This sample taken from a thrust fault
zone and contraction of fault zone caused developed the oblate shape of strain ellipsoid.
The largest compressions in the region were observed in the VAAN-MURA-OZAL triangle, which indicates that the thrust faults
: AT = Athens; LOT = Liberty-Orrington; MLT = Messalonskee Lake.
Wang, "Trenching exposures of the surface rupture of 2008 Mw 7.9 Wenchuan earthquake, China: implications for coseismic deformation and paleoseismology along the Central Longmen Shan thrust fault
," Journal of Asian Earth Sciences, vol.
When an earthquake occurs at a thrust fault
, the plate on top snaps upward.
An example of a thrust fault
is the fault in which the Northridge earthquake occurred.
This is a thrust fault
. Can you see how one section of land can override another?
Instead, stresses are displaced onto lesser-known faults - the Elysian Park near downtown Los Angeles, the Whittier, the Sierra Madre, the Oak Ridge, and the still unnamed thrust fault
that caused the Northridge earthquake of January 1994.
In this area, the Kootenay Formation coal seams are targeted in two structural zones which include a western thrust fault
and an anticline feature.
A paper in Nature Geoscience (see accompanying article) takes another look at these shallow moonquakes and establishes connections to some very young surface features called lobate thrust fault