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#stratovolcanos, #mirrorimage

#stratovolcanos, #mirrorimage

San Andreas fault, Earth's biggest transform plate boundary.

San Andreas fault, Earth's biggest transform plate boundary.

Geologic Folds in the Lower Ugab valley in Namibia - photo from northseattle.edu--- Wow!

Geologic Folds in the Lower Ugab valley in Namibia - photo from northseattle.edu--- Wow!

Near the edge of Engabreen glacier, the contortions of time are visible in the sinuous infolding of stone. (Photograph by Erlend Haarberg)

Near the edge of Engabreen glacier, the contortions of time are visible in the sinuous infolding of stone. (Photograph by Erlend Haarberg)

Can't have something on California without showing the San Andreas Fault!  It's the "biggie."  I've walked ON it...it's a strange feeling too!!!

Can't have something on California without showing the San Andreas Fault! It's the "biggie." I've walked ON it...it's a strange feeling too!!!

Geological folding involves the plastic deformation (bending, buckling) of a single or multiple strata, such as sediments and rocks, which were originally horizontal surfaces. Although even brittle rocks may undergo plastic deformation when stresses are applied over considerable periods of time (low strain rate). Beyond plastic deformation, rocks fail structurally and faulting occurs.

Geological folding involves the plastic deformation (bending, buckling) of a single or multiple strata, such as sediments and rocks, which were originally horizontal surfaces. Although even brittle rocks may undergo plastic deformation when stresses are applied over considerable periods of time (low strain rate). Beyond plastic deformation, rocks fail structurally and faulting occurs.

The igneous intrusion at Devil's Tower, WY. I'm going camping there soon! Someday I'll go back when I can climb it.

The igneous intrusion at Devil's Tower, WY. I'm going camping there soon! Someday I'll go back when I can climb it.

Aerial shot shows the San Andreas Fault advancing southeast through the Carrizo Plain (north of Los Angeles). In the foreground, the block on the west side of the fault, right, has been raised up due to plate movement, damming the drainage of water running down from the hills to the east, left.   Photo: R.E. Wallace, USGS

Aerial shot shows the San Andreas Fault advancing southeast through the Carrizo Plain (north of Los Angeles). In the foreground, the block on the west side of the fault, right, has been raised up due to plate movement, damming the drainage of water running down from the hills to the east, left. Photo: R.E. Wallace, USGS

igneous dike, an intrusion of molten magmas into an existing crack

igneous dike, an intrusion of molten magmas into an existing crack

Some seriously folded and faulted rocks (possibly with a folded fault?) Eliat Mtns, southern Israel

Some seriously folded and faulted rocks (possibly with a folded fault?) Eliat Mtns, southern Israel

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