 | | Report (chapter) | | Metamorphic evolution of Proterozoic rocks in New Mexico Jeffrey A. Grambling, Michael L. Williams, Christopher...of northern New Mexico is known for the coexistence of Ky, And and Sil across a minimum area of 75 000...FIG. 1. Preliminary Proterozoic terrane map of New Mexico. Rocks of uncertain affinity are shown with queries...S r ages from schistose rocks across northern New Mexico fall near 1400 Ma; and K - A r and R b - S r...Metamorphic evolution of Proterozoic rocks in New Mexico that south-verging mylonites post-date northverging |  | | Book (edition) | | org/details/mineralsofnewmexOOnort MINERALS OF NEW MEXICO Before all things, there which has them ...that 1825 mining opened the West- . —Charles W. Henderson, 1933 MINERALS of New Mexico STUART A...Mew Mexico PROPERTY OF HBSIER JR. HIGH SCH LIBRARY Revised Edition UNIVERSITY OF NEW MEXICO PRESS...ALBUQUERQUE © 1944. 1959. UNIVERSITY OFNEW MEXICO PRESS ALL RIGHTS RESERVED REVISED EDITION LIBRARY...BOUND AT THE UNIVERSITY OF NEW MEXICO PRINTING PLANT ALBUQUERQUE, NEW MEXICO, U. S. A. FOR IVAH 1 |  | | Journal (article/letter/editorial) | | within coarsegrained sillimanite that has replaced andalusite porphyroblasts during prograde metamorphism....postdates the pseudomorphs of sillimanite after andalusite. The textural evidence for a genetic relationship...55quartz + 2 H 2 0 Staurolite inclusions within andalusite did not break down to form hercynite, indicating...ilmenite and graphite; metastable relicts of andalusite are also common. Staurolite is generally absent...locally where it is completely armoured within andalusite relicts. The "second sillimanite" assemblage |  | | Journal (article/letter/editorial) | | Southern California, Los Angeles, CA 90089-0740, USA (Received October 7, 1992; revised and accepted January...from a two-dimensional cross-section through the area. These possibilities highlight the limitations of...appears to have undergone neocrystallization to new (locally greenish brown) biotite plus epidote and...evident stability of hornblende and the production of new biotite during the deformation. However, the orientation...former regional muscovite-chlorite phyllites. Andalusite appears closer to the contact, followed by sillimanite |  | | Report (chapter) | | service click here to receive free e-mail alerts when new articles cite this article Permission request click...inclusion trails in a schist from the Lukmanier area, Switzerland. Folding in the matrix has intensified...inclusions) in a phyUitic schist from the Lukmanier area, Switzerland, showing markedly curved inclusion...Cordierite porphyroblast in a schist from the Bosost area, central Pyrenees, with internal inclusion trails...not develop in the area occupied by cordierite, so that biotite grew in this area with differently oriented |  | Beurlen, H., Thomas, R., Melgarejo, J. C., Da Silva, J. M. R., Rhede, D., Soares, D. R., Da Silva, M. R. R. (2013) Chrysoberyl-sillimanite association from the Roncadeira pegmatite, Borborema Province, Brazil: implications for gemstone exploration. Journal of GEOsciences, 58 (2) 79-90 | Journal (article/letter/editorial) | | 3.5 to 5 kbar) implies either an existence of a new generation of syn-metamorphic REL-pegmatites in the...late-tectonic recurrent increase in P–T conditions in the area. Another, less probable, alternative is a metastable...and around chrysoberyl (Cbl). The almost opaque area between quartz and chrysoberyl consists also of...Moore and Ito (1973) from Black Hills, South Dakota, USA, by Gonzales del Tánago (1991) from Sierra Al- barana...chrysoberyl is rich in inclusions of relict (corroded) and new-formed sillimanite crystals forming a dense network |  | | Report (issue) | | Department of Geology University of New Mexico Albuquerque, New Mexico 87131 Barbara J. Tewksbury Department...Department of Geology Hamilton College Clinton, New York 13323 ~ ‘PAPER 235 1989 © 1989 The Geological...CIP Cover Photo: Proterozoic rocks of northern New Mexico are separated into two tectonometamorphic plates...schematic structural cross-section. (a) Kyanite-andalusite-sillimanite schist, with biotite, muscovite,...shear zone. Minerals record minimal deformation; andalusite (gray) and sillimanite (red needles) are intergrown |  | | Journal (article/letter/editorial) | | characterized by: (1) muscovite–quartz schist; (2) andalusite– cordierite–K-feldspar granofels with small melt...and nebulitic migmatites throughout most of the area formed as a result of in-situ melting. A biotit...Arunta Block (Noakes, 1953; Fig. 1 )—an extensive area of complexly deformed, lowto high-grade Proterozoic...FI EL D E T A L . Fig. 1. Map of the Mt Stafford area showing bedding trends and metamorphic zones. and...1860–1580 Ma (Collins & Shaw, 1995). The Mt Stafford area contains rocks from only the older metasedimentary |  | | Journal (article/letter/editorial) | | rocks in the Cimarron Mountains, northern New Mexico, USA J . A . G R A M B L I N G ' A N D R . D. D...Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, USA 'Department of Geology, University...University of Georgia, Athens, GA 30602, USA ABSTRACT Portions of three Proterozoic tectonostratigraphic sequences...sequences are exposed in the Cimarron Mountains of New Mexico. The Cimarron River tectonic unit has affinities...younger events have been recognized in Colorado and New Mexico and are identified by: (1) deformational fabrics |  | | Journal (article/letter/editorial) | | Mineralogist, Volume 87, pages 433–444, 2002 Andalusite-sillimanite replacement (Mazarrón, SE Spain):...numerous xenocrysts and xenoliths with abundant andalusite that displays variable degrees of transformation...coarse sillimanite. At the onset of replacement, andalusite dissolves along grain boundaries and (110) cleavage...replacement of andalusite is observed. The mutual crystallographic orientation of andalusite and sillimanite...proposed (discussion in Pattison 1992). In nature, andalusite together with fibrolite or coarse-grained sillimanite |  | | Journal (article/letter/editorial) | | syntectonic intrusion. The deformation of cordierite, andalusite and sillimanite in the contact aureole, as well...intrusive body is indicated by the occurrence of andalusite and cordierite in the contact aureole and by...collision between Gondwana and Armorica. Keywords: andalusite, cation leaching, contact metamorphism, cordierite...tectonic structures and their chronology between the area north of Monte’e Senes and those in the Monte’e...RELATIONSHIPS The Monte’e Senes complex covers an area of about 100 km2 and provides a vertical section |  | | Journal (article/letter/editorial) | | Crd–Kfs–Bt–Qtz. At slightly higher temperature, andalusite in leucosome formed via the reaction Kfs+Qtz+Bt+H...presence of 2 boron. Sillimanite coaxially replaces andalusite in the high-grade portion of Zone 2. In Zone...L . Block (Noakes, 1953; Fig. 1), an extensive area of complexly deformed, low- to high-grade Proterozoic...al., 1984; Stewart et al., 1984). The Mt Stafford area is dominated by a metasedimentary sequence called...pre-1820 Ma D1–M1 event (Collins & Williams, 1995). The area preserves only limited effects of a D2–M2 event |  | | Journal (article/letter/editorial) | | An early paragenesis containing chiastolitic andalusite, cordierite, biotite and quartz¡garnet crystallized...similar symplectites are also found replacing andalusite or sillimanite in pelitic xenoliths in magmatic...sedimentary bedding. Garnet and chiastolitic andalusite porphyroblasts are frequently present and display...chiastolitic andalusite and, in some samples (e.g. X578), primary layering is defined by andalusite-rich layers...alternating with layers rich in matrix minerals. Andalusite forms euhedral to subhedral chiastolite porphyroblasts |  | | Journal (article/letter/editorial) | | An early paragenesis containing chiastolitic andalusite, cordierite, biotite and quartz¡garnet crystallized...similar symplectites are also found replacing andalusite or sillimanite in pelitic xenoliths in magmatic...sedimentary bedding. Garnet and chiastolitic andalusite porphyroblasts are frequently present and display...chiastolitic andalusite and, in some samples (e.g. X578), primary layering is defined by andalusite-rich layers...alternating with layers rich in matrix minerals. Andalusite forms euhedral to subhedral chiastolite porphyroblasts |  | | Report (chapter) | | fine-grained clusters of sillimanite stemming from andalusite replacement. Associated features are phase mixing...was collected south of the Tummeralik area, SE of Nuuk, an area mapped during the 2006 GEUS (Geological...Greenland) mapping campaign, (Fig. 1). The Tummeralik area consists dominantly of tonalitic to granodioritic...significant part of the supracrustal units of the area (UTM zone 22 (E 551448, N 7117040)). The unit is...metamorphic evolution of the adjacent Tummeralik area has been defined as a clockwise Barrovian Downloaded |  | | Journal (article/letter/editorial) | | au) 2 Department of Applied Geology, University of New South Wales, NSW 2052, Australia ABSTRACT The Albany–Fraser...Australo-Antarctic cratonic assembly during the Mesoproterozoic. New petrologic and thermobarometric data from the Coramup...metamorphism and D2 deformation. In a companion paper, new structural and U–Pb SHRIMP zircon data are presented...Coramup Gneiss (i.e. the Butty Head– Butty Harbour area; Fig. 3b,c), and comprise NE-trending, subvertical...shear zone Trend of dominant gneissosity Inland area (no outcrop) Beach (sand and boulders) Granitic |  | | Journal (article/letter/editorial) | | cordierite-andalusite-K-feldspar assemblages and cordierite-bearing leucosomes with biotite-andalusite selvages...independent higher-P thermal event. Coexistence of andalusite with sillimanite in these rocks appears to re¯ect...which locally contain coarse porphyroblasts of andalusite and/or cordierite (Fig. 3a). The gneissic layering...Metamorphics (Shaw et al., 1984) crop out in a c. 334 km area, c. 20 km 742 I . SC R I M G E O U R E T A L...a medium to ®ne-grained assemblage comprising andalusite, cordierite, biotite, quartz, K-feldspar and |  | Miyake, Akira, Hirukawa, Takanobu, Sato, Maki, Taguchi, Tomoki, Suzuki, Kazuhiro, Nakai, Yutaka (2016) Large thermal aureole around the Inagawa Granodiorite in the southeastern area of Asuke, Aichi Prefecture. The Journal of the Geological Society of Japan, 122 (5) 173-191 doi:10.5575/geosoc.2016.0008 | Journal (article/letter/editorial) | | around the Inagawa Granodiorite in the southeastern area of Asuke, Aichi Prefecture Abstract 三宅 明＊ 蛭川孝信＊＊†...and consists of four distinct intrusive units. A new CHIME monazite age of 83.3 ± 1.3 Ma for the third...the occurrence of prismatic sillimanite after andalusite, and the spatial distribution of migmatitic rocks...thermal aureole, metamorphic zonation, migmatite, andalusite-sillimanite transition, CHIME monazite age Institute...belt in the Mikawa area showing the locations of the study area and the Dando-san area (simplified after |  | | Report (volume) | | C. Lasaga Geological Laboratory Yale University New Haven, Connecticut 06520 Peter I. Nabelek Dept. of...As in any field of endeavor, we are provided with new questions, thereby dictating future directions of...anatectic zone Stability of kyanite + biotite in andalusite-sillimanite sequences ANATEXIS Significance...Methodology Experimental studies of selected reactions Andalusite =sillimanite Calcite + quartz -wollastonite +...+ quartz =>diopside + CO2 Muscovite + quartz <andalusite + K-feldspar + H2O Brucite =periclase + H2O Critique |  | | Book | | 955 Massachusetts Avenue, Cambridge, Mass. 02139, USA ' Allen & Unwin (Australia) Ltd, 8 Napier Street...North Sydney, NSW 2060, Australia Allen & Unwin (New Zealand) Ltd in association with the Port Nicholson...Compusales Building, 75 Ghuznee Street, Wellington I, New Zealand First published in 1990 British Library...University Press. Preface This second volume in the new series produced by the Mineralogical Society is concerned...interaction in the north-west Adirondack Mountains, New York State Ian Cartwright & John W. Valley 8. l Introduction |
|
