Studies In Mineralogy And Precambrian Geology

The web of geological sciences, Special papers 500 and 523, written in celebration of the 125th anniversary of the Geological Society of America.

This book shows the results of structural, compositional and evolutionary investigations of the Precambrian crust of the East European Craton in Lithuania and adjacent areas. This work contributes to the recognition of the platform basement, which remains weekly investigated worldwide, despite it encompassing the surfaces of cratons. It presents a methodological example of systematic studies of the covered platform basement, integrating petrological, geochemical, isotopic, and geophysical methods, as well as geological mapping, in order to present comprehensive geological picture of the subject matter. In a systematic and summarized form, factual data and intellectual material acquired by researchers are combined. Important papers and industrial reports (also written in Russian and Lithuanian) make this information accessible for both local and international scientists and practitioners and stimulate the advertising, application, and augmentation of this knowledge

This well-illustrated book aims to enhance observations and understanding of structural features and proximity-indicator minerals, critical in exploration. The book provides a unique blending of different content on observational and critical aspects of data acquisition, geological, structural, tectonic set-up, mineral deposit types, geophysical framework, and proximity indicator minerals. Combining these topics led to a comprehensive understanding to facilitate mineral targeting and exploration in green- and brown-field terrains. Besides field photographs, the write-up is lavishly supplemented with relevant geological and geophysical maps, tables, and case stories in field geology, making it useful for a much larger section of the geoscientific community professional geologists and geophysicists, students, teachers, and also decision-makers in geo-surveys and exploration.

The Development Potential of Precambrian Mineral Deposits covers several aspects of Precambrian mineral resource potential and assessment towards mineral exploration and mineral reserves. This book contains 27 chapters and begins with an overview of the world production and consumption of certain minerals. The next chapters describe the physical and chemical characteristics of certain mineral ores, as well as the mineral content of certain rock assemblages. These topics are followed by discussions of the geographical distribution of some ores, including discovered metal bearing zones in Africa. Considerable chapters are devoted to exploration techniques in tropical, temperate, and sub-arctic Precambrian areas. The remaining chapters examine the action of metamorphic and other geological processes in mobilizing ore minerals. The book will prove useful to geologists, researchers, and geology students.

Presents research in progress in Canada between May 1986 and April 1987 within federal and provincial departments and universities and includes a general overview of scientific research activities in geological and allied sciences. Compiled from a survey conducted January-March 1987. Lists mapping projects that are 1:50,000 or more, and less than 1:50,000, by province. Lists types of work being done in the following areas: environmental geoscience; geochemistry; geochronology; geomorphology; geomathematics; geophysics; geotechnique; glaciology; hydrogeology; mineral/energy geoscience; mineralogy/crystallography; paleontology; petrology; quaternary geology; remote sensing; sedimentology; soil science; stratigraphy; structural geology; and, volcanology. Includes a list of reporting organizations, a list of grant awards in the earth sciences for 1986/7 and an index to researchers.