1-20 OF 57 RESULTS FOR

blueschist

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Published: 26 June 2017
European Journal of Mineralogy (2017) 29 (6): 959-970.
... of blueschists and high- P amphibolites found as isolated blocks in the metasediments of the Chilean Coastal Cordillera. * Corresponding author, e-mail: jmgonzj@ugr.es 11 11 2016 6 4 2017 28 4 2017 © 2017 E. Schweizerbart'sche Verlagsbuchhandlung, D-70176 Stuttgart 2017...
FIGURES | View All (6)
Journal Article
Published: 03 April 2017
Geological Magazine (2017) 155 (2): 316-334.
..., mineral chemistry and thermodynamic modelling reveal that the mafic schists followed contrasting P–T paths during their tectonometamorphic evolutions. In the schists of the Chah Gorbeh and Ophiolitic complexes an early greenschist-facies stage was later overprinted by blueschist-facies phase assemblages...
FIGURES | View All (9)
Series: GSA Special Papers
Published: 01 December 2015
DOI: 10.1130/2015.2513(08)
... ultramafic belt is an imbricate zone of slices of ultra-mafic rocks, Paleozoic amphibolite, and Triassic–Jurassic blueschist, with blueschist interleaved structurally between east-dipping serpentinite units. The Downieville fault and Feather River ultramafic belt are viewed as elements of a Triassic–Jurassic...
Series: GSA Special Papers
Published: 01 August 2011
DOI: 10.1130/2011.2480(01)
... include oceanic basalts and chert with rare blueschist and amphibolite. Hornblendes from three amphibolite blocks that crop out in serpentinite mélange and sedimentary serpentinite yield 40 Ar/ 39 Ar plateau ages of 165.6–167.5 Ma, similar to published ages of high-grade blocks within the Franciscan...
Series: GSA Special Papers
Published: 01 July 2008
DOI: 10.1130/2008.2438(08)
... that blueschists are the oldest known subduction-zone rocks of the western North American Cordillera. The blueschists are juxtaposed with kilometer-scale tectonic blocks of ca. 565 Ma tonalite. Detrital zircons from the blueschists require close proximity to a diverse source of cratonal or derivative supracrustal...
Series: GSA Field Guide
Published: 01 January 2007
DOI: 10.1130/2007.fld009(08)
EISBN: 9780813756097
... Juan Islands might have been related to coeval orogenic activity in the neighboring Coast Plutonic Complex, and the origin of blueschist metamorphism in the thrust system relative to subduction and nappe emplacement. The geology of this trip has many counterparts in other outboard regions...
FIGURES | View All (30)
Journal Article
Published: 01 February 2002
Mineralogical Magazine (2002) 66 (1): 5-24.
...A. Hynes Abstract Most unroofing mechanisms invoked for the exhumation of blueschist-plus-eclogite terranes, including corner-flow and extensional collapse of the orogenic wedge, predict steep unroofing paths for the deeply-buried rocks and are applicable only to unroofing from depths within...
FIGURES | View All (13)
Journal Article
Published: 01 January 2002
Journal of the Geological Society (2002) 159 (1): 45-60.
...MARIO SÁNCHEZ-GÓMEZ; DOV AVIGAD; ARIEL HEIMANN Abstract In the Cyclades, low-angle normal faults juxtaposed Miocene sedimentary rock units lying over Alpine blueschist- and greenschist-facies metamorphic rocks and Miocene granites. The sedimentary units in the hanging wall were deposited in fault...
FIGURES | View All (6)
Journal Article
Published: 01 July 2000
Geological Magazine (2000) 137 (4): 367-380.
... unit. The upper unit (South Evia Blueschist Belt) is thought to be the westward continuation of the Cycladic blueschist belt metamorphosed at high-pressure conditions during Late Cretaceous–Eocene times. The underlying unit (the Almyropotamos Unit) is a continental margin sequence covered by a flysch...
FIGURES | View All (13)
Journal Article
Journal: Geology
Published: 01 January 2000
Geology (2000) 28 (1): 19-22.
... exposed at two widely separated areas along this belt consist of blueschist-bearing melange and are bounded by Late Triassic–Early Jurassic, domal, low-angle normal faults. We propose that this melange was underplated to the Qiangtang block and was subsequently exhumed by detachment faulting; both...
FIGURES | View All (6)
Journal Article
Published: 01 March 1999
Geological Magazine (1999) 136 (2): 111-118.
Journal Article
Published: 01 December 1997
Mineralogical Magazine (1997) 61 (6): 835-843.
...Aral I. Okay Abstract Blueschist-facies rocks with jadeite-K-feldspar-lawsonite paragenesis occur as exotic blocks in Miocene debris flows in the blueschist belt of northwest Turkey. The jadeite-K-feldspar rocks have a very fine grain size and although recrystallized locally retain a relict...
Journal Article
Published: 01 September 1997
Geological Magazine (1997) 134 (5): 703-716.
Journal Article
Published: 01 June 1997
European Journal of Mineralogy (1997) 9 (3): 547-562.
Journal Article
Published: 01 November 1996
Geological Magazine (1996) 133 (6): 697-711.
Journal Article
Published: 01 October 1996
European Journal of Mineralogy (1996) 8 (5): 917-925.
Journal Article
Published: 01 August 1996
Mineralogical Magazine (1996) 60 (4): 551-561.
Journal Article
Journal: GSA Bulletin
Published: 01 May 1995
GSA Bulletin (1995) 107 (5): 536-553.
... experienced an early (M 1a ) high-pressure/low-temperature metamorphism (pumpellyite-actinolite facies in the upper part of the section; blueschist facies at deeper structural levels) followed by a reenschist-facies overprint (M 1b ) and accompanied by D 1 deformation. A second deformational event, D 2...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1995
GSA Bulletin (1995) 107 (5): 520-535.
...T. A. Little; M. O. McWilliams; R. J. Holcombe Abstract Mechanisms proposed for exhumation of blueschists include whole-crust uplift and erosion, denudation by crustal-scale extensional faulting or ductile strain, and transport of blocks entrained in rising diapiric masses. Insight...
Journal Article
Journal: Geology
Published: 01 January 1995
Geology (1995) 23 (1): 85-88.
... with subduction and accretion of the Franciscan Complex to the west. The present-day geometry of tectonic wedging is incompatible with blueschist metamorphism in the Franciscan complex because the detachment for the wedge system would have prevented the transport of accretionary-wedge materials to great depth. We...