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The Geological Society of America publishes a wide range of peer-reviewed scholarly works in the form of journals, books, field guides, maps, and charts. The GSA Bookstore also carries educational materials, plus a variety of field tools.
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| Petrologic and Structural History of Tobago, West Indies: A Fragment of the Accreted, Mesozoic Oceanic Arc of the Southern Caribbean |
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| | by | Arthur W. Snoke
David W. Rowe
Geoffrey Wadge
J. Douglas Yule
| | Year Published: | 2001 | | Total Pages: | 54 | | ISBN: | 081372354X | | Product Code: | SPE354 | | Petrologic, geochemical, and isotopic data for the igneous and metamorphic rocks exposed on Tobago, West Indies, indicate an origin in an intraoceanic-arc system. However, these Mesozoic rocks now form part of an allochthonous terrane (Tobago terrane) within the South American–Caribbean plate-boundary zone. Tobago provides an exceptional opportunity to study compositional and structural variations of an ancient oceanic-arc sequence at contrasting structural levels. A greenschist- to amphibolite-facies metavolcanic and metasedimentary schist belt forms the footwall block, whereas an Albian ultramafic to tonalitic plutonic suite and coeval Tobago Volcanic Group form the hanging-wall block of the plastic-to-brittle Central Tobago normal-sense fault system. This book is a detailed petrologic and structural analysis of the Mesozoic oceanic-arc crust exposed on Tobago. Geologic maps, cross sections, structural stereograms, detailed field and petrographic descriptions, and numerous photographs provide an extensive data base for comparison with other oceanic-arc rocks exposed throughout the Caribbean region as well as in other orogens. |
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