Author : Emanuele Bozzo
Publisher : Terra Antartica Publication
Page : 120 pages
File Size : 18,79 MB
Release : 2007
Category : Science
ISBN : 9788888395050
Author : J.L. Smellie
Publisher : Geological Society of London
Page : 802 pages
File Size : 29,80 MB
Release : 2021-06-09
Category : Science
ISBN : 178620536X
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 :
Publisher :
Page : 312 pages
File Size : 47,88 MB
Release : 2005
Category : Antarctica
ISBN :
Author : A.P. Martin
Publisher : Geological Society of London
Page : 362 pages
File Size : 18,84 MB
Release : 2023-02-14
Category : Science
ISBN : 1786204673
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.
Author : S. Sensarma
Publisher : Geological Society of London
Page : 283 pages
File Size : 10,90 MB
Release : 2018-02-19
Category : Science
ISBN : 1786203251
Gondwana, comprising more than 64% of the present day continental mass, is home to 33% of large igneous provinces (LIPs) and key to understanding the lithosphere–atmosphere system and related tectonics that influenced global climate and sediment production on Earth. Gondwana has many of the largest LIPs, with areas of 200 000 to 2 000 000 km2. Several Gondwana LIPs erupted near active continental margins as well as within continents. The rifting of continents continued even after LIP emplacement or was aborted by a coeval compression and did not open into an ocean. Important contemporary frontiers include understanding significant amounts of synchronous silicic volcanic rocks in mafic LIPs, bringing better stratigraphic constraints supported by precise age dating and volume estimation of LIPs, the possible link between LIP emplacement and biotic crisis, refinement of the existing petrogenetic models and assessing large eruptions and associated societal risk. This volume covers topics on magma emplacements, petrology and geochemistry, source characteristics, flood basalt–carbonatite linkage, tectonics and geochronology of LIPs distributed in Gondwana continents.
Author :
Publisher :
Page : 632 pages
File Size : 41,27 MB
Release : 1963
Category : Cosmic physics
ISBN :
Author : Mort D. Turner
Publisher :
Page : pages
File Size : 43,9 MB
Release : 1983
Category : Geology
ISBN : 9780875901848
Author : John Turner
Publisher :
Page : 526 pages
File Size : 29,37 MB
Release : 2009
Category : Antarctica
ISBN : 9780948277221
Author : David J. Cantrill
Publisher : Cambridge University Press
Page : 489 pages
File Size : 36,98 MB
Release : 2012-11-22
Category : Science
ISBN : 113956028X
The fossil history of plant life in Antarctica is central to our understanding of the evolution of vegetation through geological time and also plays a key role in reconstructing past configurations of the continents and associated climatic conditions. This book provides the only detailed overview of the development of Antarctic vegetation from the Devonian period to the present day, presenting Earth scientists with valuable insights into the break up of the ancient supercontinent of Gondwana. Details of specific floras and ecosystems are provided within the context of changing geological, geographical and environmental conditions, alongside comparisons with contemporaneous and modern ecosystems. The authors demonstrate how palaeobotany contributes to our understanding of the paleoenvironmental changes in the southern hemisphere during this period of Earth history. The book is a complete and up-to-date reference for researchers and students in Antarctic paleobotany and terrestrial paleoecology.
Author : U.S. Geological Survey
Publisher :
Page : 396 pages
File Size : 36,88 MB
Release : 2012-11-01
Category : Science
ISBN : 9781782662174
