div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentpp-570-plate-3-4-usgs-united-states-department-of-the-interior-geological-surveyhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: pp 570 plate 3 4 - USGS · united states department of the interior geological survey —00 0 stope ph 600 600 db 600 00 500 prepared in cooperation geological survey loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220424155f300ae4fd91ba16cc1568f5html5thumbnails1jpg width=140 height=200 divdiv