div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=usgs-open-file-report-90-647-bhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: USGS Open-File Report 90-647-B loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsusreader031viewer202201292161c8e59487139006ca705f68html5thumbnails1jpg width=140 height=200 divdiv