Death Valley Photo Suite for Site 7

Geologic context:  This outcrop is on the western margin of a marble belt that separates Precambrian migmatitic gneisses to the northeast from variably and complexly developed Willow Springs Pluton rocks to the southwest.  The light colored rock is the marble.  The darker and foliated phase in angular blocks in  the upper left corner is interpreted to be a earlier deformed phase of the Willow Springs Pluton, and the light colored grey phase is a finer-grained intermediate hypabyssal. The light green is later hydrothermal epidote which is particularly abundant in this area.  Some of the surfaces the epidote formed along show offsets and/or truncations and are clearly slip surfaces.   However, striae or slickensides were not observed. The marble is locally foliated and has a strong sub-horizontal lineation.  Variably involvement of the dike material suggests that this ductile fabric is at least partly if not largely syn-intrusion.  Whether the blocks of the earlier phase are xenoliths or slip-surface- bounded or both is a question.  The outcrop shows an interesting mix of intrusive, ductile and brittle features.

Excel sheet with tie point information: Site7TiePointCoordinates

Images from which model can be constructed.