Geology and hydrogeology of carbonate islands

Geology and hydrogeology of carbonate islands PDF Author: Leonard H.L. Vacher
Publisher: Elsevier
ISBN: 0080554660
Category : Science
Languages : en
Pages : 967

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Book Description
This book on geology and hydrogeology of carbonate islands is volume 54 in the Developments in Sedimentology series.

Geology and hydrogeology of carbonate islands

Geology and hydrogeology of carbonate islands PDF Author: Leonard H.L. Vacher
Publisher: Elsevier
ISBN: 0080554660
Category : Science
Languages : en
Pages : 967

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Book Description
This book on geology and hydrogeology of carbonate islands is volume 54 in the Developments in Sedimentology series.

Climate Change Effects on Groundwater Resources

Climate Change Effects on Groundwater Resources PDF Author: Holger Treidel
Publisher: CRC Press
ISBN: 0415689368
Category : Nature
Languages : en
Pages : 422

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Book Description
Climate change is expected to modify the hydrological cycle and affect freshwater resources. Groundwater is a critical source of fresh drinking water for almost half of the world’s population and it also supplies irrigated agriculture. Groundwater is also important in sustaining streams, lakes, wetlands, and associated ecosystems. But despite this, knowledge about the impact of climate change on groundwater quantity and quality is limited. Direct impacts of climate change on natural processes (groundwater recharge, discharge, storage, saltwater intrusion, biogeochemical reactions, chemical fate and transport) may be exacerbated by human activities (indirect impacts). Increased groundwater abstraction, for example, may be needed in areas with unsustainable or contaminated surface water resources caused by droughts and floods. Climate change effects on groundwater resources are, therefore, closely linked to other global change drivers, including population growth, urbanization and land-use change, coupled with other socio-economic and political trends. Groundwater response to global changes is a complex function that depends on climate change and variability, topography, aquifer characteristics, vegetation dynamics, and human activities. This volume contains case studies from diverse aquifer systems, scientific methods, and climatic settings that have been conducted globally under the framework of the UNESCO-IHP project Groundwater Resources Assessment under the Pressures of Humanity and Climate Change (GRAPHIC). This book presents a current and global synthesis of scientific findings and policy recommendations for scientists, water managers and policy makers towards adaptive management of groundwater sustainability under future climate change and variability.

Karst Modeling

Karst Modeling PDF Author: Arthur Palmer
Publisher: Karst Waters Institute
ISBN: 0964025841
Category : Science
Languages : en
Pages : 273

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Book Description
Proceedings of the symposium held February 24 through 27, 1999, Charlottesville, Virginia

Carbonate Reservoirs

Carbonate Reservoirs PDF Author: Clyde H. Moore
Publisher: Elsevier Inc. Chapters
ISBN: 0128081031
Category : Science
Languages : en
Pages : 392

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Book Description
Shallow-marine carbonate sequences commonly undergo exposure to meteoric waters. These waters are chemically aggressive toward sedimentary carbonate minerals, capable of rapidly dissolving grains and generating secondary porosity. The carbonate derived from dissolution can precipitate as cement, either nearby or hydrologically downstream, decreasing porosity. Thus the potential for restructuring of original depositional porosity is very high in the meteoric diagenetic environment. Chemical signatures of meteoric pore waters and meteoric carbonate cements are distinct and reflect kinetics of the CaCO3–H2O–CO2 system, climatic effects, and hydrologic setting. The meteoric diagenetic environment is subdivided into vadose and phreatic diagenetic zones. Caliches/calcretes are distinctive diagenetic profiles of uppermost vadose zones in semi-arid climates. Porosity development in vadose diagenetic zones is to a large degree a function of relative sea level, which controls the occurrence of localized floating freshwater lenses (during highstands) versus regional meteoric water systems (during lowstands). Detailed examples presented include Quintana Roo (Mexico) strandplains and Oaks Field (North Louisian Jurassic), both highstand prograding shoreline systems, and Great Bahama Bank and Barbados (lowstand platform-wide aquifer systems). Geochemical trends in calcite cements and porosity development patterns characteristic of regional meteoric aquifer systems are illustrated from Mississippian Lake Valley Formation grainstones (southwest New Mexico). Karst processes and porosity styles are described in order that paleokarst features in reservoirs can be recognized and/or predicted. Detailed evaluations of paleokarsted reservoirs include Yates and Ellenburger fields (Permian and Ordovician of West Texas, respectively) and Rospo Mare Field (Cretaceous), Adriatic offshore, Italy. Lastly, the validity and significance of dolomitization associated with meteoric and especially mixed meteoric–marine waters (Dorag model) is evaluated and found to be lacking.

Geology of the Cayman Islands

Geology of the Cayman Islands PDF Author: Brian Jones
Publisher: Springer Nature
ISBN: 3031082303
Category : Science
Languages : en
Pages : 295

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Book Description
Grand Cayman, Little Cayman, and Cayman Brac are, in reality, the summits of independent fault blocks that rise from the depths of the Caribbean Sea. This book traces the geological evolution of these islands over the last 30 to 35 million years. The balance between deposition of carbonate sediments and karst development of the exposed land was dictated by the interaction between ever-changing sea levels and vertical tectonic movement of the fault blocks. Today, drinking water needed for the ever-increasing populations of the islands is supplied largely by desalinization plants that are located in accord with a detailed knowledge of the bedrock. This book is based on an extensive data base that has been assembled over the last 40 years of field work and laboratory analyses. Noteworthy aspects of this database include: Approximately 60 visits to the islands over last 40 years – sampling and documentation of virtually every accessible outcrop on the islands (including some that no longer exist). Most samples have been fully documented petrographically and geochemically. Data from 120 wells that have been drilled to depths up to 245 m (most less than 125 m). Wells have been cored and/or chip sampled. Full documentation of drilling histories, XRD analyses of samples, extensive geochemical analyses for major and minor elements, stable isotopes, 87Sr/86Sr ratios, and Rare Earth Elements from numerous samples. Mapping and sampling of modern sediments, including sediment cores, from most of the lagoons around Grand Cayman. Extensive thin section petrography, scanning electron microscope, and electron microprobe analyses of the dolostones and limestones that form the bedrock of the islands. Samples and data collected from numerous caves on Grand Cayman and Cayman Brac have been used to track their developmental history. Detailed analyses of phosphates collected from Little Cayman. Detailed analyses of terra rossa collected from each of the islands.

Coastal Karst Landforms

Coastal Karst Landforms PDF Author: Michael J. Lace
Publisher: Springer Science & Business Media
ISBN: 9400750161
Category : Science
Languages : en
Pages : 431

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Book Description
Carbonate rock coasts are found world-wide, from continental shorelines of the Adriatic Sea of Europe to the Yucatan Peninsula of North America, and on tropical islands from Rodrigues Island in the Indian Ocean, to the Mariana Islands in the Pacific Ocean, to the Bahama Islands in the Atlantic Ocean. Such coasts are well known for their unusual and distinctive karst landforms. Karst processes, particularly those associated with coastal landforms, are proving to be surprisingly unique and complex. This volume presents a comprehensive overview of the processes associated with coastal karst development comparing examples from a broad geographical and geomorphological range of island and continental shoreline/paleoshoreline settings, including a review of pseudokarst processes that can compete with and overprint dynamic coastal karst landscapes. As effective management of hydrologic resources grows more complex, coastal caves and karst represent fundamental components in associated coastal aquifers, which in the rock record can also form significant petroleum reservoirs. Audience By providing a clearer understanding of the geological, biological, archaeological and cultural value of coastal caves and karst resources, this volume offers a critical tool to coastal researchers and geoscientists in related fields and to coastal land managers as it illustrates the diversity of coastal karst landforms, the unique processes which formed them, the diversity of resources they harbor and their relationship to coastal zone preservation strategies and the development of sustainable management approaches.

Climate Change and Impacts in the Pacific

Climate Change and Impacts in the Pacific PDF Author: Lalit Kumar
Publisher: Springer Nature
ISBN: 3030328783
Category : Science
Languages : en
Pages : 552

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Book Description
This edited volume addresses the impacts of climate change on Pacific islands, and presents databases and indexes for assessing and adapting to island vulnerabilities. By analyzing susceptibility variables, developing comprehensive vulnerability indexes, and applying GIS techniques, the book's authors demonstrate the particular issues presented by climate change in the islands of the Pacific region, and how these issues may be managed to preserve and improve biodiversity and human livelihoods. The book first introduces the issues specific to island communities, such as high emissions impacts, and discusses the importance of the lithological traits of Pacific islands and how these physical factors relate to climate change impacts. From here, the book aims to analyze the various vulnerabilities of different island sectors, and to formulate a susceptibility index from these variables to be used by government and planning agencies for relief prioritization. Such variables include tropical cyclones, built infrastructures, proximity to coastal areas, agriculture, fisheries and marine resources, groundwater availability, biodiversity, and economic impacts on industries such as tourism. Through the categorization and indexing of these variables, human and physical adaptation measures are proposed, and support solutions are offered to aid the inhabitants of affected island countries. This book is intended for policy makers, academics, and climate change researchers, particularly those dealing with climate change impacts on small islands.

Carbonate Reservoirs: Porosity, Evolution and Diagenesis in a Sequence Stratigraphic Framework

Carbonate Reservoirs: Porosity, Evolution and Diagenesis in a Sequence Stratigraphic Framework PDF Author: Clyde H. Moore
Publisher: Elsevier
ISBN: 9780080528571
Category : Science
Languages : en
Pages : 460

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Book Description
Carbonate Reservoirs: Porosity, Evolution and Diagenesis in a Sequence Stratigraphic Framework

World Atlas of Coral Reefs

World Atlas of Coral Reefs PDF Author: Mark Spalding
Publisher: Univ of California Press
ISBN: 9780520232556
Category : Nature
Languages : en
Pages : 442

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Book Description
An up-to-date, detailed, and fully-illustrated account of the biodiversity and status of coral reefs.

Perspectives on Karst Geomorphology, Hydrology, and Geochemistry

Perspectives on Karst Geomorphology, Hydrology, and Geochemistry PDF Author: Russell S. Harmon
Publisher: Geological Society of America
ISBN: 081372404X
Category : Science
Languages : en
Pages : 394

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Book Description