Early Middle Pleistocene Transitions: The Land-Ocean Evidence (Special Publication, No. 247)

Early Middle Pleistocene Transitions: The Land-Ocean Evidence (Special Publication, No. 247)

Publisher: Geological Society of London ISBN: 1862391815 edition 2005 PDF 336 pages 58 mb

The Early-Middle Pleistocene transition (around 1.2 to 0.5 Ma) marks a profound shift in Earth's climate state. Low-amplitude 41 ka climate cycles, dominating the earlier part of thePleistocene , gave way progressively to a 100 ka rhythm of increased amplitude that characterizes our present glacial-interglacial world. This volume assesses the biotic and physical response to this transition both on land and in the oceans: indeed it examines the very nature of Quaternary climate change. Milankovitch theory, palaeoceanography using isotopes and microfossils, marine organic geochemistry, tephrochronology, the record of loess and soil deposition, terrestrial vegetational change, and the migration and evolution of hominins as well as other large and small mammals, are all considered. These themes combine to explore the very origins of our present biota.

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Cretaceous-Tertiary High-Latitude Palaeoenvironments: James Ross Basin, Antarctica - Special Publication no. 258

Cretaceous-Tertiary High-Latitude Palaeoenvironments: James Ross Basin, Antarctica - Special Publication no. 258

Publisher: Geological Society of London ISBN: 1862391971 edition 2006 PDF 216 pages 76,9 mb

High-latitude settings are sensitive to climatically driven palaeoenvironmental change and the resultant biotic response. Climate change through the peak interval of Cretaceous warmth, Late Cretaceous cooling, onset and expansion of the Antarctic ice sheet, and subsequently the variability of Neogene glaciation, are all recorded within the sedimentary and volcanic successions exposed within the James Ross Basin, Antarctica. This site provides the longest onshore record of Cretaceous-Tertiary sedimentary and volcanic rocks in Antarctica and is a key reference section for Cretaceous-Tertiary global change. The sedimentary succession is richly fossiliferous, yielding diverse invertebrate, vertebrate and plant fossil assemblages, allowing the reconstruction of both terrestrial and marine systems. The papers within this volume provide an overview of recent advances in the understanding of palaeoenvironmental change spanning the mid-Cretaceous to the Neogene of the James Ross Basin and related biotic change, and will be of interest to many working on Cretaceous and Tertiary palaeoenvironmental change.

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The Gregory Rift Valley and Neogene-Recent Volcanoes of Northern Tanzania - Memoir no 33

The Gregory Rift Valley and Neogene-Recent Volcanoes of Northern Tanzania - Memoir no 33

Publisher: Geological Society of London ISBN: 1862392676 edition 2009 PDF 112 pages 3,8 mb

The structure and volcanic activity of the northern Tanzania sector of the Gregory Rift Valley have hitherto been less well described than those in Ethiopia and Kenya. This book focuses on northern Tanzania where, although the volcanic area is smaller than those to the north, there are major features such as Kilimanjaro, the highest mountain on the African continent; Ngorongoro, one of the largest calderas on Earth; and Oldoinyo Lengai, the world's only active carbonatite volcano. Following an account of the discovery and early exploration of the rift valley, there are descriptions of the individual volcanoes. These are set within the context of the regional geology and geophysics of the rift valley, and in relation to the structural evolution of the rift and its associated sedimentary basins which include Olduvai, an important site in the history of human evolution The volume concludes with a discussion of the volcanism as related to the plume-related African Superswell.

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K. Werner Barthel, N.H.M. Swimburne, S.C. Morris

K. Werner Barthel, N.H.M. Swimburne, S.C. MorrisSolnhofen: A Study in Mesozoic PalaeontologyCambridge

University Press 1994 ISBN: 0521458307 246 pages PDF 73 Mb

The celebrated Solnhofen limestone is among the most important fossil deposits because of its astonishing diversity of organisms, many exquisitely preserved. This book illustrates many of the marine and terrestrial creatures and plants, buried 150 million years ago in soft lagoonal muds, to provide a unique glimpse into the true diversity of Jurassic life. Highlights include Archaeopteryx. This is an authoritative account of the geological history, palaeoecology, palaeoenvironment and fossil taxonomy of this classic location. It will be of great interest to palaeontologists and evolutionary biologists, as well as to amateur collectors, natural historians and anyone with an interest in the history of life. This book is a revised and updated translation of Werner Barthel's classic work.

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P. Van Rensbergen, R. R. Hillis, A. J. Maltman, C. K. Morley, "Subsurface Sediment Mobilization"

P. Van Rensbergen, R. R. Hillis, A. J. Maltman, C. K. Morley, "Subsurface Sediment Mobilization"

Geological Society of London; illustrated edition (November 1, 2003) English 1862391416 528 pages PDF 58.87 MB

Sedimentary facies in the subsurface are usually interpreted from a depositional/stratigraphical perspective: the depositional layering is generally considered to remain undisturbed, except in a few settings. But, there is growing evidence that subsurface sediment mobilization (SSM) is more widespread than previously thought, as new observations arise from the ever-increasing resolution of subsurface data. Many examples are from hydrocarbon provinces but studies elsewhere, for example in preparation for the underground storage of hazardous waste, have yielded unexpected examples. Although until now the different aspects of SSM, including soft sediment deformations, sand injections, shale diapirs, mud volcanoes, etc, have been separated, the new discoveries emphasize their inter-connection, regardless of scale, depth, location, grain size or trigger mechanism. This volume integrates the different aspects of sediment mobilization in the subsurface and their structural consequences, allowing a more general and a more coherent view of the subject.

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