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Excerpt from On the Igneous and Pyroclastic Rocks of the Berwyn Hills (North Wales) This constitutes a large portion of the Central Upland of Wales, consisting principally of Ordovician sediments, anked on three sides by formations of Silurian age which once entirely covered it. It is not intended here to enter into the detailed history of the sedimentary rocks, which, nevertheless, is highly essential for the correct interpretation of numberless faults, as yet unmapped, and variations in horizontal equivalents. The task is the correlation of notes recorded during a series of years in a resume of the nature and classification of the bedded and complementary hypabyssal igneous rocks of the region. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
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This book is the first to describe the history of geoconservation. It draws on experience from the UK, Europe and further afield, to explore topics including: what is geoconservation; where, when and how did it start; who was responsible; and how has it differed across the world? Geological and geomorphological features, processes, sites and specimens, provide a resource of immense scientific and educational importance. They also form the foundation for the varied and spectacular landscapes that help define national and local identity as well as many of the great tourism destinations. Mankind's activities, including contributing to enhanced climate change, pose many threats to this resource: the importance of safeguarding and managing it for future generations is now widely accepted as part of sustainable development. Geoconservation is an established and growing activity across the world, with more participants and a greater profile than ever before. This volume highlights a history of challenges, set-backs, successes and visionary individuals and provides a sound basis for taking geoconservation into the future.
This book offers a comprehensive review devoted exclusively to slate as dimension stone. Beginning with a description of the slate as dimension stone, the book describes the origin of slate and related geological phenomena. It thoroughly explains key data acquisition methods and techniques, which are accompanied by extensive data. In turn, slate standards are introduced and compared with regard to their importance for product quality. The book covers in detail the specific petrographical, fabric, strength, physical properties and weathering behaviour of slates. The chapter on mining and production provides an overview of the different forms of exploitation and related geotechnical aspects, together with production and workflow design, from the beginning to the final product. The second part comprises a thorough description of worldwide slate deposits and their geology, properties and appearance as well as a brief introduction of the history. Given its scope and accessible format, the book represents an essential guide for scientists, engineers, and professionals in geology, conservation science, architecture, and mining, as well as readers who are active in the slate industry.
There are three types of rock—igneous, metamorphic and sedimentary. Sedimentary rocks form from the weathering, erosion, transportation and deposition of older rocks. Applied Sedimentology describes the formation, transportation and deposition of sediment, and the post-depositional processes that change soft sediment into sedimentary rock. Sedimentary rocks include sandstones, limestones and mudstones. All the world's coal, most of its water and fossil fuels, and many mineral deposits occur in sedimentary rocks. Applied Sedimentology shows how the study of sediments aids the exploration for and exploitation of natural resources, including water, ores and hydrocarbons.* Completely revised edition; Like its precursor, it describes sediments from sand grains to sedimentary basins; Features up-to date account and critique of sequence and cyclostratigraphy * Extensively illustrated with photos and remotely sensed sea bed images describing sedimentary processes, products and depositional systems; Color plates illustrate sediment textures, lithologies, pore types, diagenetic textures, and carbonate and clastic sequence stratigraphic models* Emphasises the applications of sedimentology to the exploration for and exploitation of natural resources, including water, ores and hydrocarbons* Extensive references and up-to-date bibliography for further study