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Oceanography and Atmospheric Sciences and Meteorology
Center for Coastal and Ocean Mapping
Anisotropy of magnetic susceptibility; submarine landslides; slope failure; apparent overconsolidation
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Detecting Compaction Disequilibrium With Anisotropy Of Magnetic Susceptibility, Kurt Schwehr, Lisa Tauxe, Neal Driscoll, Homa Lee
Detecting Compaction Disequilibrium With Anisotropy Of Magnetic Susceptibility, Kurt Schwehr, Lisa Tauxe, Neal Driscoll, Homa Lee
Center for Coastal and Ocean Mapping
In clay-rich sediment, microstructures and macrostructures influence how sediments deform when under stress. When lithology is fairly constant, anisotropy of magnetic susceptibility (AMS) can be a simple technique for measuring the relative consolidation state of sediment, which reflects the sediment burial history. AMS can reveal areas of high water content and apparent overconsolidation associated with unconformities where sediment overburden has been removed. Many other methods for testing consolidation and water content are destructive and invasive, whereas AMS provides a nondestructive means to focus on areas for additional geotechnical study. In zones where the magnetic minerals are undergoing diagenesis, AMS should …