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Tilted fault block, SE California.
Aerial view of Eagle Mountain, a tilted fault block, in the center of the Amargosa Valley. Here, the Amargosa River empties out of a large playa. (SrF-02)
Download ImageMylonitic gneiss: top-right
Mylonitic gneiss and asymmetric porphyroclasts. In this example, shear was top-to-the-right (SrD-58).
Download ImageNormal fault, SE California.
Normal fault cutting Neogene volcanic rock of the Artist Drive Formation, Death Valley National Park, California. (SrF-05).
Download ImageStrain gradient in marble. Top-to-left sense-of-shear.
Marble mylonite, showing parts that are more highly strained than others. Top-to-left sense-of-shear. (SrD-56)
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Ductile shear zone in schist
Ductile shear zone offsets leucrocratic zones –everything is cut by a pegmatite dike (SrD-55)
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faulted diabase sill in marble
Contrasting behavior: faulted diabase sill and ductiley deformed marble, an example of contrasting behavior: brittle vs. ductile
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Coexisting ductile and brittle behavior
Coexisting ductile and brittle behavior: broken pegmatite “intruded” by ductiley flowing calcite marble (SrD-49)
Download ImageAxial planar cleavage and folds.
Axial planar cleavage and folds in quartzite. (SrD-42)
Download ImageSlaty Cleavage and bedding in folds
Slaty Cleavage and bedding in anticline-syncline pair. Devonian Old Red Sandstone, SW Wales, UK (SrD-43)
Download ImageCoexisting brittle and ductile behavior in quartzite.
Contrasting behavior: brittle faulting and ductile flow. (SrD-48)
Download ImageAxial planar cleavage and anticline
Axial planar cleavage and anticline in Devonian Old Red sandstone, SW Wales, UK. (SrD-44)
Download ImageStylolite in limestone
Note how much of the rock has dissolved along the stylolite! (SrD-40)
Download ImageMetamorphosed and deformed conglomerate
Metamorphosed and ductiley deformed conglomerate, (SrD-38)Newport, Rhode Island (SrD-38)
Download ImageStretched pebble conglomerate
Ductiley deformed pebble conglomerate. Kingston Peak Formation, SE California (SrD-39).
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