that fast subducting slabs are cold enough to carry into the deep mantle a significant portion of the water in antigorite, which transforms with increasing depth to phase A and then to phase ...
Alexei V. Ivanov, Konstantin D. Litasov
core   +1 more source

Zircon ages in granulite facies rocks: decoupling from geochemistry above 850 °C? [PDF]

, 2018
Granulite facies rocks frequently show a large spread in their zircon ages, the interpretation of which raises questions: Has the isotopic system been disturbed? By what process(es) and conditions did the alteration occur?
A Boriani, A Boriani, A Henk, A Langone, A Mulch, A Mulch, A Möller, A Zanetti, A Zingg, A Zingg, A-M Seydoux-Guillaume, AE Hofmann, B Bingen, B Schnetger, Barbara E. Kunz, BE Kunz, BE Kunz, C Annen, C Paton, C Paton, C Redler, C Redler, C Yakymchuk, CR McFarlane, CR McFarlane, D Regis, D Rubatto, D Rubatto, D Rubatto, D Rubatto, D Rubatto, Daniele Regis, DE Kelsey, DE Kelsey, DJ Cherniak, DJ Cherniak, DM Fountain, DM Fountain, E Rutter, EB Watson, EB Watson, EM Peterman, F Corfu, F Tomaschek, FJ Korhonen, G Bigi, G Fraser, G Peressini, G Rivalenti, G Rivalenti, G Vavra, G Vavra, GL Luvizotto, H Berckhemer, H Degeling, H Voshage, IS Williams, IS Williams, J Hermann, J Pape, J Sláma, JA Baldwin, JA Petrus, JE Quick, JE Quick, JF Diener, JW Valley, K Mezger, KR Mehnert, L Nasdala, L Nasdala, L Schiøtte, M Bertolani, M Bertolani, M Guillong, M Kohn, M Tichomirowa, MA Kusiak, MA Kusiak, Martin Engi, MJ Whitehouse, MP Roberts, MR Handy, MR Handy, NE Timms, NE Timms, NJ Pearce, NM Kelly, P Monjoie, P Vonlanthen, PW Hoskin, PW Hoskin, PW Hoskin, R Schuster, RC Ewing, RJ Taylor, RM Flowers, RT Pidgeon, S Barboza, S Barboza, S Bodorkos, S Capedri, S Piazolo, S Sinigoi, S Sinigoi, S Sinigoi, SE Jackson, SH Vorhies, SL Harley, SM Reddy, SM Schmid, SM Schmid, T Geisler, T Geisler, TA Ewing, U Schaltegger, U Schaltegger, U Schaltegger, U Schaltegger, US Klötzli, WF McDonough   +120 more
core   +1 more source

From Magma Formation to Eruption: Temperature Path of Two Late Carboniferous Post‐Collisional Calderas (Bohemian Massif)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.
Abstract The thermal evolution of magmatic systems of the Altenberg‐Teplice and Tharandter Wald calderas, which erupted during the terminal post‐collisional phase of the Variscan orogeny in the Bohemian Massif, was investigated. The zircon saturation temperatures and Ti‐in‐zircon thermometer indicate that the intrusive and extrusive units of the two ...
I. Olšanská, F. Tomek, C. Robustelli Test, E. Zanella, M. Svojtka, J. Trubač, F. Cifelli, F. Finger   +7 more
wiley   +1 more source

Asteroids and Archaean crustal evolution: Tests of possible genetic links between major mantle/crust melting events and clustered extraterrestrial bombardments [PDF]

Since the oldest intact terrestrial rocks of ca. 4.0 Ga and oldest zircon xenocrysts of ca. 4.3 Ga measured to date overlap with the lunar late heavy bombardment, the early Precambrian record requires close reexamination vis a vis the effects of ...
Glikson, A. Y.
core   +1 more source

Theoretical petrology [PDF]

, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source

U-Pb zircon geochronology and evolution of some Adirondack meta-igneous rocks [PDF]

An update was presented of the recent U-Pb isotope geochronology and models for evolution of some of the meta-igneous rocks of the Adirondacks, New York.
Mclelland, J. M.
core   +1 more source

Tectonic evolution of the Dom Feliciano Belt in Southern Brazil : geological relationships and U-Pb geochronology [PDF]

, 2016
O Cinturão Dom Feliciano, que se estende desde o leste do Uruguai até o sul do Brasil, representa um importante orógeno Neoproterozoico formado pela colagem de domínios oceânicos e fragmentos continentais entre os crátons Rio de La Plata, Congo e ...
Chemale Jr, Farid, Philipp, Ruy Paulo, Pimentel, Marcio Martins   +2 more
core   +2 more sources