div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=usgs-oop-14-ordovician-units-air-bao-from-u-s-geological-survay-hopkin-andhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: USGS · Oop 14 Ordovician units AIR Bao from U S Geological Survay Hopkin and Mlnnoapoll South both map 1:24OOO 1972 Modified from Norvitch EXPLANATION Correlation of loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220710215fd54d0e3918c02fbb5a2ba3html5thumbnails1jpg width=140 height=200 divdiv