Interplay between erosion and tectonics in the Western Alps

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doi: 10.1111/j.1365-3121.2006.00669.x
Authors:Malusa, Marco G.; Vezzoli, Giovanni
Author Affiliations:Primary:
CNR, Institute of Geosciences and Earth Resources, Torino, Italy
University of Milano-Bicocca, Italy
Volume Title:Terra Nova
Source:Terra Nova, 18(2), p.104-108. Publisher: Blackwell, Oxford, United Kingdom. ISSN: 0954-4879
Publication Date:2006
Note:In English. 30 refs.; illus., incl. geol. sketch maps
Summary:Bedrock fission-track analysis, high-resolution petrography and heavy mineral analyses of sediments are used to investigate the relationships between erosion and tectonics in the W Alps. Along the Aosta Valley cross-section, exhumation rates based on fission-track data are higher in the fault-bounded W block than in the E block. Erosion rates based on the analysis of bed-load in the Dora Baltea drainage display the same pattern and have similar magnitudes in the relative sub-basins. Results indicate that climate, relief and lithology are not the controlling factors of erosion in the W Alps. The main driving force behind erosion is instead tectonics that causes the differential upward motion of crustal blocks. [G.L.B.]
Sections:Age determination; Various topics
Subsections:Petrology; weathering; soils
Subjects:Bedrock; Erosion; Exhumation; Fission-track dating; Geochronology; High-resolution methods; Plate collision; Plate tectonics; Subduction; Alps; Central Europe; Europe; France; Italy; Southern Europe; Switzerland; Western Alps; Western Europe; Aosta Valley
Abstract Numbers:06M/1883
Record ID:2006058475
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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