Logs for interpretation practice

swedishstreakMechanics

Feb 22, 2014 (3 years and 6 months ago)

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Logs for interpretation practice

Things to record for each log:

1)
Interpretation of geomorphic setting of
sedimentation overall

2)
Each piece of evidence for an earthquake:

-
location

-
type of evidence

-
quality (poor, fair, good)

3) Number of earthquakes and the quality of each

4) Speculation about
paleoslip
/magnitude


Photo of the North Frontal thrust fault exposed
in a trench through young alluvium. The 1.7 m
dip
-
slip offset of a carbonate
paleosol

horizon
is readily visible. This offset must postdate the
age of detrital charcoal
retreived

from the
hanging
-
wall one meter left of the tape
measure, which we have dated with
radiocarbon as 9.7
Ka
. This demonstrates
Holocene activity along the North Frontal
thrust system.

http://www.esp.geos.vt.edu/spotila/js
-
nfts.html

http://www.geology.cwu.edu/
facstaff/charlier/currentprojec
ts/los_angeles_sum.html

T4 NW Wall

SW

NE

0

1 m

Scharer
, et al., 2007

Scharer
, et al., 2007

Scharer
, et al., 2007