Field Notebook: Arizona, Texas. 1923, 1924
Page 99
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Transcription
Lisone schist = Archeoic of Grand Canyon. N.W-S.E. Apache Spring Test seen in Barnes Peak. Usually but a part of the gnf is present due to the great faulting. Litology highly variable from place to place. In the slate quadrangle this gnf is Kallidocopic in nature from place to place due to the extreme faulting. Barnes Peak 5528' high, has granite at base, then the Apache Spring capped by Slate lie. Over the granite is the Bearlar cong. 1-6' thick. A sea deposit derived from granite. Pioneer shale 200' Dark reddish-brown arenaceous shale. At the base has much granitic feldspar, but some occurs thin gnf. Has occasional beds of quartzite up to 18" thick. Barnes cong. 16-65' thick. Pellets well rounded. Has red jasper pellets, Pink quartzite pellets, 3 to 4" across. Lie in an argile cement. Quipring Spring quartzite, 200' thick. Often a laminated series of pink quartzites. Romano leans toward the Cambrian age, rather than Algonkian. Post Pennsylvanian faulting (normal). Strike of faults generally N.W-S.E and N.E-S.W. Following the faulting or accompanying it came rich forms of detritus. Came in quantity = the stratified breccia. As sills and into the faults shoving aside the strata.