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riding in East Dallas. Munger Ave.
set: www.flickr.com/photos/guyr/sets/72157628736812373/with/83...
iPhone Hipstamatic
1/5/2013
The light from my room, while focused on closer imperfections.
Taken with a Fuji Finepix XP10. Actually, taken from a still from the Fuji's HD video.
My daughter went to a special preview showing of the film tonight.
They were filmed watching it, she said she was one of the loudest cryers!
The San Andreas Fault, here exposed on the floor of the Carrizo Plain in one of the most desolate and least-visited regions of California. Note the offset streams cutting across the fault. On the far side is the Pacific plate and on the near side the North American. It's a right-lateral fault, meaning the other side of it is moving to the right, on whichever side you stand. The Pacific side is moving to the northwest in a motion geologists call "right step." Streams that once flowed straight across the fault now step to the right before they continue. These steps are recent. The plate below has moved hundreds of miles in the last two dozen million years. One study says stream channels were offset up to 50 feet in the 1857 Fort Tejon quake, one of the largest in historic time. This section of the fault raises the Elkhorn Scarp through the Elkhorn Hills. The most spine-like segment is also called Dragon's Back
Crystal Springs and San Andreas lake visible in the distance. Los Trancos is an unusually high spot along the fault line.
Wasserbillig is a lovely village on the River Mosselle. It has territory in France, Luxembourg and Germany. A tax man's nightmare!
The Salton Sea area is one of the southernmost locations where it is possible to see the trace of the San Andreas fault. It is not as clear as in the Carrizo Plain but it is possible to follow an alignment in the field that marks the boundary between rocks of different colors. In this picture, taken while looking south along the fault, the orange rocks are west of the fault while the tan badlands in the background are east of the fault. Of course the ephemeral streams that cut through these valleys are not bothered by the tectonic history of the area and carry their sediment across the fault and onto the Salton Sea depression.
Mecca, California
The crankshaft seal on the left side of my Simson S51 engine fell out, causing the engine to suck in and burn the gear oil while spilling gasoline into the gearbox.
Equipment: Nikon D90 with Tamron 60/2.0 Macro, camera flash
Software: None
These fault may represent 'soft-sediment' deformation related to dewatering of the sandstone - opinions differ. No broken grains may be observed along the faults, it looks like grains have rolled instead of fractured.
Fault gouge from California, USA. (~7.0 centimeters across at its widest)
Fault gouge is a relatively soft, unlithified, mud-like to clayey material that occupies some fault zones or fills matrix between fault breccia clasts. It forms from extreme pulverization and grinding during multiple fault movements over geologic time.
This sample is from the San Andreas Fault Zone, which is a transform plate boundary between the Pacific Plate and the North American Plate. These two tectonic plates are sliding past each other. Despite the word "sliding", movement along the fault zone is usually in the form of sudden jolts - these movements send out shock waves, which cause earthquakes.
The San Andreas fault gouge specimen seen here is principally composed of montmorillonite (also known as smectite), a silicate mineral often called "swelling clay". When wet, it expands. When dry, it shrinks. Surface outcrops of this fault gouge display popcorn weathering, which forms by repeated wetting and drying of swelling clays. Minor amounts of kaolinite clay are also present.
Locality: San Andreas Fault Zone, Mecca Hills, Riverside County, southern California, USA
Check out the horizontal displacement of this fault at Hoover Dam. It preceeded the construction of the Dam which is rated to withstand an earthquake in the range of 8.0. The shiny surfaces, because of compression, are called slickensides. They are naturally polished rock surfaces that occur when the rocks along a fault rub against each other, showing the direction of movement.