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<br /> <br />Labyrinth Canyon <br />Camera Station 476 <br /> <br />Sejl/ember to, /87/, morning <br /> <br />FOURTII SE(;MENT <br /> <br /> <br />The camera station is at the foot of a Wingate <br />Sandstone cliff at the west end of the ridge (c)rming <br />the "knot" of Bowknot Bend. We arc looking east, <br />toward the "bow"; the upstream segment oflhe river <br />is on the left. <br />Bedrock exposed in the canyon walls ranges from <br />the upper part of the Moenkopi Formation up to <br />the lower part of the Kayenta Formation. The large <br />cliff is Wingate Sandstone capped by the slabby <br />Kayenta. All the foreground and most of the canyon <br />walls below the cliff are Chinle Formation, whose <br />"Black Ledge" is prominent below the \\Tingate. <br /> <br />164 <br /> <br />Moenkopi is exposed between talus and slides on <br />the lower canyon walls. No changes were observed <br />in the bedrock. <br />Vegetation along the river, however, has changed <br />considerably. On the river bottom at the len, a dense <br />thicket of tamarisk, serviceberry, and oak has filled <br />in the open area behind the willows. On the right, <br />an island has shifted downstream and is now over- <br />grown with tamarisk and fringed with willow. The <br />river was much lower at the time of Beaman's photo- <br />graph, and considerably more sand banks and bars <br />were exposed than when we were there. <br />