Physics
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3103601o&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 3, CiteID L03601
Physics
7
Seismology: Paleoseismology, Tectonophysics: Heat Generation And Transport, Tectonophysics: Stresses-Crust And Lithosphere
Scientific paper
Faulted coals from eastern Kentucky and Montana (USA), and the south Wales coalfield (UK) show fault-related vitrinite reflectance anomalies interpreted as due to frictional heating during seismic slip. The vitrinite reflectance anomalies are converted to temperature using kinetic-based software (Easy%R) for post-seismic cooling rates. Shear stresses are calculated using Lachenbruch's [1986] piezometer, which depends only on the area under the thermal anomaly and fault displacement. For maximum displacements of 1-3 meters, the minimum shear stresses are 13-64 MPa, and overlap with seismological estimates of stress drops during modern earthquakes. The calculated local mean normal stress is ~100 MPa, resulting in coefficients of friction of 0.1-0.6 (thrust) and 0.2-0.4 (normal faults), which are lower than laboratory-based values.
No associations
LandOfFree
Paleo-stress estimates on ancient seismogenic faults based on frictional heating of coal does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Paleo-stress estimates on ancient seismogenic faults based on frictional heating of coal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paleo-stress estimates on ancient seismogenic faults based on frictional heating of coal will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1019329