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eclogitization

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Journal Article
Published: 01 December 1989
American Mineralogist (1989) 74 (11-12): 1409-1411.
...Tamsin C. McCormick; R. G. Coleman; J. G. Liou; A. El-Shazly; C. Oh; X. Wang; M. Enami; S. Maruyama; D. C. Harris Abstract ASBESTOS AND OTHER FIBROUS MATERIALS. By H. Catherine W. Skinner, Malcolm Ross, and Clifford Frondel. Oxford University Press, New York, 1988. 204 pages. $35.00. ECLOGITES...
Journal Article
Journal: Geology
Published: 04 August 2017
Geology (2017) 45 (10): 943-946.
... - T ) path culminating at P > 1.4 GPa and T > 950 °C in the Neoarchean. A basalt sill, converted to eclogite near the base of the domain, exhibits positive Eu anomalies consistent with plagioclase accumulation at a shallow crustal level prior to burial. Eclogite facies metamorphism previously...
FIGURES
Journal Article
Journal: Geology
Published: 01 June 2013
Geology (2013) 41 (6): 659-662.
...Junichi Nakajima; Naoki Uchida; Takahiro Shiina; Akira Hasegawa; Bradley R. Hacker; Stephen H. Kirby Abstract Eclogitization of the basaltic and gabbroic layer in the oceanic crust involves a volume reduction of 10%–15%. One consequence of the negative volume change is the formation of a paired...
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Journal Article
Journal: Geosphere
Published: 01 February 2011
Geosphere (2011) 7 (1): 202-218.
... in the Lofoten Islands of North Norway (latitude 68° N). Severely retrogressed eclogites occur in rare lenses or, even more rarely, hydrated shear zones within Archaean and Proterozoic granulite-facies Baltic basement gneisses. The timing of high-pressure metamorphism in Lofoten has been difficult to determine...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2403(09)
... Early Cretaceous lawsonite eclogites and related high-pressure rocks occur as tectonic inclusions within serpentinite mélange south of the Motagua fault zone, Guatemala. Petrologic and microtextural analyses of mafic high-pressure rocks reveal three metamorphic stages linked to several...
Journal Article
Published: 01 October 2004
American Mineralogist (2004) 89 (10): 1516-1524.
... with increasing pressure. H 2 O contents of eclogitic assemblages based on modal abundances calculated from electron microprobe analyses were combined with recent results from thermal modeling of subduction zones to discuss fluid release from the slab. The results indicate that, for cold subduction zones...
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Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.170.01.22
EISBN: 9781862394186
... Abstract This paper presents the results of a petrographical and mineral chemical study of glaucophane- and barroisite-bearing eclogites from the Upper Kaghan nappe in the Higher Himalayan Crystallines of the Pakistan Himalaya, and discusses the implications of the P–T path recorded...
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Series: GSA Special Papers
Published: 01 January 1975
DOI: 10.1130/SPE151-p77
... Eclogitic rocks occur in a restricted area, some 13 mi north of Fairbanks, as conformable bands and lenses intercalated with amphibolite, impure marble, and pelitic schist. The structural style of the eclogite-bearing terrane is characterized by northwest-trending, isoclinal recumbent folds...
Journal Article
Published: 01 January 2015
American Mineralogist (2015) 100 (1): 181-194.
...Hao Cheng; Jeffrey D. Vervoort Abstract Subduction of rocks into the mantle results in high-pressure metamorphism and the formation of eclogites from basaltic precursor rocks. In general, many kilometers of oceanic lithosphere are ultimately consumed prior to the subsequent continental slab...
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Journal Article
Published: 24 February 2011
Canadian Journal of Earth Sciences (2011) 48 (2): 441-472.
... exceptional exposures of high-pressure (HP) and ultra-high-pressure (UHP) rocks. The strategy adopted here involved sampling eclogite and associated late unstrained pegmatites to acquire the time of eclogite crystallization and subsequent exhumation, respectively. The oldest eclogite sampled is 415 ± 1 Ma...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 1988
GSA Bulletin (1988) 100 (3): 411-423.
...JOHN W. SHERVAIS; LAWRENCE A. TAYLOR; GUNTER W. LUGMAIR; ROBERT N. CLAYTON; TOSHIKO K. MAYEDA; RANDY L. KOROTEV Abstract Seven eclogitic nodules from kimberlites in southern Africa have been studied in detail for whole-rock, major- and trace-element geochemistry, petrography, and mineral chemistry...
Journal Article
Published: 01 February 1979
American Mineralogist (1979) 64 (1-2): 15-31.
... as basaltic volcan-ics and minor intrusives and their mildly and strongly rodingitized products, later metamorphosed under eclogite facies conditions. They show continuous variation in their bulk chemical, mineralogical, and textural properties from eclogite (metabasaltic, Cpx with Jd > 10 percent...
Journal Article
Published: 01 August 1968
American Mineralogist (1968) 53 (7-8): 1347-1367.
...Ikuo Kushiro; Ken-ichiro Aoki Abstract Of six eclogite inclusions in kimberlite of Roberts-Victor mine near Kimberley, South Africa, three are essentially bimineralic eclogites consisting of clinopyroxene and pyrope-rich garnet, and others contain phlogopite in addition to clinopyroxene and garnet...
Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (6): 1155-1168.
...Hafiz Ur Rehman; David Mainprice; Fabrice Barou; Hiroshi Yamamoto; Kazuaki Okamoto Abstract Electron back-scattered diffraction (EBSD) maps and crystal-preferred orientation (CPO) of eclogite-facies (omphacite and garnet) and amphibolite-facies (hornblende and actinolite) phases are reported...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 1998
GSA Bulletin (1998) 110 (5): 615-629.
...Philippe Erdmer; Edward D. Ghent; Douglas A. Archibald; Mavis Z. Stout Abstract Eclogite and blueschist in the Yukon-Tanana and Slide Mountain terranes in the Yukon and Alaska preserve a partial record of middle Paleozoic, late Paleozoic, and early Mesozoic subduction and subsequent unroofing. Near...
Journal Article
Published: 01 August 1995
American Mineralogist (1995) 80 (7-8): 799-809.
... of garnet from eclogite xenoliths brought to the surface by the Udachnaya kimberlite pipe, Yakutia, Siberia. Radiogenic isotopic data suggest that the eclogites could have been derived from an ultradepleted mantle at approximately 2.9 Ga (Pearson et al., 1995; Snyder et al., in preparation). O isotopic...
... an initial low-grade state contemporaneous with tectonism. Metamorphism and deformation appear to have been roughly coeval in both Shirataki and Oboke Districts. Eclogitic schlieren in a deformed peridotite, and in situ pods of eclogite in the surrounding amphibolite have been studied at Higashi-akaishi...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1965
GSA Bulletin (1965) 76 (5): 483-508.
...R. G COLEMAN; D. E LEE; L. B BEATTY; W. W BRANNOCK Abstract Eclogites are divisible into three groups based on mode of occurrence: Group A, inclusions in kimberlites, basalts, or layers in ultramafic rocks; Group B, bands or lenses within migmatite gneissic terrains; Group C, bands or lenses within...
Journal Article
Journal: Geology
Published: 01 December 2015
Geology (2015) 43 (12): 1071-1074.
...Shui-Jiong Wang; Fang-Zhen Teng; Roberta L. Rudnick; Shu-Guang Li Abstract The Mg isotopic compositions of garnet and clinopyroxene mineral separates and whole rocks from 21 xenolithic eclogites (11 low-MgO eclogites and 10 high-MgO eclogites) from the Koidu kimberlite complex, erupted within...
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Journal Article
Published: 01 November 2004
European Journal of Mineralogy (2004) 16 (6): 909-916.
...Thomas ZACK; Toby RIVERS; Richard BRUMM; Andreas KRONZ Abstract Lawsonite eclogite is a rare rock type that has been described from only five natural occurrences. In contrast, laboratory experiments and thermal models predict that lawsonite eclogite should be widespread in subducted oceanic crust...
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