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Deformed mafic sill in gneiss, North Carolina
Deformed mafic sill in Precambrian Blowing Rock Augen Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-81)
Download ImageFeldspar porphyroclasts in Augen Gneiss
Rotated and broken feldspars in augen gneiss of Precambrian Blowing Rock Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-73)
Download ImageFeldspar porphyroclasts in Augen Gneiss
Rotated and broken feldspars in augen gneiss of Precambrian Blowing Rock Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-69)
Download ImageFluorite vein in gneiss
Fluorite vein (calcium fluoride) in gneiss of the Precambrian Blowing Rock Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-62)
Download ImageShear fractures in feldspar porphyroclasts
Shear fractures in feldspar porphyroclasts of the Blowing Rock Augen Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-50)
Download ImageFeldspar porphyroclasts in Augen Gneiss
Feldspars and foliation in augen gneiss of Precambrian Blowing Rock Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-49)
Download ImageAsymmetric folds in gneiss, North Carolina
Asymmetric folds in Precambrian Wilson Creek Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-41)
Download ImageQuartz-filling in gneiss
Quartz-filling in core of fold in Wilson Creek Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-39)
Download ImageFolded gneiss, North Carolina
Folded gneiss, Precambrian Wilson Creek Gneiss, North Carolina. Note quartz filling in core. Blue Ridge Province of Appalachian Mountains. (171118-38)
Download ImageSchistose and feldspathic porphyroclasts in mylonite
Porphyroclasts of varying lithology in mylonite. Schistose ones are strongly flattened; feldspathic ones are more equant but rotated and broken. Precambrian Wilson Creek Gneiss, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-30)
Download ImageFencing to mitigate rockfall hazard
Fencing along highway to mitigate rockfall hazard in roadcut, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-29)
Download ImageFallen blocks along highway, North Carolina
Fallen blocks along highway below roadcut, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-25)
Download ImageQuartz veins in quartzite, North Carolina
Quartz veins in quartzite of Precambrian Grandfather Mountain Formation, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-17)
Download ImageQuartz veins in quartzite (vertical)
Quartz filled fractures in quartzite, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-16)
Download ImageQuartz vein cutting metaconglomerate
Quartz filled fracture cutting metaconglomerate of Precambrian Grandfather Mountain Formation, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-12)
Download ImageLineated amphibolite, North Carolina
Lineated amphibolite, Ashe Metamorphic Suite, North Carolina. (Lineations parallel to knife). Blue Ridge Province of Appalachian Mountains. (171118-6)
Download ImageFolded amphibolite, North Carolina
Folded amphibolite, Ashe Metamorphic Suite, North Carolina. Blue Ridge Province of Appalachian Mountains. (171118-2)
Download ImageExposed water table in quarry, Spokane, WA
Exposed water table (Spokane Aquifer) in quarry, Spokane, Washington (150705-38)
Download ImageMazama ash filling channel near Spokane, WA
Volcanic ash from eruption of Mt. Mazama (Crater Lake) filling channel near Spokane, Washington (150705-35)
Download ImageMazama ash filling channel near Spokane, WA
Volcanic ash from eruption of Mt. Mazama (Crater Lake) filling channel near Spokane, Washington. (150705-32)
Download ImagePegmatite dikes cutting gneiss, Washington
Pegmatite dikes cutting Cretaceous Newman Lake Gneiss, Washington (150705-10)
Download Image
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