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Author: Edwin D. MacKee
Publisher:
ISBN: 9780719400636
Category : Marine sediments
Languages : en
Pages : 429
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Book Description
Author: Edwin D. MacKee
Publisher:
ISBN: 9780719400636
Category : Marine sediments
Languages : en
Pages : 429
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Book Description
Author: Edwin Dinwiddie McKee
Publisher:
ISBN:
Category : Sand
Languages : en
Pages : 450
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Book Description
Author: Edwin D. McKee
Publisher:
ISBN: 9781410214577
Category : Science
Languages : en
Pages : 440
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Book Description
Early descriptions and considerations of the characteristics of modern eolian sand deposits, mostly in the great sand seas of the world, date back to the 1880's and 1890's, when pioneer geologists and explorers wrote their classic papers on desert dunes. One or two decades later, interest in eolian processes greatly increased when wind-formed deposits were recognized in ancient sandstones in many parts of the world and in rocks of many ages. Throughout the 20th century, as the science of geology has expanded and the programs of the U.S. Geological Survey have proliferated to keep pace, dune studies have had a similar growth. Work was initially concentrated mostly on the description of dune forms or morphology and on analysis of textural features; by midcentury, however, major contributions had been made to the physics of eolian sand by detailed studies and interpretations of minor eolian structures, by statistical analyses of cross-strata dip directions, and by the development of systems for dune classification. Most recently, interest has been renewed in detailed grain studies, in the study of cross-strata, and in interpretation of dune patterns by means of aerial photographs and Landsat imagery. A major feature of this report on global sand seas is the compilation and comparison of available data based on many different methods of investigation. The application of these studies to economic problems, which is described in one chapter, clearly illustrates the importance of eolian deposits to our present culture and to human welfare. H. William MenardDirector, U.S. Geological Survey
Author: Michael M. Geary
Publisher: University of Oklahoma Press
ISBN: 0806154810
Category : Science
Languages : en
Pages : 405
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Book Description
Sculpted into graceful contours by countless centuries of wind and water, the Great Sand Dunes sprawl along the eastern fringes of the vast San Luis Valley of south-central Colorado. Covering an area of nearly thirty square miles, they are the tallest aeolian, or wind-produced, dunes in North America, towering 750 feet above the valley floor. With the addition of the enormous Baca Ranch and other adjacent lands, the dunes—originally designated as a National Monument in 1932—attained official National Park status in 2004. In Sea of Sand, Michael M. Geary guides readers on a historical journey through this unique ecosystem, which includes an array of natural and cultural wonders, from the main dunefield and verdant wetlands to the summits of the Sangre de Cristo Mountains. Described by explorer Zebulon Pike as “a sea in a storm” and by frontier photographer William Henry Jackson as “a curious and very singular phase of nature’s freak,” the Great Sand Dunes are a nexus of more than 10,000 years of human history, from Paleolithic big-game hunters to nomadic Native Americans, from Spanish conquistadores and transcontinental explorers to hard-rock miners and modern-day tourists in motor homes. Like these successive waves of visitors, Sea of Sand follows the water, analyzing its critical role in the settlement and development of the region. Geary also describes the profound impact that waves of human use and settlement have had on the land—which ultimately inspired the early grassroots efforts by San Luis Valley citizens to protect the dunes from further exploitation. He examines as well the more recent legislative effort led by an unprecedented coalition of local, state, and federal agencies and organizations, including The Nature Conservancy and the National Park Service, to secure the Great Sand Dunes’ national park designation. Amply illustrated, Sea of Sand is the definitive history of the natural, cultural, and political forces that helped shape this incomparable landscape.
Author: M.E. Brookfield
Publisher: Elsevier
ISBN: 0080869521
Category : Technology & Engineering
Languages : en
Pages : 671
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Book Description
Papers cover the entire spectrum of eolian investigations, ranging from the microscopic level to regional synthesis as well as ancient eolian deposits and their interpretation.
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 448
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 578
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Book Description
Author: Lyndon B. Johnson Space Center
Publisher:
ISBN:
Category : Apollo Soyuz Test Project
Languages : en
Pages : 714
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 808
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Book Description
Author: Vijay K. Sharma
Publisher: CRC Press
ISBN: 1439882789
Category : Science
Languages : en
Pages : 438
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Book Description
Introduction to Process Geomorphology provides an integrative approach to the process dynamics and the origin of landforms by the contemporary processes involved in their evolution. The author highlights the physical and chemical laws governing the activity of the earth-surface processes in specific environmental stress conditions, puts forward com
