An Extensive Pre-Cretaceous Weathering Profile in East-central and Southwestern Minnesota PDF Download
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Author: Dale R. Setterholm
Publisher:
ISBN:
Category : Saprolites
Languages : en
Pages : 40
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Author: Dale R. Setterholm
Publisher:
ISBN:
Category : Saprolites
Languages : en
Pages : 40
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Book Description
Author: Dale R. Setterholm
Publisher:
ISBN:
Category :
Languages : en
Pages : 29
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 292
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Author: Pieter Berendsen
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 234
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Book Description
Author: Domenico Calcaterra
Publisher: Geological Society of London
ISBN: 9781862392977
Category : Earth movements
Languages : en
Pages : 254
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Book Description
This volume is intended to provide an up-to-date overview of the approaches, methodologies and techniques devoted to better understand-ing of the weathering conditions of rock masses on slopes. According to the local conditions, a variety of slope movements may take place and involve weathered rock masses. Shallow and rapid soil slips evolving to debris flows are probably the most common type of slope movement. At the same time, deep-seated, intermittent landslides can also affect large volumes of weathered rocks and soils. Despite the high frequency of landslides in weathered materials, and the damage and casualties they repeatedly cause, little is known about the relationship between weathering and slope move-ments. This book presents worldwide case studies, where a variety of geo-logical and geomorphological settings are discussed. The content is divided into three sections: the first is devoted to broad aspects of the weathering/landslide processes; the second and third sections include papers dealing with igneous/metamorphic and sedimentary weathered rocks, respec-tively.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 936
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Author: Raymond R. Anderson
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 60
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The Middle Proterozoic Midcontinent Rift System (MRS) of North America is a failed rift that formed in response to region-wide stresses about 1,100 Ma. In Iowa, the MRS is buried beneath 2,200-3,500 ft of Paleozoic and Mesozoic sedimentary rocks and Quaternary glaciogenic deposits. An extremely large volume of sediments was deposited within basins associated with the rift at several stages during its development. Although the uplift of a rift-axial horst resulted in the erosional removal of most of these clastic rocks from the central region of the MRS in Iowa, thick sequences are preserved in a series of horst-bounding basins. Recent studies incorporating petrographic analysis, geophysical modeling, and other analytical procedures have led to the establishment of a preliminary stratigraphy for these clastic rocks and interpretations of basin geometries. This information has allowed the refinement of existing theories and history of MRS formation in Iowa. Additionally, drill samples previously interpreted as indicating the existence of early Paleozoic basins overlying the Proterozoic MRS basins were re-examined. Samples previously interpreted as deep-lying Paleozoic rocks are now known to have caved from upper levels of the drillhole and were out of stratigraphic position. No deep Paleozoic basins exist in this area. These investigations led to the development of petrographic parameters useful in differentiating the Proterozoic MRS Red clastics from Paleozoic clastic rocks having similar lithologies.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 138
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 322
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Author: Johan Kleman
Publisher:
ISBN:
Category : Glacial landforms
Languages : en
Pages : 316
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