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<br /> <br /> <br />September 8, /87/, //lorning <br /> <br />156 <br /> <br />FOURTH SI';(;MENT <br /> <br />.1 <br />;.~ <br />~ <br />J.'< <br />,~ <br /> <br />Labyrinth Canyon <br />Camera Station 722 <br /> <br />I <br /> <br />I <br />1 <br /> <br />The camera station is on the east <br />bank of the Green River opposite the <br />mouth of Trin-Alcove (Three Can- <br />yons). The view is across the river, <br />looking up the Trin-Alcove. We located <br />the camera station by parallax among <br />the alcoves and our position is probably <br />accurate to about five feet, although <br />oOset slightly toward the water's edge <br />because a heavy thicket of willows <br />obscures the view from Beaman's sta- <br />tioll higher on the bank. On the oppo- <br />site bank, Beaman's willows have <br />hugely been replaced by tamarisks. <br />The mouth of Trin-Alcove Creek has <br />shined about fifty feet upstream since <br />1871. <br />All the rock in view is Navajo <br />Sandstone, representing almost the en- <br />tire thickness (about four hundred feet) <br />of the fcmnation. In its lower part here <br />are a few lhill purplish (Kayenta-like) <br />sandstone interbeds, one of which, on <br />the west bank above Trin-Alcove, con- <br />tains molds and casts of gypsum crys- <br />tals. vVe detected no changes in the <br />bedrock. <br /> <br />