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Books > Earth & environment > Earth sciences > Geology & the lithosphere > Geological surface processes (geomorphology) > General
This book focuses on the links between deep earth (mantle) and shallow processes in areas of active tectonics in the Arabian Plate and Surrounding Areas. It also provides key information for energy resources in these areas. The book is a compilation of selected papers from the Task Force of the International Lithosphere Program (ILP). It comprises a set of research studies from the Middle East, North Africa and the Mediterranean domain focusing on (1) the architecture, geodynamic evolution and modelling of the Red Sea rift system and its surroundings, and tectonics and sedimentation in the Gulf of Corinth, (2) the crustal architecture and georesources of the North Algerian Offshore, (3) Reservoirs, aquifers and fluid transfers in Saudi Basins, Petroleum systems and salt tectonics in Yemen and (4) Cretaceous-Eocene foreland inversions in Saudi Arabia.
This informative book takes readers on an enjoyable journey through the La Garrotxa volcanoes. In addition to a general description of the main geological and volcano logical values of the region, it also provides a detailed account of the history of the region, its biological diversity, and its cultural heritage including architecture, folklore and gastronomy. La Garrotxa Volcanic Zone was declared a Natural Park in 1982 to protect the numerous sites of special interest that are found in this region. The Natural Park has been pioneering in many initiatives aimed at preserving the landscape and natural values and promoting awareness of the area within the community. An important part of this book is dedicated to the insights into the educational programs and outreach developed to disseminate the main values of this region. It shows how sustainable tourism has been implemented and the management plan that has been designed to preserve such important natural and cultural values. Including local experts' views on the topics covered, this book will appeal to a general audience interested not only in visiting the area but also in gaining insights into an example of geoheritage and geoconservation that has successfully integrated of education, tourism, planning and environmental management.
This book focuses on the metallogeny and main tectonic events of the North China Craton from early Precambrian to Phanerozoic. It covers the Archean crustal growth, Paleoproterozoic rifting-subduction-collision processes, Great Oxidation Event, Meso-Neoproterozoic multiple rifting, Phanerozoic reworking of the North China Craton, as well as metallogeny related to above different processes. The North China Craton is one of the oldest cratons in the world. It has experienced a complex geological evolution since the early Precambrian, and carries important records of secular changes in tectonics and metallogeny. It provides a systematic review and new results on the growth and evolution of the North China Craton and metallogeny. It will be of broad interest to the earth scientists working in the fields of economic geology, geochemistry, and tectonics of the North China Craton and eastern Asian.
This book presents a comprehensive overview of the nature of manifestation and general aspects of thermal springs of Odisha. A detailed description of geological formations and the relationship between tectonic settings with thermal spring emanation is given for better understanding of the geothermal system. Physico-chemical characteristics of water and gas have been studied and interpreted to ascertain the nature and source of geothermal fluid and to generate a conceptual model on the origin. The book can serve as a valuable reference for earth scientists, planners and researchers in the field of geothermal energy. As the thermal springs are spectacular sites for tourists this illustrated book can also help tourists, tourist guides and tourism departments.
This book sheds new light on improved methods for the study of the initiation and run-out of earthquake-induced landslides. It includes an initiation study method that considers tension-shear failure mechanism; an improved, rigorous, dynamic sliding-block method based on dynamic critical acceleration; and a run-out analysis of earthquake-induced landslides that takes account of the trampoline effect, all of which add to the accuracy and accessibility of landslide study. The book includes abundant illustrations, figures and tables, making it a valuable resource for those looking for practical landslide research tools.
This book portrays the Himalayan-born River Saraswati, a legendary river that was the lifeline of a progressive and vibrant society for more than three thousand years. Written in simple language and richly illustrated, it highlights the events that resulted in the robbing of the Saraswati of its water and the end of a wonderful culture. The author weaves a geological narrative out of a mass of data generated by explorers, archaeologists, sedimentologists, geohydrologist, seismologists and remote-sensing specialists. The story explains how a great Himalayan river disappeared and how the Harappan Civilization vanished from the banks of the river Saraswati more than three and half thousand years ago in the wake of tectonic upheavals in the foothills of the Himalaya at a time when the rainfall had drastically declined. And it reveals that nowadays the Saraswati is an extraordinary wide water-less channel coursing through the vast but dry floodplain in western India.
Of huge relevance in a number of fields, this is a survey of the different processes of soil clay mineral formation and the consequences of these processes concerning the soil ecosystem, especially plant and mineral. Two independent systems form soil materials. The first is the interaction of rocks and water, unstable minerals adjusting to surface conditions. The second is the interaction of the biosphere with clays in the upper parts of alteration profiles.
This book on multiscale seismic tomography, written by one of the leaders in the field, is suitable for undergraduate and graduate students, researchers, and professionals in Earth and planetary sciences who need to broaden their horizons about seismotectonics, volcanism, and interior structure and dynamics of the Earth and Moon. It describes the state-of-the-art in seismic tomography, with emphasis on the new findings obtained by applying tomographic methods in local, regional, and global scales for understanding the generating mechanism of large and great earthquakes such as the 2011 Tohoku-oki earthquake (Mw 9.0), crustal and upper mantle structure, origin of active arc volcanoes and intraplate volcanoes including hotspots, heterogeneous structure of subduction zones, fate of subducting slabs, origin of mantle plumes, mantle convection, and deep Earth dynamics. The first lunar tomography and its implications for the mechanism of deep moonquakes and lunar evolution are also introduced.
Since 1980, our understanding of the factors and processes governing the distribution of soils on the Earth’s surface has increased dramatically, as have the techniques for studying soil patterns. The approach used in this book relies on the National Resources Conservation Service databases to delineate the distribution of each of the eight diagnostic epipedons and 19 subsurface horizons, to identify the taxonomic level at which each of these horizons is used, to develop an understanding of the role of the factors and processes in their formation and to summarize our latest understanding of their genesis. A chapter is devoted to each diagnostic horizon (or combined horizons). This book is intended to serve as a textbook in soil geography, a reference book for geographers, ecologists and geologists and a tool for soil instructors, landlookers, mappers, classifiers and information technologists.
Mapping Geomorphological Environments is a highly descriptive textbook providing an excellent introduction to the latest methodologies for mapping geomorphological formations in a variety of different environments. Its holistic approach seeks to provide a meaningful linkage between state of the art techniques for geomorphological mapping, including the latest innovations in geospatial applications, and advances in the understanding of the formation of geomorphological phenomena in a variety of settings and environments. The book includes: - An introduction to the processes which form geomorphological formations and how to map them. - Case studies from a variety of environments with many examples of geomorphological maps. - In-depth descriptions of the latest tools and methodologies such as field sampling, GPS usage, 3-4D mapping, GIS analysis, digital image analysis, etc. - A list of the geomorphological characteristics per environment (e.g. coastal, fluvial, etc.) in the format of a geomorphological encyclopaedia, with pictures, maps and symbols. It covers the entire workflow ranging from data collection, analysis, interpretation, and mapping. Acknowledgements All authors would like to acknowledge the contribution of Dr. John W.M. Peterson, School of Computing Sciences, University of East Anglia, Norwich, UK, for corrections and improvement to the English text.. Universita Telematica Guglielmo Marconi (UTGM) and ENEA acknowledge the collaboration of CUTGANA (Centro Universitario per la Tutela e la Gestione degli Ambienti Naturali e degli Agroecosistemi), Universita di Catania, for the paper on "The Cyclops Islands". IRMCo acknowledges the use of the Integrated Land and Water Information System (ILWIS), developed by ITC, the Netherlands, for the management and assessment of geographic information in a GIS environment. ILWIS functionality was employed for the paper on "The natural heritage of the Island of Gozo" and the paper on "The geomorphological cave features of Ghar il-Friefet". IPB (Polytechnic Institute of Braganca) wishes to acknowledges all those colleagues, most of them also members of CIMO (Centre for Mountain Research), that contributed to the recently issued Management Plan of Montesinho Natural Park (PNM). Their hidden contribution to the articles concerning PNM is much acknowledged. A word in recognition of his endless and contagious enthusiasm towards Montesinho and to the Mountain domain, spread among us all in the IPB, is due to Professor Dionisio Goncalves, the first Director, Coordinator and President of PNM, CIMO and IPB, respectively. The authors of the photos inserted in the articles concerning Montesinho are also much acknowledged for their contribution.
The Earth's rocky mantle convects to lose heat, which comes from the liquid iron core below. The mantle's interfaces - the core-mantle boundary, and the lithosphere - may hold the key to understanding mantle motion because of the seismic anisotropy present in these parts of the Earth. In this thesis, Andy Nowacki presents a precise but comprehensive review of the current state of the art in studying flow with anisotropy, mineral physics and geodynamics. New measurements of shear wave anisotropy in the lowermost mantle and at mid-ocean ridges are used to constrain mechanisms of creep and melt extraction in the mantle. A model of global flow is used to predict anisotropy in the deep Earth, and novel methods to forward model shear wave splitting are described. Future studies of mantle flow must incorporate the understanding gained in this thesis. The thesis contains a substantive introduction to the structure of the Earth, seismic anisotropy in general and in the core-mantle boundary region, and mid-ocean ridge processes. It also describes novel methods for forward modelling and interpreting shear wave splitting data. Three chapters present timely research into dynamics at divergent plate boundaries and at the core-mantle boundary.
The thesis of Anna Alexandra Vackiner focuses on the geometric architecture and tectonic evolution of the Permian series, combining seismic interpretation (3D block), field studies in an analogue basin (Panamint Valley in California), as well as 2D restoration of representative cross sections through time in order to illustrate the complex interaction between multiphase extension, inversion and salt diapirism. It will be of major interest for exploration geologists involved in tectonically complex areas. - Francois Roure, August 2012 This thesis improves the understanding and localization of the Upper Rotliegend II tight gas reservoir rock facies. It provides insights into the detailed Upper Rotliegend II palaeo-topography and local tectonically induced sediment thickness changes prior to a multi-phase tectonic overprinting. The research presented in this study further focuses on the tectonically induced synsedimentary facies distribution in transtensional continental settings on the basis of a comparison with a modern field analogue, which enables a detailed analysis of the reservoir rock's distribution and its properties. The study is rounded off with an analysis of the influence of the multiphase tectonic overprinting on the mature Upper Rotliegend II reservoir rocks.
With a length of about 1200 km, the Son-Narmada-Tapti Lineament (NSL) is one of the most prominent geomorphic features in the Indian subcontinent. Anomalous conductive bodies are delineated at mid-lower crustal depths below major earthquake epicentral zones. The region has been interpreted as the collision zone of the Indian Plate with the Eurasian Plate. The NSL zone is therefore also known to be the second most important tectonic feature in the Indian geology, after the Himalayas. The present thesis describes significant new insight into the seismotectonics of this Central India tectonic zone, based on thorough magnetotelluric studies. The main objectives of the present study are: (i) to delineate subtrappean sediments across the NSL region along four different traverses, (ii) to understand the characterization of geo-electrical structure of the crust and examine the nature of geo-electrical signatures of the known faults, (iii) to integrate the results with other geophysical data such as seismicity, gravity and heat flow, in order to understand the tectonic scenario of the region. Deep electromagnetic (magnetotelluric) analyses were integrated in this study with gravity, seismic and heat flow studies and distinct, delineated deep crustal features. The resulting high conductivity is justified with the presence of fluids at mid-lower crustal depths. The migration of these fluids from mantle to mid-lower crustal depths through pre-existing brittle fracture/fault zones were obviously caused by the plume related to the Deccan volcanism. Migration of the fluids generated a higher fluid pressure along the faults and resulted in earthquakes. Based on the geo-electric sections derived along the four traverses of the Narmada-Son Lineament Zone, the present study gives important clues on the subduction/collision history in this important tectonic zone.
This book provides an integrated approach to the assessment of seismic hazards. The reduction of losses expected by future earthquakes is probably the most important contribution of seismology to society. Large earthquakes occurred in densely populated areas highlight the dramatic inadequacy of a massive portion of the buildings demonstrating the high risks of modern industrial societies. Building earthquake-resistant structures and retrofitting old buildings on a national scale can be extremely expensive and can represent an economic challenge even for developed western countries. Earthquakes can cause also several psychological problems due to the fact that such kind of disasters will result in casualties, collapsing of houses, strategic buildings and facilities and deeply affect a community. Moreover in our society it is necessary to properly plan emergency responses and rescues taking into account any possible secondary effect in order to avoid more casualties.
This book will broaden readers' understanding of pegmatites in a special geodynamic setting, dealing with the emplacement of the Hagendorf-Pleystein Pegmatite Province (HPPP) in the Central European Variscides. This treatise illustrates the complex processes leading to the formation and partial destruction of the pegmatites, documenting the geochronological, chemical, mineralogical, geological and geomorphological / sedimentological data set. The book starts with a detailed account of the economic geology of the various pegmatites, explaining why these deposits are a major resource of ceramic raw materials. In its concluding section, a model of the pegmatite evolution in an ensialic orogen provides meaningful insights into the genetic aspects of pegmatite generation. The Late Paleozoic rare-element pegmatites of the HPPP, Oberpfalz-SE, Germany, rank among the largest concentrations in Europe. The biggest pegmatite of this mining district totals 4.4 million tons of ore (Hagendorf-South). The mining history of the HPPP is restricted to the 20th century, when local entrepreneurs started mining operations in search of ceramic raw materials, feldspar and quartz. Today the "Silbergrube Aplite" is still worked for feldspar. The traditional mining of pegmatitic and aplitic rocks in Central Europe, such as the Bohemian Massif, which is shared by Germany, the Czech Republic, Poland and Austria, has been focused on these industrial minerals. In addition to these major commodities, lithium was mined for a period of time. But even today many of these pegmatites of calc-alkaline affiliation have not lost their appeal to mineralogists and mineral enthusiasts for their wealth of minerals that contain P, Nb, Ta, Li, Be, B, U, Th, Sc, Ti and Sn. The most favorable crustal section to bring about pegmatitic rocks of this type, encompassing pegmatoids, metapegmatites, reactivated pseudopegmatites and pegmatites sensu stricto is the ensialic orogen, exemplified by the Variscan (Hercynian) Orogen, which geodynamically connects the Paleozoic pegmatite provinces in North America and Europe. The geological history of the HPPP, however, goes much further than the Carboniferous-Permian magmatic activity, when the last structural disturbances of the Variscan orogeny affected the NE-Bavarian Basement between 450 and 330 Ma. During this time mafic magmatic rocks together with calcareous and arenaceous sediments were converted into paragneisses, calcsilicate rocks, and amphibolites. It is the period of time when tectonic shortening led to over thrusting and when the emplacement of nappes and the architectural elements of the ensialic orogen began taking shape. During the Late Permian, the Mesozoic and the Cenozoic, the HPPP did not lie idle in geological terms; hypogene and supergene alteration continued and found its most recent expression in alluvial-fluvial "nigrine" placer deposits, which resulted from the unroofing of the pegmatites and aplites in the HPPP and can be used even outside HPPP as an ore guide to pegmatites.
A complete and updated catalogue of impact craters and structures in South America from 2014 is presented here. Approximately eighty proven, suspected and disproven structures have been identified by several sources in this continent. All the impact sites of this large continent have been exhaustively reviewed: the proved ones, the possible ones and some very doubtful. Many sites remain without a clear geological "in situ" confirmation and some of them could be even rejected. Argentina and Brazil are leading the list containing almost everything detected. In Bolivia, Chile, Colombia, Guyana, Paraguay, Peru, Uruguay and Venezuela only a few were observed. Only Ecuador is waiting for new discoveries. So far, the largest well stated impact site is still the Araguainha structure in Brazil with its 40 kilometers in diameter. However, two possible impact structures are larger than Araguainha: Malvinas, (with 250 kilometers in diameter) and Vichada in Colombia, (50 kilometers). This study also reports the existence of some Tertiary-Quaternary glassy impactite layers: the "escorias" and "tierras cocidas" of the pampas in Argentina.
The Lakshadweep islands are a group of 36 coral islands in the Indian Ocean. These small islands are unique for their aquatic bio-diversity and vast blue lagoons. This book presents the results of studies done by the authors during the period 1990 to 2009 that address the beach morphology, hydrodynamics, energy resources and management options with special reference to the issue of both natural and anthropogenic coastal erosion. The relatively low island elevation makes the islands more susceptible to high-wave attack and coastal flooding during adverse weather conditions. The islands are also prone to risks from episodic events like cyclones and deep depressions. This highlights the need for a comprehensive study of the wave, climate and coastal processes at work during different seasons to delineate the factors responsible for shoreline changes and also to identify the locations that need protection and the management options. This book will serve as a guide to researchers, scholars and students who are interested in the coastal processes of coral islands.
In this book, the author describes in simple, non-technical terms the adventures he has experienced during his work as an earth scientist in some of the remote parts of the arid and semi-arid world. His aim in writing this concise account of some of the work he has been involved in over the past fifty years is to try to convey to the non-specialist some of the excitement and fun involved in fieldwork in the drier regions of the world. His studies of the soils, landforms and the recent geological history of arid and semi-arid regions have taken Martin Williams to some remarkable places in Africa, Asia, Australia and the Middle East. Not only are the landscapes themselves often stunningly beautiful, but the contact with people from quite different backgrounds and cultures has been an enriching experience. His work has taken him to places far off the beaten track, whether it be the rugged mountains of Ethiopia and northern China, the sandy deserts of the Sahara and Rajasthan, or the great river valleys of Somalia, central India and the Nile. The chapters that follow are not intended to form a coherent chronological narrative, although they do appear in rough chronological order. They should rather be viewed as vignettes or brief evocative descriptions, much as in the discursive tradition of the wandering Irish storytellers. Acting on the principle that it is not necessary to be solemn to be serious, the author aims to entertain as well as to instruct.
Public Universities and the Public Sphere argues that two crises facing America - a crisis of public discourse and a crisis of public higher education - are closely connected. Part of the solution, Smith argues in this timely work, to both crises lies in understanding and building on the connection.
Coming of Age in Times of Crisis is an anthropological study of the intersecting roles of gender and schooling in the lives of rural Venezuelan youth as they make the transition to adulthood during times of national political and economic crisis. Strongly grounded in local detail while speaking to larger comparative issues and the crises that surround globalization, the study enables us to see how gender roles and social class are reproduced in a culture experiencing profound upheaval, and to see how rural Venezuelans have managed to reproduce and change their culture in these circumstances. This book is based on two-and-a-half years of ethnographic field research Hurtig conducted in the Andean region of Venezuela between 1991 and 1993, and again briefly in 1996.
An exploration of international privatization of higher education in post-communist Europe from two top scholars in the field. Levy and Slantcheva trace the ramifications of globalization in Central and Eastern Europe as well as in the former Soviet republics.
The contributors look at universalizing discourses concerning young children across the globe, which purport to describe everyone in a scientific and neutral way, but actually create mechanisms through which children are divided and excluded. The contributors to this book employ post-structuralist, postcolonial, and feminist theoretical frameworks.
At the beginning for the new millennium, higher education is under siege. No longer viewed as a public good, higher education increasingly is besieged by corporate, right-wing and conservative ideologies that want to decouple higher education from its legacy of educating students to be critical and autonomous citizens, imbued with democratic and public values. The greatest danger faced by higher education comes from the focus of global neo-liberalism and the return of educational apartheid. Through the power of racial backlash, the war on youth, deregulation, commercialism, and privatization, neo-liberalism wages a vicious assault on all of those public spheres and goods not controlled by the logic of market relations and profit margins. Take Back Higher Education argues that if higher education is going to meet the challenges of a democratic future, it will have to confront neo-liberalism, racism, and the shredding of the social contract.
One of the problems which beset the practical conservation of stone buildings is the fragmentation of the disciplines involved. This book, with both volumes now available as one invaluable paperback, brings these disciplines together by the involvement of contributors with different experiences and approaches to the same material.
The continuously growing human population along the world's coasts will exacerbate the impact of human activities on all coastal environments. Restoration activities will therefore become increasingly important. In particular, sandy shores and coastal dunes will require significant restoration efforts because they are preferred sites for human settlement, industrial and urban development and tourism. With this book experts in the field present a comprehensive review of restoration studies and activities, where 'successful' and 'failed' studies or approaches from around the world are contrasted and compared. A major asset the book provides is a compendium of studies showing that coastal dune restoration has many definitions and thus leads to many different actions. This volume addresses those with an interest in conservation ecology and biology, coastal dune dynamics and geomorphology, and coastal management who are seeking information on the different strategies for coastal dune restoration applied in different regions of the world. Finally, it will be a valuable resource for coastal scientists and planners, as well as for local and state officials, residents of coastal communities, environmental advocates and developers. |
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