Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
Geology as a science has a fascinating and controversial history. Kieran D. O’Hara’s book provides a brief and accessible account of the major events in the history of geology over the last 200 years – from early theories of Earth’s structure during the Reformation, through major controversies over the age of the Earth during the Industrial Revolution, to the more recent twentieth-century development of plate tectonic theory, and on to current ideas concerning the Anthropocene.
Carbonate petrography — the study of limestones, dolomites and associated deposits under optical or electron microscopes —greatly enhances field studies or core observations and can provide a frame of reference for geochemical studies. Petrography is an especially powerful tool because it enables the identification of constituent grains, the detailed classification of sediments and rocks, the interpretation of environments of deposition, and the determination of the often complex history of post-depositional alteration (diagenesis).
Foraminifera have an evolutionary history that extends back to the Cambrian, more than 525 million years ago. Since then, they have radiated and evolved. To date, approximately 60,000 fossil and modern species have been validly recognized (LANGER, 2011), and an estimated 10,000 species (including only 40-50 planktonic species) are still living (VICKERMAN, 1992), constituting the most diverse group of shelled microorganisms in modern oceans (SEN GUPTA, 1999). These small-sized organisms, usually 0.1 to 1 mm, may be very abundant, and tens of thousands living specimens per square meter may be found in some environments (WETMORE, 1995). Their mineralized tests (shells) usually get preserved in the sediment after the death of the organism and may constitute a major, sometimes the dominant, part of many modern or fossil sediments (fig. 1). They are easy to collect, and their high-density populations provide an adequate statistical base, even in small volume samples, to perform environmental analyses, making them a powerful tool for environmental assessment. <...>
This book is a photographic introduction to metamorphic rocks. It is meant to be a survey of mostly typical metamorphic rocks, minerals, and structures as they appear in the field, and the metamorphic processes that make them. Its purpose is to help guide the eye of any student of geology to better see the geologic features in metamorphic rocks that might otherwise remain invisible or obscure. This book is a training tool, one of many, to help budding geologists of metamorphic rocks, young and old. <...>
Through the years, geologists, mining engineers, and others operating in the minerals field have used various terms to describe and classify mineral resources, which as defined herein include energy materials. Some of these terms have gained wide use and acceptance, although they are not always used with precisely the same meaning.
The U.S. Geological Survey (USGS) collects information about the quantity and quality of all mineral resources. In 1976, the USGS and the U.S. Bureau of Mines developed a common classification and nomenclature, which was published as USGS Bulletin 1450-A—“Principles of the Mineral Resource Classification System of the U.S. Bureau of Mines and U.S. Geological Survey.” Experience with this resource classification system showed that some changes were necessary in order to make it more workable in practice and more useful in long-term planning. Therefore, representatives of the USGS and the U.S. Bureau of Mines collaborated to revise Bulletin 1450-A. Their work was published in 1980 as USGS Circular 831— “Principles of a Resource/Reserve Classification for Minerals. <...>
Книга является руководством пользователя по работе с многофункциональным программным комплексом ANSDIMAT, ориентированным на интерпретацию опытно-фильтрационных опробований и получение фильтрационных характеристик водоносных пластов. В книге подробно изложены все возможности программного комплекса, предложены удобные алгоритмы ввода данных и обработки исходной информации, описаны условия проведения полевых экспериментов и типовые гидрогеологические схемы, реализованные в комплексе. Большое место уделено математическому аппарату, зашитому в компьютерный код программы. Содержится полезная справочная информация о расчетных схемах, аналитических решениях и способах обработки. Книга предназначена для пользователей программным комплексом ANSDIMAT, а также для гидрогеологов, занимающихся вопросами изучения, обработки и интерпретации данных опытно-фильтрационных опробований аналитическими и численными методами.
Luan Thanh Pham, Saulo Pomponet Oliveira and Cuong Van Anh Le Editorial for the Special Issue "Application of Geophysical Data Interpretation in Geological and Mineral Potential Mapping" Luan Thanh Pham, Saulo Pomponet Oliveira, Cuong Van Anh Le, Nhung Thi Bui, An Hoa Vu and Duong Anh Nguyen Gravity Data Enhancement Using the Exponential Transform of the Tilt Angle of the Horizontal Gradient Aleksey Egorov, Vladimir Antonchik, Natalia Senchina, Igor Movchan and Maria Oreshkova Impact of the Regional Pai-Khoi-Altai Strike-Slip Zone on the Localization of Hydrocarbon Fields in Pre-Jurassic Units of West Siberia
Petroleum geochemistry improves exploration efficiency by accounting for many of the variables that control the volumes of crude oil and natural gas available for entrapment, including source-rock distribution, richness and quality, thermal maturity, and the timing of generation-migration-accumulation relative to trap formation. It is most powerful when used with other disciplines, such as seismic sequence stratigraphy and reservoir characterization. Four key technology milestones form the basis for most modern applications of geochemistry to exploration.
Successful exploration for mineral resources depends on integrated application of our understanding of the geology that hosts ore deposits, and their geochemical and geophysical expressions. Geochemistry is one of the oldest exploration techniques, but it is also one of the most modern. In its earliest form, it involved tracing alluvial minerals, especially gold, back to their source. Over time, it has developed as a result of improved analytical techniques, different sampling media, changes in extraction methods, and improvements in data processing and presentation to become the versatile and sophisticated suite of methods available to modern explorers.
Вы приступаете к изучению расширения к ArcGIS компании ESRI® модуля Geostatistical Analyst, предназначенного для усовершенствованного моделирова ния поверхности с использованием детерминистских и геостатистических методов. Модуль Geostatistical Analyst расширяет возможности ArcMap за счет появления дополнительных инструментов, предназначенных для исследовательского анализа пространственных данных, а также Мастера операций геостатистики, который поможет вам в процессе построения статистически достоверной поверхности. Поверхности, создаваемые с помощью модуля Geostatistical Analyst, могут быть впоследствии использованы в моделях ГИС и для визуализации, в том числе с использованием таких расширений ArcGIS, как ArcGIS Spatial Analyst и 3D Analyst. <...>
