Details
| Original language | English |
|---|---|
| Article number | L07301 |
| Journal | Geophysical research letters |
| Volume | 35 |
| Issue number | 7 |
| Publication status | Published - 16 Apr 2008 |
| Externally published | Yes |
Abstract
Earthquakes and coseismic slip on faults are the common response of Earth's crust to plate-tectonic forces. Here we demonstrate, using three-dimensional numerical experiments, that pulses of magmatic activity may alter the slip behavior of nearby tectonic faults by causing unusual aseismic creep and even reversals in the sense of slip. We apply our results to the Teton normal fault, Wyoming, which experienced hitherto unexplained episodes of reverse and normal creep between 1988 and 2001, to show that its anomalous behavior can be explained by inflation and deflation of two magma chambers beneath the Yellowstone caldera. Our findings imply a strong coupling between magmatism and tectonic faulting, which requires coordinated monitoring of both processes to improve our understanding of the resulting spatial and temporal strain pattern.
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- General Earth and Planetary Sciences
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In: Geophysical research letters, Vol. 35, No. 7, L07301, 16.04.2008.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Slip reversals on active normal faults related to the inflation and deflation of magma chambers
T2 - Numerical modeling with application to the Yellowstone-Teton region
AU - Hampel, Andrea
AU - Hetzel, Ralf
PY - 2008/4/16
Y1 - 2008/4/16
N2 - Earthquakes and coseismic slip on faults are the common response of Earth's crust to plate-tectonic forces. Here we demonstrate, using three-dimensional numerical experiments, that pulses of magmatic activity may alter the slip behavior of nearby tectonic faults by causing unusual aseismic creep and even reversals in the sense of slip. We apply our results to the Teton normal fault, Wyoming, which experienced hitherto unexplained episodes of reverse and normal creep between 1988 and 2001, to show that its anomalous behavior can be explained by inflation and deflation of two magma chambers beneath the Yellowstone caldera. Our findings imply a strong coupling between magmatism and tectonic faulting, which requires coordinated monitoring of both processes to improve our understanding of the resulting spatial and temporal strain pattern.
AB - Earthquakes and coseismic slip on faults are the common response of Earth's crust to plate-tectonic forces. Here we demonstrate, using three-dimensional numerical experiments, that pulses of magmatic activity may alter the slip behavior of nearby tectonic faults by causing unusual aseismic creep and even reversals in the sense of slip. We apply our results to the Teton normal fault, Wyoming, which experienced hitherto unexplained episodes of reverse and normal creep between 1988 and 2001, to show that its anomalous behavior can be explained by inflation and deflation of two magma chambers beneath the Yellowstone caldera. Our findings imply a strong coupling between magmatism and tectonic faulting, which requires coordinated monitoring of both processes to improve our understanding of the resulting spatial and temporal strain pattern.
UR - http://www.scopus.com/inward/record.url?scp=45549100569&partnerID=8YFLogxK
U2 - 10.1029/2008GL033226
DO - 10.1029/2008GL033226
M3 - Article
AN - SCOPUS:45549100569
VL - 35
JO - Geophysical research letters
JF - Geophysical research letters
SN - 0094-8276
IS - 7
M1 - L07301
ER -