div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: US Geological Survey Publications Warehouse · OPEN-FILE REPORT IOTAMORPHIC ROCKS 81-1 170 380 30 310 000 FEET 2 4263000mN GEOLOGICAL SURVEY 261000mE 265 000 F Ols 8800 rp src=https:reader033fdocumentsinreader033viewer20220427105f612171be528b28885deb92html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv