 | | Report (issue) | | amphibolitized 38 olivine gabbro 22. Photomicrograph of amphibolite . 39 23. Photograph of a diallage-plagioclase...banding consisting of alternating olivine and bytownite layers separated by a reaction zone of orthop...olivine gabbro show a progressive alteration into amphibolite which consists of an assemblage of hornblend...occurs locally within the sill. Evidence that the amphibolite margin, previously termed Roan Gneiss, is orthoamphibolite...of Keith (1907) shows associated ultramafic-amphibolite bodies within a thick interlayered sequence of |  | | Report (issue) | | chiefly of metavolcanic rocks of greenschist and amphibolite grade that contain scarce metasedimentary layers...screens consist of metamorphosed flysch of upper amphibolite grade interlayered with minor vo'umes of metavolcanic... metaquartzite, and minor metaconglomerate, amphibolite, marble, and orthoquartzite. In addition to biotite...1982). If, as seems likely, Upper Cretaceous and lower Tertiary deposits once covered the Mount Laguna...2). The Elsinore fault zone is the westernmost on-land strand of the San Andreas fault system, and it is |  | | Book | | remained unknown until much later. The extensive outcrops of phyllite and slate were already well known...the pattern extends from 11 to 5c. (32 to 16 Ma) (Lower Oligocene to early Middle Miocene). However, the...formed by the Upper Cretaceous through Oligocene to Lower Miocene Rajang Group flysch (Figure 1). In Sarawak...predominantly throughout the Oligocene into the Lower Miocene and spectacular uplift in the Middle Miocene...term, for the region, although it does contain outcrops of Carboniferous-Permian basement rocks, is dominated |  | | Report (issue) | | (Albite) (Oligoclase) (Andesine) (Labradorite) (Bytownite) (Anorthite) Quartz Cristobalite Opal Pollucite...sparsely disseminated in uraniferous lignite in the lower Ludlow member of the Fort Union formation in the...occurs in several other mines and prospects in the lower Ludlow lignites. Harding County: 1. Abemathyite...in the siliceous gold ores of the Bald Mountain district three miles west of Lead by Ziegler (5) p 61....constituent of a schistose curnrningtonite-tourmaline amphibolite at the Newark gold mine five miles west of Custer |  | Pinheiro, M.A.P., Suita, M.T.F., Lesnov, F.P., Tedeschi, M., Silva, L.C., Medvedev, N.S., Korolyuk, V.N., Pinto, C.P., Sergeev, S.A (2019) Timing and petrogenesis of metamafic-ultramafic rocks in the Southern Brasília orogen: Insights for a Rhyacian multi-system suprasubduction zone in the São Francisco paleocontinent (SE-Brazil) Precambrian Research, 321. 328-348 doi:10.1016/j.precamres.2018.12.006 | Journal (article/letter/editorial) | | anomalies of Nb and Ce. The Lima Duarte nappe amphibolite has an andesitic basalt with an E- 28 MORB...facies for all the 30 samples and can be linked to lower intercepts aged between 560-590 Ma. Whole rock Nd...youngest, being ca. 600 Ma, associated with the amphibolite facies metamorphic overprint. REE analyses 39...Suprasubduction zone; U-Pb (SHRIMP) geochronology; N-MORB amphibolite; São Francisco paleocontinent, Southern Brasília...separates the MB from the Quadrilatero Ferrífero district (Fig. 1; Alkmin 127 and Teixeira., 2017; Ávila |  | | Book | | represents a fragment of a single North Atlantic land mass. The largest part of the ice-free area is made...structural divisions of Greenland the neighbouring land areas. in relation to Along the west coast of...polymetamorphic mineral assemblages, mainly in high amphibolite and hornblende granulite facies, are characteristic...Archaean gneisses. The gneisses are mostly in amphibolite facies though granulite facies gneisses occur...remobilised basement gneisses under upper greenschist-amphibolite facies conditions during the formation of the | | | Book | | Greenland represents a fragment single North Atlantic land mass. with of a The largest part of the ice-free...1. The structural divisions the neighbouring land areas. of Greenland in relation to Along the...Archaean gneisses. The gneisses are mostly in amphibolite facies though granulite facies gneisses occur...Archaean are known semblages, mainly in high amphibolite gneisses is thought and horn- to be due ...major mid-Palaeozoic fold belts occur in Green- land: the Caledonian fold belt of East and North-East |  | | Book | | ROCKS OF THE MIOGEOSYNCLINE, 8 UNDERSTOOD, 3 LOWER DISTRIBUTION AND CLASSIFICATION, 1 1870 to 1903—Mining...130 128 129 Occurrence and Nomenclature, 90 LOWER TRIASSIC, Conglomerate, Tebak Formation, 87 ...TO LOWER MESOZOIC 187 GRANITE, Epizone, 185 209 Lower Paleozoic, 209 Upper Paleozoic to Lower Mesozoic...Petrology of the Dolerite, Subsurface Deposits, LOWER 200 MIDDLE TO UPPER TRIASSIC VOLCANISM, CENOZOIC...Conditions of Metamorphism, Structure, 290 Amphibolite, Geochemistry, Petrology, Pelitic Rocks, |  | | Report (issue) | | ................... A8 Photograph of banded amphibolite of member OCra of the Rowe Schist....................................... A17 Photograph of amphibolite in member A of the Cobble Mountain Formation............ A25 24. Photograph of F x fold in amphibolite of the Rowe Schist ............................lenticular masses of green schist, gray schist, amphibolite, and serpentinized ultramafic rock. Intercalation...Cobble Mountain Formation. Plagioclase gneiss and amphibolite of the pre-Silurian Collinsville Formation core |
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