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Alluvial fans offer a means to unravel the intricacies of landscape, tectonic, and climatic dynamics. This book and accompanying geologic map highlight alluvial fans and their deposits exemplified by a suite of debris-flow alluvial fans emanating from the Holocene-active western range front of the Sangre de Cristo Mountains in south-central Colorado. The link between morphologies of fan surfaces and the sedimentary facies of their deposits permits a basis for evolutionary process interpretation of debris-flow alluvial fan geomorphology. A grasp of these processes will help earth scientists better discern complexities between buried paleo-surfaces (intraformational progressive unconformities), surficial deformation, and landform development as recorded in debris-flow fan deposits in the sedimentary record.
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Construction and Modification of Debris-Flow Alluvial Fans
Verlag:
The Geological Society of Americ, 2023
ISBN 10: 0813725615
ISBN 13: 9780813725611
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Anbieter: Gardner's Used Books, Inc., Tulsa, OK, USA
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paperback. Zustand: Good. Good condition paperback. Minor edgewear and corner rubbing. Staple binding is in great shape. Tulsa's largest used bookstore. Located on South Mingo Road since 1991. No-hassle return policy if not completely satisfied. Bestandsnummer des Verkäufers mon0000366214
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Construction and modification of debris-flow alluvial fans as captured in the geomorphic and sedimentary record : examples from the Western Sangre de Cristo Mountains, South-Central Colorado
Verlag:
The Geological Society of America, 2023
ISBN 10: 0813725615
ISBN 13: 9780813725611
Neu
Soft cover
Anbieter: Joseph Burridge Books, Dagenham, Vereinigtes Königreich
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Soft cover. Zustand: New. v, 47 pages : illustrations (chiefly color), color map ; 28 cm. + 1 map (color ; 94 x 57 cm, folded to 28 x 22 cm). Abstract:Debris-flow alluvial fans are iconic features of dynamic landscapes and are hypothesized to record tectonic and climatic change. Here, we highlight their complex formation and evolution through an exemplary suite of Quaternary debris-flow alluvial fans emanating from the western range front of the Sangre de Cristo Mountains in south-central Colorado, USA. To evaluate the constructive and modifying processes that produce fan form and the associated sedimentary signatures, we applied a combined geomorphologic and sedimentologic approach using sedimentary facies analysis, soils mapping, high-resolution topographic data, and luminescence geochronology to document timing of fan construction and modification. We explored two subsets of fans in the study area: a southern set sourced from the extensively glaciated drainages of the Blanca Peak massif, and a northern set from the unglaciated drainages south of Great Sand Dunes National Park. Both sets of fans have: (1) active and successively abandoned surfaces that show evolving degradation of primary features through modification by secondary processes, (2) associated facies that display distinct characteristics representative of primary depositional and secondary modifying sedimentary processes, and (3) evidence of primary debris flow with subsequent modification by secondary processes. We found that surface geomorphology and facies assemblages in exposed alluvial-fan deposits represent sediment transport processes on both active and abandoned lobes. The link between fan surface morphologies and the sedimentary facies of their deposits provides a basis for an evolutionary process-based interpretation of debris-flow alluvial-fan geomorphology and provides a better understanding of complexities in buried paleosurfaces (intraformational progressive unconformities), surficial deformation, and landform development as recorded in debris-flow fan deposits in the sedimentary record. Bestandsnummer des Verkäufers PGGEOX13
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