Download or read book Volcanism in Antarctica 200 Million Years of Subduction Rifting and Continental Break up written by J.L. Smellie and published by Geological Society of London. This book was released on 2021-06-09 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book The Geochemistry and Geophysics of the Antarctic Mantle written by A.P. Martin and published by Geological Society of London. This book was released on 2023-02-14 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Memoir is the first dedicated to the Antarctic mantle. It is a cross-disciplinary reference work combining geochemistry and geophysics to characterize Antarctic mantle properties. Through observations and modelling the mantle structures, compositions and dynamics are characterized at regional and continental scales by subject experts. The Memoir reviews all known occurrences of sub-continental mantle xenoliths in igneous rocks. These studies are presented by region as southern or northern Victoria Land, Marie Byrd Land, the Antarctic Peninsula, East Antarctica and the sub-Antarctic Islands. Sub-oceanic mantle in tectonically emplaced and abyssal settings is also considered where known. This is complemented by a continental-scale mantle xenolith overview, mantle characteristics from igneous rocks and a quantitative mantle fabric study. State-of-the-art, continental-scale geophysical overviews of the Antarctic mantle are presented by discipline as seismology, gravity and magnetics, magnetotellurics, rheology, glacial isostatic adjustment, mantle convection and palaeotopography. This Memoir will be the reference for all researchers interested in the Antarctic mantle and its role in dynamics that shape the Antarctic surface and ice sheets.

Download or read book Terrane Processes at the Margins of Gondwana written by Alan Vaughan and published by Geological Society of London. This book was released on 2005 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Australide orogen, the southern hemisphere Neoproterozoic to Mesozoic terrane accretionary orogen that forms the palaeo-Pacific margin of Gondwana, is one of the largest and longest-lived orogens on Earth. This book brings together a series of reviews and multidisciplinary research papers that comprehensively cover the Australides from the Tasman orogen of eastern Australia to the Neoproterozoic and Palaeozoic orogens of South America, taking in New Zealand and Antarctica along the way. It deals with the evolution of the southern Gondwana margin, as it grew during a series of terrane accretion episodes from the late Proterozoic through to final fragmentation in mid-Cretaceous times. Global perspectives are given by comparison with the Palaeozoic northern Gondwana margin and documentation of world-wide terrane accretion episodes in the Late Triassic-Early Jurassic and mid-Cretaceous. The Tasmanides of eastern Australia, and the terrane histories of New Zealand and southern South America are given comprehensive up-to-date reviews.

Download or read book The Vegetation of Antarctica Through Geological Time written by David J. Cantrill and published by Cambridge University Press. This book was released on 2012-11-22 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Looks at the fossil plant history of Antarctica and its relationship to the global record of environmental and climate change.

Download or read book Antarctic Journal of the United States written by and published by . This book was released on 1995 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The West Antarctic Ice Sheet written by and published by American Geophysical Union. This book was released on 1998 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Antarctica written by U.S. Geological Survey and published by National Academies Press. This book was released on 2008-05-18 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antarctica is the center from which all surrounding continental bodies separated millions of years ago. Antarctica: A Keystone in a Changing World, reinforces the importance of continual changes in the country's history and the impact of these changes on global systems. The book also places emphasis on deciphering the climate records in ice cores, geologic cores, rock outcrops and those inferred from climate models. New technologies for the coming decades of geoscience data collection are also highlighted. Antarctica: A Keystone in a Changing World is a collection of papers that were presented by keynote speakers at the 10th International Symposium on Antarctic Earth Sciences. It is of interest to policy makers, researchers and scientific institutions.

Download or read book Extending a Continent written by Uwe Ring and published by Geological Society of London. This book was released on 2009 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: In controlling continental break-up, extensional tectonics is one of the most fundamental processes that shape the face of our planet. Extension and break-up is key to understanding the evolution of continents, and the origin of sedimentary basins and their hydrocarbon potential, as well as the thermo-haline circulation in the oceans and, thus, global climate.

Download or read book Geology and Geophysics of Marie Byrd Land Northern Victoria Land and Oates Coast written by Bundesanstalt für Geowissenschaften und Rohstoffe and published by Hannover : Bundesanstalt für Geowissenschaften und Rohstoffe. This book was released on 2003 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seventh German Antarctic North Victoria Land Expedition (GANOVEX VII) took place in the austral summer of 1992/93. Geological and geophysical investigations were carried out on both sides of the Ross Sea: on King Edward VII Peninsula, northwestern Marie Byrd Land, in the east, and in northern Victoria Land and the adjacent Oates Coast in the west. Apatite fission-track data from the Alexandra and Rockefeller Mountains on Edward VII Peninsula indicate that the thermal history of the eastern rift flank of northern Victoria Land was different from that of the western rift shoulder. Tectonic and isostatic control factors on the landscape evolution of the coastal mountains of northern Victoria Land and their relationship to the Ross Sea rift are discussed in one paper of this volume. Regional metamorphic rocks appear on both sides of the Ross Sea. They were affected by the Ross orogeny and are related to the formation of the Gondwana supercontinent. The type and degree of metamorphism of the Early Palaeozoic regional metamorphic rocks of the Swanson Formation in westernmost Marie Byrd Land were studied and compared with metamorphic rocks in northern Victoria Land and on South Island, New Zealand. A paper deals with the origin of the amphibolites in the Priestley Formation of the Wilson Terrane of northern Victoria Land. The composition of the volcanic parent rocks of the Bowers Terrane metamorphic rocks in northern Victoria Land and their plate tectonic setting are discussed in another paper. The gravity measurements of previous GANOVEX expeditions were continued in Victoria Land between Brimstone Peak and Coulman Island, south of Lillie Marleen Hut, and in the Oates Coast region. Two-dimensional models are used to interpret the data obtained along two profiles from the polar plateau to the coast.

Download or read book Biogeology written by Bernard Michaux and published by CRC Press. This book was released on 2019-07-02 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed exposition gives background and context to how modern biogeography has got to where it is now. For biogeographers and other researchers interested in biodiversity and the evolution of life on islands, Biogeology: Evolution in a Changing Landscape provides an overview of a large swathe of the globe encompassing Wallacea and the western Pacific. The book contains the full text of the original article explored in each chapter, presented as it appeared on publication. Key features: Holistic treatment, collecting together a series of important biogeographical papers into a single volume Authored by an expert who has spent nearly three decades actively involved in biogeography Describes and interprets a region of exceptional biodiversity and extreme endemism The only book to provide an integrated treatment of Wallacea, Melanesia, New Zealand, the New Zealand Subantarctic Islands and Antarctica Offers a critique of fashionable neo-dispersalist arguments, showing how these still suffer from the same weaknesses of the original Darwinian formulation. The chapters also include analysis of many major theoretical and philosophical issues of modern biogeographic theory, so that those interested in a more philosophical approach will find the book stimulating and thought-provoking.

Download or read book Mineral Systems and the Crust upper Mantle of Southeast Australia written by Leonie Ellen Ann Jones and published by . This book was released on 1998 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mafic ultramafic Intrusions in Beishan and Eastern Tianshan at Southern CAOB Petrogenesis Mineralization and Tectonic Implication written by Ben-Xun Su and published by Springer. This book was released on 2014-07-08 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: The widespread mafic-ultramafic complexes in the Earth are well-known as their hosting Ni-Cu-PGE ore deposits, and their petrogenesis and mineralization have become hot issues in the geological studies. This thesis comprehensively investigated the petrology, mineralogy, geochemistry and geochronology of several mafic-ultramafic complexes in the Beishan Terrane, southern Central Asian Orogenic Belt aimed at systematically determining the mineralization and petrogenetic processes responsible for the formation of the complexes and placing constraints on the tectonic evolution of the Eastern Tianshan and Beishan, and the Early Permian mantle plume. The thesis identified mineralizing indicators of Ni-Cu sulfide deposits and defined the roles of partial melting, fractional crystallization, crustal assimilation and magma injection. The systematical isotopic compositions revealed the mantle source of the mafic-ultramafic complexes had undergone the subduction-related modifications both from the South Tianshan Ocean and subsequently the Junggar Ocean, and that the complexes were emplaced in the period of 269-285 Ma coeval with the 280 Ma mantle plume event in the Tarim Craton. The results of this thesis provide new insights about the tectonic setting, magma evolution, ore genesis, and exploration implications of the mafic-ultramafic complexes in Central Asian Orogenic Belt. Dr. Benxun Su works at the Institute of Geology and Geophysics, Chinese Academy of Sciences, China.

Download or read book Evolution and Dynamics of the Australian Plate written by R. R. Hillis and published by Geological Society of America. This book was released on 2003-01-01 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report for written by British Antarctic Survey and published by . This book was released on 1993 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Terra Antartica Reports written by and published by . This book was released on 1998 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plates Plumes and Paradigms written by Gillian R. Foulger and published by Geological Society of America. This book was released on 2005-01-01 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Terra Antartica written by and published by . This book was released on 1999 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: