2 edition of comparative atlas of textures of Archean and younger volcanic rocks found in the catalog.
comparative atlas of textures of Archean and younger volcanic rocks
W. W. Moorhouse
|Statement||[by] W. W. Moorhouse. Edited by J. J. Fawcett.|
|Series||Geological Association of Canada. Special paper, no. 8, Geological Association of Canada special paper ;, 8.|
|Contributions||Fawcett, James Jeffrey, 1936- ed.|
|LC Classifications||QE440 .M66 1970|
|The Physical Object|
|Number of Pages||47|
|LC Control Number||72192351|
The southern area, the fold-and-thrust belt, comprises a complex assemblage including (1) accreted Paleoproterozoic volcanic and plutonic rocks and volcanic rocks of the Wisconsin magmatic terranes; (2) accreted Archean miniplate terranes; (3) older Paleoproterozoic passive-margin sedimentary rocks and volcanic rocks produced during initial. Textures of Basalts and Gabbros. Introduction. Basalts and gabbros are volcanic rocks that are common to the Earth, Moon, Mars, many large asteroids, and probably to Mercury and Venus. From the Apollo Missions and meteorites that we have received from the Moon, Mars, and asteroids, we have learned that the general characteristics of all.
The interaction of sub-seafloor volcanic glass with circulating fluids produces secondary minerals as well as alteration textures that penetrate into the glass (e.g., Thorseth et al., ; Fisk et al., a; Alt and Mata, ; Furnes et al., a; Josef, ).These alteration textures are found in basalts from the flanks of ocean rifts, seamounts, back-arc basins, and marginal by: Open Library is an open, editable library catalog, building towards a web page for every book ever published.
Glomerophyric Texture Glomeroporphyritic or Glomerophyric is a term used to describe a porpyritic texture in which phenocrysts are clustered into aggregates called glomerocrysts or crystal clots. Glomeroporphyritic textures are common and often included plagioclase and pyroxenes in basic rocks. Start studying Geology Ch 9. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. two lower units dominated by volcanic rock, some of which are ultramafic; and an upper unit consists mostly of sedimentary rocks most common Archean rocks.
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Comparative atlas of textures of Archean and younger volcanic rocks. Toronto, Business and Economic Service Ltd., (OCoLC) Document Type: Book: All Authors / Contributors: W W Moorhouse; James Jeffrey Fawcett. / A COMPARATIVE ATLAS OF TEXTURES OF ARCHEAN AND YOUNGER VOLCANIC ROCKS, Geological Association of Canada, SP No.
8, Toronto,pb, introduction, table of contents, 20 plates, - 3 - $ 16 Morse, S. / BASALTS AND PHASE DIAGRAMS: An Introduction to the Quantitative Use of Phase Diagrams in Igneous Petrology, New York,cl, - 3 - $ Atlas of igneous rocks and their textures A companion volume to the Atlas of Rock-forming Minerals in Thin Section, this full-colour handbook is designed to be used as a laboratory manual both by elementary students of earth sciences undertaking a study of igneous rocks in thin section under the microscope, and by more advanced students and teachers as a reference /5(8).
Atlas of alteration textures in volcanic glass from the ocean basins seen in younger volcanic glass (Fig. 1H). These new findings indicate no morphological similarity between the Archean. Rocks with similar mineral composition at the top of volcanic flows recognized in drill core descriptions display breccia-like textures similar to those observed in hyaloclastites (Fig.
3d). Precambrian Research, 17 () 1 Elsevier Scientific Publishing Company, Amsterdam -- Printed in The Netherlands COMPARATIVE SEDIMENTOLOGY OF THE PRINCIPAL VOLCANIC SEQUENCES OF ARCHEAN GREENSTONE BELTS IN SOUTH AFRICA, WESTERN AUSTRALIA AND CANADA: IMPLICATIONS FOR CRUSTAL EVOLUTION Cited by: Atlas of igneous rocks and their textures W.S.
MacKenzie, C.H. Donaldson and C. Guilford Longman Scientific 8c Technical Copublished in the United States with John Wiley & Sons, Inc., New York. Contents Preface A cknowledgements Part 1 The textures of igneous rocks (Numbers refer to photographs - not to pages) Introduction Crystallinity the minralogy and texture of these rocks revealed that they are highly altered and weathered fine-grained basalts (Fig 3a).
The Second Outcropping Volcanic Rock Layer (Episode 2). Under microscope the samples indicate that these volcanic rocks are composed essentially of plagioclase laths (%), olivine (%), pyroxene crystals (%),File Size: 1MB. The most common texture for common volcanic rocks (i.e. basalts).
Porphyritic-phaneritic. Phenocrysts surrounded by phaneritic groundmass. Indicates two stages of slow crystallization, i.e. intrusion at two different levels. Based on Crystal Shape (used almost exclusively for holocrystalline, phaneritic rocks) Size: 8KB.
Magma can cool to form an igneous rock either on the surface of the Earth - in which case it produces a volcanic or extrusive igneous rock, or beneath the surface of the Earth, - in which case it produces a plutonic or intrusive igneous rock.
Types of magma are determined by chemical composition of the Size: KB. IGNEOUS ROCK TEXTURES - PRINCIPLEThe fundamental principle behind igneous rock textures is that grain size is controlled by cooling rate.
Thus, rapid cooling at the Earth’s surface of extrusive molten material, or lava, results in the growth of smaller crystals, or prevents crystal growth altogether. Walter Wilson Moorhouse has written: 'A comparative atlas of textures of Archean and younger volcanic rocks' 'The study of rocks in thin section' Magmatic fluids coming from the intrusive rock may.
ARCHEAN ROCK ASSOCIATIONS: Granulites and Greenstones are two very important rock assemblages characteristic of the Archean Eon. Granulites are high grade metamorphic and igneous rocks that are thought to be derived from the plutons associated with volcanic arcs.
Granites and gneisses are the dominant rock types within granulites. The retention of petrography as an essential working tool has been very clearly emphasized by Moorhouse () in the introduction to A Comparative Atlas of Textures of Archaean and Younger Volcanic Rocks: "Undeformed Archean volcanic rocks frequently preserve their textures with remarkable fidelity and can therefore provide approximate clues to their original.
Volcanic Textures: A Guide to the Interpretation of Textures in Volcanic Rocks Jocelyn McPhie, Mark Doyle, Rodney Leslie Allen, Rodney Allen Centre for Ore Deposit and Exploration Studies, University of Tasmania, - Petrofabric analysis - pages.
A Comparative Atlas of Textures of Archean and Younger Volcanic Rocks. Geological Association of Canada Special Paper 8; June Geological Association of Canada. Hard Cover. Book- VG, black titles on front board and spine, brown boards. 9x6. Some b/w illus. Private library plate.
Cretaceous Rocks and Their Foraminifera in the. Atlas of igneous rocks and their textures A companion volume to the Atlas of Rock-forming Minerals in Thin Section, this full-colour handbook is designed to be used as a laboratory manual both by elementary students of earth sciences undertaking a study of igneous rocks in thin section under the microscope, and by more advanced students and teachers as a reference Author: W S Mackenzie.
Carbonate-rich alteration may be regionally extensive and is not always related to mineralization. chlorite, muscovite, quartz, actinolite, pyrite, pyrrhotite chloritic Wallrock alteration in and around veins and shear zones, particularly in mafic volcanic and volcaniclastic sedimentary rocks.
biotite, chlorite, quartz, pyrite, pyrrhotite. There is a wide variety of volcanic rocks with different textures and compositions.
Compositional types include basalt, andesite, dacite, rhyolite, trachyte, and phonolite. Library of Congress Cataloging in Publication Data Geology and geochronology of granitoid and metamorphic rocks of late Archean age in northwestern Wisconsin.
(Contributions to the geology of the Lake Superior Region)(Geological Survey Professional Paper; C) iii, 17 by: 7. Wording: Natural sciences and mathematics > Earth sciences & geology > Lithology; Petrography > Volcanic rocks Dewmoji. Atlas of igneous rocks and their textures A companion volume to the Atlas of Rock-forming Minerals in Thin Section, this full-colour handbook is designed to be used as a laboratory manual both by elementary students of earth sciences undertaking a study of igneous rocks in thin section under the microscope, and by more advanced students and teachers as /5(5).MOORHOUSE,WW () The Study of Rocks in Thin Section.
Harper & Row Publishers, New York, pp. MOORHOUSE,WW () A Comparative Atlas of Textures of Archean and Younger Volcanic Rocks. GAC 8, 40pp., including 19 plates. Petrography, photomicrographs.