LITHOSTRATIGRAPHY,GEOLOGY & GEOCHEMISTRY OF THE VOLCANIC ROCKS OF THE VAIGAT FORMATION ON DISKO... PDF Download
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Author:
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ISBN: 9788778714824
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN: 9788778714824
Category :
Languages : en
Pages :
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Author: Asger Ken Pedersen
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 244
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Book Description
The upper Cretaceous-Tertiary Nuussuaq Basin in West Greenland contains a many kilometres thick succession of siliciclastic sediments and overlying volcanic rocks. The first studies in the early 19th century were centred on the coal and fossils in the sediments and the minerals in the volcanic rocks, including famous occurrences of native iron. The present focus of interest includes modern stratigraphic and volcanological studies to decipher the basin evolution and support hydrocarbon and mineral exploration. This bulletin presents the lithostratigraphy, geology and geochemistry of teh Paleocene volcanic rocks of the Maligât Formation and its related intrusions on Disko and the Nuussuaq peninsula; it concludes with a detailed discussion of the effects of crustal contamination processes. The Maligât Formation is up to 2000 m thick and comprises four formally defined members and 15 chemically defined informal units. It is mainly composed of basalt lavas but also includes basaltic andesite, andesit and dacite flows and rhyolite tuffs. The silicic rocks and intrusions were produced by contaminiation in high-level magma chambers and commonly contain native iron. The comprehensive descriptions and analysis of each member and unit represent a synthesis of many years of work and are intended to serve as a guide for future studies, including exploration for mineral deposits associated with some units of the formation."--Back cover.
Author: Asger Ken Pedersen
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Drew S. Coleman
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
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Book Description
Author: J.L. Smellie
Publisher: Geological Society of London
ISBN: 178620536X
Category : Science
Languages : en
Pages : 802
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Book Description
This memoir is the first to review all of Antarctica’s volcanism between 200 million years ago and the Present. The region is still volcanically active. The volume is an amalgamation of in-depth syntheses, which are presented within distinctly different tectonic settings. Each is described in terms of (1) the volcanology and eruptive palaeoenvironments; (2) petrology and origin of magma; and (3) active volcanism, including tephrochronology. Important volcanic episodes include: astonishingly voluminous mafic and felsic volcanic deposits associated with the Jurassic break-up of Gondwana; the construction and progressive demise of a major Jurassic to Present continental arc, including back-arc alkaline basalts and volcanism in a young ensialic marginal basin; Miocene to Pleistocene mafic volcanism associated with post-subduction slab-window formation; numerous Neogene alkaline volcanoes, including the massive Erebus volcano and its persistent phonolitic lava lake, that are widely distributed within and adjacent to one of the world’s major zones of lithospheric extension (the West Antarctic Rift System); and very young ultrapotassic volcanism erupted subglacially and forming a world-wide type example (Gaussberg).
Author: Gianluca Groppelli
Publisher: Geological Society of America
ISBN: 0813724643
Category : Science
Languages : en
Pages : 303
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Book Description
Accompanying CD-ROM, entitled Supplementary materials to Stratigraphy and geology of volcanic areas, includes three geologic maps in Adobe Acrobat PDF files.
Author: E. A. Du Bray
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 68
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Book Description
Author: Mitchell Leverette
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 246
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Book Description
Author: W. Dan Hausel
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 76
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Book Description
Author: Feiko Kalsbeek
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 194
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