Eastport quadrangle notebook # 5, 1908
Page 56
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Transcription
1. Gray porphyry tuff w/ 1cm fragment of bright pink & weathered palygote. 205 feet broad. 2. Gritty. Rather fine grained trap from amygdaloidal. Width 350 feet 3. Covered (Scarlet valley) 50 feet broad 4A Creamy dark red and tuff. Fragments rather small, pink & reddish black. Strike N 37° W. dip 35° N. E. width 120 feet. At the base are 4 feet of tuffs of dark gray-red tinges w/ in weathering white & minute frag- ments (reddish black) showing on black surfaces or weathered surfaces. 4B Covered. 40 feet in an excavated valley. 4C Dark red porphyry tuff. Strike N. 37° W. dip 35° N. E. Similar to No 4A, charged with large quartz crys & palygorn phenocrysts. Matrix dark red. Rubble dark red. width weather dark color & minute dark bright red. Rubbles very small & much spumous Rock easily mistaken for soft flow. Close jointing N 64° E 4D Also tuff, similar to 4 but the matrix is a general gray in streak of dark red & rock weathers light color typically white. Specimen fine tuff is associated with darker phases turning toward reddish gray 100ft broad. 5. Covered 570 feet half of which is in a depressed sag. 6F Fragmented and tuff w/ fragments.