 | | Journal (article/letter/editorial) | | eclogites (AiguiUes Rouges massif, Western Alps, France): evidence of crustal origin and metasomat/c alteration...Metabasic rocks interbedded in amphibolite facies supracrustal gneisses outcrop around Lac Cornu in the A~gmllesRouges...belong on a regional scP:le to ~he almandine-amphibolite subfacies. The age of the metamorphism which... LITHOS O,lmm . 14(1981) Boudinaged amphibolite,,~ outcrop at numerous places in the massif. They...lase-hornblende association in the ec~ogite amphibolite (see text). deformation. Its influence is restricted |  | | Report (volume) | | ...................................... . In amphibolite. ...................... r ............................. 85 35 Corundum (emery) in amphibolite at Chester, Mass...........' . In anorthosite --...-........................... Origin of emery in amphibolite at Chester, Mass.................. * 81 86 92...corundum localities in the United States. ....... II. Outcrop of peridotite at Buck Creek, Clay County, N. C...peridotite area, showing the relation of the amphibolite dikes...........................-.--.......--- |  | | Journal (article/letter/editorial) | | Building 420, Beltsville, Maryland Gneissic Amphibolite at Las Palmas, Puerto Rico, and Its Significance...chert and spilite, and locally small blocks of amphibolite. A detailed structural and metamorphic study...study of a relatively large block of gneissic amphibolite at Las Palmas reveals that the rock has undergone...serpentinite. The first event recorded by the amphibolite is amphibolite facies regional metamorphism. Foliation...but metamorphosed mafic dikes cut the gneissic amphibolite. As the metamorphic grade decreased further, |  | Franceschelli, Marcello, Puxeddu, Mariano, Cruciani, Gabriele, Dini, Andrea, Loi, Marilisa (2005) Layered amphibolite sequence in NE Sardinia, Italy: remnant of a pre-Variscan mafic silicic layered intrusion?. Contributions to Mineralogy and Petrology, 149 (2) 164-180 doi:10.1007/s00410-004-0642-7 | Journal (article/letter/editorial) | | Cruciani Æ Andrea Dini Æ Marilisa Loi Layered amphibolite sequence in NE Sardinia, Italy: remnant of a...Abstract A banded amphibolite sequence of alternating ultramafic, mafic (amphibolite) and silicic layers...Sardinia) and shows similarities with leptyno-amphibolite complexes. The ultramafic layers consist of amphibole...in many mafic silicic layered intrusions. Some amphibolite showing a strong Ti-, Pdepletion and REE-depletion...al. (2002) and Franceschelli et al. (2003). An outcrop at Monte Plebi, NE Sardinia, has attracted attention |  | Zhao, Lei, Zhai, Mingguo, Zhou, Xiwen, Santosh, M., Ma, Xudong (2015) Geochronology and geochemistry of a suite of mafic rocks in Chencai area, South China: Implications for petrogenesis and tectonic setting. Lithos, 236. 226-244 doi:10.1016/j.lithos.2015.09.004 | Journal (article/letter/editorial) | | granulite, garnet-bearing amphibolite, biotite-bearing amphibolite, and amphibolite from the Chencai region...Cathaysia Block of South China, that mostly record amphibolite to granulite facies metamorphism. U–Pb dating...granulite and biotite-bearing amphibolite show broadly coeval magmatism, and amphibolite- to granulite-facies...metamorphism during 435–438 Ma. The garnet-bearing amphibolite also records metamorphism at 436 Ma and the magmatic...emplacement age of 422 Ma. Geochemically, the amphibolite and granulite have high Al2O3 contents and belong |  | | Journal (article/letter/editorial) | | shown that the rocks correspond to the epidote–amphibolite facies (T = 400– 450°C, P = 3–4 kbar) and are...consists of the foliated uniform amphibolite in the footwall and gneiss–amphibolite unit in the hanging wall...increases in the same direction as well. Garnet amphibolite from the upper reaches of the Kholodny Klyuch...chosen as an object of isotopic dating. Garnet amphibolite occurs in the hanging wall of the metamorphic...metamorphic complex and intercalates with common amphibolite and quartzitic gneiss (Fig. 3). The metamorphic rocks |  | | Report (chapter) | | May 21, 2018 The granulite- to eclogite- and amphibolite-facies transition: a volume and mass transfer...de Abstract: This study is focused on a specific outcrop in the Bergen Arcs, Norway where the transition...and the hydrated eclogite and amphibolite is exposed. In this outcrop the foliation in the granulite...continuous as it passes through eclogite- and amphibolite-facies rocks, presenting a challenge to understanding...increases from granulite to the eclogite and to the amphibolite. During hydration and metamorphism, the density |  | | Journal (article/letter/editorial) | | granulite facies and the transitional zone to amphibolite facies in the western part of the Aldan granulite...rocks: lower temperature rocks (conditions of amphibolite facies) are characterized by higher DREE values...granulite (outcrops 1365, 1564, 1585) and amphibolite (outcrop 1559 for comparison) facies in the upper...the upper reaches of the Aldan River [13]. In outcrop 1365, we studied highK charnockite nebulites (chgn...and 2654 ± 13 (1365yu) Ma [13]. In contrast, in outcrop 1585, we studied the early anatectic charnockite |  | | Report (volume) | | Corundum in amphibolite ................................. ........ 21 Corundum (emery) in amphibolite at Chester... 89 91 91 91 ILLUSTRATIONS. Page. PLATE I. Outcrop of peridotite at Buck Creek, Clay County, N. C...peridotite area, showing the relation of the amphibolite dikes........ ............. ..... .............Ideal vertical cross section of corundum in amphibolite at Hunters, Iredell County, N.C.......: .......some BULLETIN NO. 180 U. S. GEOLOGICAL SURVEY OUTCROP OF PERIDOTITE AT BUCK CREEK, CLAY COUNTY, N. C |  | | Journal (article/letter/editorial) | | staurolite from the Iratsu body, central epidote amphibolite Shikoku KAZUMIYOKOYAMA* and ATSUSHIGOTO** *Departmentof...corundum-bearing rocks from the Iratsu epidote amphibolite body in the highest grade metamorphic area of...of Mg rich staurolite from the Iratsu epidote amphibolite body in the Sanbagawa metamor phic belt which...Africa, respec rocks from the Iratsu epidote amphibolite body in the Sanbagawa metamorphic belt (Fig....only from the body to date. epidote already amphibolite. As the samples were described by Yokoyama (1980) |  | Dlamini, N., Hofmann, A., Belyanin, G., Xie, H., Kröner, A., Wilson, A., Slabunov, A. (2017) Supracrustal gneisses in southern Swaziland: a basalt-sandstone assemblage of the upper Mozaan Group deformed in the Neoarchaean. South African Journal of Geology, 120 (4) 477-498 doi:10.25131/gssajg.120.4.477 | Journal (article/letter/editorial) | | assemblage of ductilely deformed supracrustal rocks (amphibolite and quartzite) and granitoid gneisses intruded...compositionally similar to sandstones from the Mozaan Group. LA-ICP-MS U-Pb analysis of zircon grains from grey quartzite...three deformational events (D1, D2 and D3) at amphibolite and retrograde greenschist facies grade. The...South Africa, 1988) as greenstone remnants (amphibolite, talc-carbonate schist and serpentinebearing...a heterogeneous assemblage of serpentinite, amphibolite, gabbroic gneiss, quartzite, diorite, augen-gneiss |  | | Report (issue) | | crystalline terrane. The mica schist and gneiss and amphibolite southwest of Newland pass northward through a...predominate is in almost direct contact with amphibolite and mica schist lacking granitic layers. (STOP...blastomylonite (STOP 4). The mica schist and amphibolite have a crystalloblastic texture, except in a...retrogressive metamorphism they have been converted to amphibolite and metagabbro. Near the northern edge of the...Ridge thrust sheet in having less mica schist, amphibolite, and migmatite, different structural and petrographic |  | | Report (issue) | | crystalline terrane. The mica schist and gneiss and amphibolite southwest of Newland pass northward through a...predominate is in almost direct contact with amphibolite and mica schist lacking granitic layers. (STOP...blastomylonite (STOP 4). The mica schist and amphibolite have a crystalloblastic texture, except in a...retrogressive metamorphism they have been converted to amphibolite and metagabbro. Near the northern edge of the...Ridge thrust sheet in having less mica schist, amphibolite, and migmatite, different structural and petrographic |  | | Journal (article/letter/editorial) | | regional schistosity. In the Moyale sub-area amphibolite facies conditions prevailed, whereas in the Agal...sub-area peak conditions did not exceed epidote-amphibolite facies. Plagioclase-hornblende thermometry gives... 584 0 1Kin Metagranodiorite Porphyritic amphibolite $1 fabric Gabbro.-diorite Amphibolitic gneiss...'amphibolitic gneiss' and 'porphyritic amphibolite'. The 'amphibolite gneiss' is the dominant type and ranges...rocks occur in subordinate amounts within the amphibolite of the Agal sub-area. The largest, a north-south-trending |  | Weber, Bodo, González-Guzmán, Reneé, Manjarrez-Juárez, Román, Cisneros de León, Alejandro, Martens, Uwe, Solari, Luigi, Hecht, Lutz, Valencia, Victor (2018) Late Mesoproterozoic to Early Paleozoic history of metamorphic basement from the southeastern Chiapas Massif Complex, Mexico, and implications for the evolution of NW Gondwana. Lithos, 300. 177-199 doi:10.1016/j.lithos.2017.12.009 | Journal (article/letter/editorial) | | rutile in 30 titanite and clinopyroxene in amphibolite further indicate a previous metamorphic event...felsic orthogneiss boudins hosted in deformed amphibolite and 32 migmatite yield crystallization ages...zircon from a banded gneiss. Zircon from folded amphibolite samples yield 35 mainly Ordovician ages ranging...precipitation from anatectic melts. In addition, some amphibolite samples contain inherited zircon 40 yielding...data indicate 41 that the protoliths of the amphibolite have E-MORB characteristics and were derived |  | | Journal (article/letter/editorial) | | consists of an association of garnetiferous amphibolite and calc-silicate that was intruded at 3388 ±...deformation of the greenstones and granitoids under amphibolite facies conditions (7 kbar and 600 to 650°C) took...Major element contents of nine granitoid and one amphibolite sample were determined using the Panalytical...area (Figure 4) is a ca. 3 km long stretch of outcrop exposed in the bed of the White Mfolozi River flowing...layers. Where the trondhjemite is more massive on outcrop-scale and less deformed, compositionally and temporally |  | Li, Ruibao, Pei, Xianzhi, Yang, Shuanhai, Wei, Liyong, Li, Zuochen, Yang, Gaoxue, Xu, Duoxun, Liu, Mannian, Kou, Ting (2016) Mid-Neoproterozoic Tadong amphibolites at the junction of the East Kunlun and Western Qinling Orogens – a record of continental rifting during the break-up of Rodinia. International Geology Review, 58 (4) 455-470 doi:10.1080/00206814.2015.1089423 | Journal (article/letter/editorial) | | The mineral assemblage of the TDA exhibits amphibolite facies metamorphism, and the protolith is basic...plasma-mass spectrometry (LA-ICP-MS) zircon U–Pb age and geochemical data of TDA. LA-ICP-MS U–Pb zircon age... Most samples exhibit high Nb/Ta (16.6–17.4), Nb/La (0.70–0.94), and positive ΔNb (ΔNb = 1.74 + log (Nb/Y)...Group (Pt1J) mainly includes strongly deformed amphibolite, mica-schist, and paragneiss, with some deformed...schist and biotite quartz schist, with a few amphibolite (metabasalt) interlayers. The upper Palaeozoic–Mesozoic |  | | Journal (article/letter/editorial) | | three separate, closely spaced lines of amphibolite outcrop, interpretation of the original amphtbolite...amphtbolite stlatigraphy (i.e. recognition of discrete amphibolite units) is diffic~it. This is because there are...between individual lenses, and ~ecause the effect on outcrop patterns of complex multiple folding is imperfectly...imperfectly understood. Discoatinuity of the amphibolite bands along st,'ike may be due to either original...particularly close field association between amphibolite and quartzite. reminiscent of the common association |  | | Journal (article/letter/editorial) | | ex- Fig. 3. Lamination and deformation in amphibolite outcrop, Tegina area. 383 Fig. 4. Photomicrograph...bAverage Tegina amphibolite (Hornblende) (30 samples). CAverage Tegina epidote---amphibolite (8 samples)...dAverage Alawa banded amphibolite (NW Nigeria) (15 samples). eAverage Egbe massive amphibolite (West-central...Ilesha massive amphibolite (SW Nigeria) (25 samples). gAverage Wonu banded amphibolite (SW Nigeria) (10 |  | | Journal (article/letter/editorial) | | form separate bodies closely associated with amphibolite in the Lechana area. They occur as inclusions...inclusions within ~2.65 Ga tonalite gneiss. Amphibolite is massive, has a stratiform occurrence and is folded...hosite intruding along the fold limbs. Rare amphibolite xenoliths occur in gabbro-leucogabbro-anorthosite...Ga (2013 ± 18 Ma) U-Pb zircon overgrowth age. Amphibolite exhibit prominent granoblastic polygonal fabric...serpentinized and host widespread magnetite-rich layers. Amphibolite and associated gabbro have conspicuous sulphide |  | Beard, Brian L., Medaris, L. Gordon, Johnson, Clark M., Jelínek, Emil, Tonika, J., Riciputi, Lee R. (1995) Geochronology and geochemistry of eclogites from the Mariánské Lázně Complex, Czech Republic: Implications for Variscan orogenesis. Geologische Rundschau, 84 (3) 552-567 doi:10.1007/bf00284520 | Journal (article/letter/editorial) | | Tepl&Barrandian microplate and consists of metagabbro, amphibolite and eclogite, with subordinate amounts of serpentinite...--+7, and 367 + 4 Ma. Samples of eclogite and amphibolite do not define a whole rock Sm-Nd isochron, even...(1991); lenses of feldspathic gneiss in garnet amphibolite are not shown for the sake of clarity. Investigated...Sample Localties arble,Calc-SilicateRock, Epidote Amphibolite 1-~ Gneiss N Eclogiticrocks R Metagabbro...Stosch and ZEV N4 .J Amphibolite GarnetAmphibolite with Titanite Garnet Amphibolite with Rutile A N 50 |  | | Journal (article/letter/editorial) | | RELATIONS, PETROGRAPHY AND GEOCHEMISTRY OF ARCHAEAN AMPHIBOLITE DYKES AND MALENE SUPRACRUSTAL AMPHIBOLITES, NORTHWEST...relations, petrography and geochemistry of Archaean amphibolite dykes and Malene supracrustal amphibolites, northwest...northwest Buksefjorden. Eight varieties of Ameralik amphibolite dykes have been recognised on the basis of field...intruded by two principal varieties of Malene amphibolite dykes that are similar to two main categories...and Malene dykes are similar to the Tinissaq amphibolite dykes which intrude an older facies of Nfik gneisses |  | | Journal (article/letter/editorial) | | ............... Keewatinmeta-sediments and amphibolite............................ 344 344 346 346...The mineralization is near the contact between amphibolite (derived from lavas) and quartz-richschist (derived...Quartzo-feldspathic hornblendeschist(meta-tuff) Amphibolite(meta-basaltand meta-andesite) Post-Keewatin ...G. F. JOKLIK The schistosemeta-sedimentsthat outcrop in the southern part of the mineralized area are...Hornblende-rich,quartz-poorrocks,for the most part amphibolite,outcrop in the northernand easternportionsof the |  | Janoušek, V., Vrána, S., Erban, V., Vokurka, K., Drábek, M. (2008) Metabasic rocks in the Varied Group of the Moldanubian Zone, southern Bohemia - their petrology, geochemical character and possible petrogenesis. Journal of GEOsciences, 53 (1) 31-64 | Journal (article/letter/editorial) | | Bohemia). The amphibolites are dominated by amphibolite-facies mineral assemblages of mainly tschermakitic...rocks subjected to a high-grade (up to upper amphibolite-facies) metamorphic overprint (Floyd and Winchester...gneisses and subordinate carbonate rocks, in the amphibolite-facies Varied Group, particularly at the contact...Kaplice area (Kröner et al. 1988). The Variscan amphibolite-facies metamorphism has been dated con18 ventionally...numerous intercalations of marble (± dolomite), amphibolite, calc-silicate gneiss, graphitic gneiss and quartzite |  | | Report (volume) | | Elf amphibole-peridotite. Elf troctolite. Elf amphibolite. Elf gabbro. Shooting Creek dunite. Thumping...olivine-gabbro. Corrosion mantles—troctolite . Buck Creek amphibolite. Corundum Hill area. Corundum Hill dunite. Corundum...dunite. French Broad serpentine. Mica-diorite and amphibolite near Marshall. Peridosteatite at the Madison...igneous rocks . In peridotite . In pyroxenite . In amphibolite . 162 164 168 170 170 171 174 174 175 175 177...peridotite area, Jackson County, N. C.... 46 IX. A, Outcrop of laminated dunite at Webster, Jackson County |
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