BGuthrie Photos: AZ -- Grand Canyon Natl Park -- North Rim -- Scenery

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[1] GRCNS_120719_0001_STITCH.JPG

[2] GRCNS_120719_0002_STITCH.JPG

[3] GRCNS_120719_0005_STITCH.JPG

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[5] GRCNS_120719_0012_STITCH.JPG

[6] GRCNS_120719_0016_STITCH.JPG

[7] GRCNS_120719_0019_STITCH.JPG

[8] GRCNS_120719_0024_STITCH.JPG

[9] GRCNS_120719_0028_STITCH.JPG

[10] GRCNS_120719_0029_STITCH.JPG

[11] GRCNS_120719_0038.JPG	[12] GRCNS_120719_0052.JPG	[13] GRCNS_120719_0055.JPG	[14] GRCNS_120719_0069.JPG	[15] GRCNS_120719_0074.JPG	[16] GRCNS_120719_0085.JPG	[17] GRCNS_120719_0094.JPG	[18] GRCNS_120719_0096.JPG
[19] GRCNS_120719_0109.JPG	[20] GRCNS_120719_0114.JPG	[21] GRCNS_120719_0117.JPG	[22] GRCNS_120719_0122.JPG	[23] GRCNS_120719_0125.JPG $Bright Angel Fault Looking across the canyon, you can see evidence of a fracture in the earth, the Bright Angel Fault. Stretching across Grand Canyon in front of you, Bright Angel Canyon traces the route of the Bright Angel Fault. Faults are fractures in the earth's crust along which movement occurs. Rarely can you see a fault, but you can see evidence of it. Evidence can be seen here in the displacement on either side of the fault. On the opposite cliff, an offset in the rock layers -- best seen in the light-colored Coconino Sandstone -- demonstrates the shift. The layers on the right of the fault rise about 150 feet (50 meters) higher than on the left. Bright Angel Fault is still active, producing small earthquakes which visitors sometimes feel. Two major trails follow the trace of the Bright Angel Fault (photo below left). Side canyons, which tend to form along fault lines, become convenient routes for access into the Grand Canyon. The North Kaibab Trail follows the fault trace on this side of the canyon; the Bright Angel Trail follows it on the other. Most of the faults which criss-cross the Grand Canyon region (map below) are far older than the canyon itself. Movement along a fault creates a zone of weakness which becomes a channel for erosion (illustration below). Many of Grand Canyon's spectacular side canyons -- like Bright Angel Canyon -- have formed through erosion along zones of weakness which follow major north/south fault.$	[24] GRCNS_120719_0136.JPG	[25] GRCNS_120719_0137.JPG	[26] GRCNS_120719_0156.JPG
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[99] GRCNS_120719_0560.JPG	[100] GRCNS_120719_0577.JPG	[101] GRCNS_120719_0580.JPG	[102] GRCNS_120719_0581.JPG	[103] GRCNS_120719_0585.JPG	[104] GRCNS_120719_0595.JPG	[105] GRCNS_120719_0599.JPG	[106] GRCNS_120719_0608.JPG
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[115] GRCNS_120719_0646.JPG	[116] GRCNS_120719_0652.JPG	[117] GRCNS_120719_0656.JPG	[118] GRCNS_120719_0659.JPG	[119] GRCNS_120719_0665.JPG	[120] GRCNS_120719_0669.JPG	[121] GRCNS_120719_0679.JPG	[122] GRCNS_120719_0682.JPG
[123] GRCNS_120719_0689.JPG	[124] GRCNS_120719_0702.JPG	[125] GRCNS_120719_0707.JPG	[126] GRCNS_120719_0711.JPG	[127] GRCNS_120719_0714.JPG	[128] GRCNS_120719_0718.JPG	[129] GRCNS_120719_0720.JPG	[130] GRCNS_120719_0727.JPG
[131] GRCNS_120719_0730.JPG	[132] GRCNS_120719_0734.JPG	[133] GRCNS_120719_0738.JPG	[134] GRCNS_120719_0740.JPG	[135] GRCNS_120719_0755.JPG	[136] GRCNS_120719_0759.JPG $Angels Window: Perhaps this dramatic view of the Colorado River through the hole in the rock led to its name. During the uplift of the Kaibab Plateau, stress and strain caused the rock to fracture forming vertical joints that intersect the horizontal bedding planes. Weathering (rain, freezing and thawing) along these planes and joints has eroded a hole in the Kaibab limestone and enlarged it to form the window.$	[137] GRCNS_120719_0765.JPG	[138] GRCNS_120719_0773.JPG
[139] GRCNS_120719_0774.JPG $How many pinyon nuts must have fallen on this rock and shallow soil to produce these pines? Seeds are scattered by wind and animals and in many other ways. Only a few of the many seeds land in places where conditions allow them to survive and grow. Growing trees send roots down into cracks in the rock making the rock fracture move. This is a phase of weathering, erosion and soil formation.$	[140] GRCNS_120719_0777.JPG	[141] GRCNS_120719_0783.JPG	[142] GRCNS_120719_0786.JPG	[143] GRCNS_120719_0789.JPG	[144] GRCNS_120719_0792.JPG	[145] GRCNS_120719_0795.JPG	[146] GRCNS_120719_0799.JPG
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