http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Characterization of the structure of faults in the Eocene Carrizo Formation near Gause, Milam County, Texas
xi, 97 leaves : illustrations, maps ; 28 cm.
and localized in a narrow zone. Neighboring fault segments
antithetic small faults also occurs near these geometric
appears to be more common where the adjacent fault segment
as well as the magnitude of overlap. With increasing
comprise a small-scale graben accommodating NW-SE extension.
consists of multiple fault segments arranged as "en echelon"
curving to abut the other or the two segments are linked in
displacement, fault structure becomes more complex. A fault
earlier formed segments. As in the earlier stage, systems of
exhibits a nonplanar local geometry. Enhanced development of
faults. Wall rock deformation adjacent a fault occurs but is
for this difference is unresolved. Cataclasis within the
form between and abut the earlier formed larger fault
Gause, Milam County, Texas. The faults strike NE-SW and
in direct association with the larger faults except for a
interbedded siltstones and shales. Five faults and fault
irregularities. Clay smears develop along fault segments
larger faults. In the initial stages of development, a fault
limited grain breakage together with rigid body grain
lithified quartz sandstones with several horizons with
m to between 6-15 m. Smaller displacement faults occur only
observed and are related to sense of fault stepover and shear
of a limited nature. Locally, drag folding occurs, but this
quarry in the Eocene Carrizo Formation near the town of
rotation. The limited grain breakage together with other
sandstone and clay in another subunit (unit B). The cause
secondary faults form in the overlap regions of larger
sedimentological data suggest the depth of burial during
segments. Three different systems of secondary faults are
series of excellently exposed, normal faults in a small
shear zones of faults in the sandstone consists of some
smears do not develop along faults that offset interbedded
system of small faults that forms locally between two of the
The Carrizo Fm. consists primarily of friable to weakly
the overlapping region by a system of secondary faults that
the subunits (unit A) of the Carrizo. In contrast, clay
This study characterizes the structure and evolution of a
usually overlap and link either directly by one segment
where they offset interbedded sandstone and clay of one of
zone evolves as more fault segments develop in proximity to
zones occur in the quarry with displacements ranging from 0.3
Issued also on microfiche from Lange Micrographics.