div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=index-to-maps-surficial-geology-1991a2018-northern-between-1991-and-2018-thathtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Index to Maps Surficial Geology 1991–2018 Northern sheet · between 1991 and 2018 that pertain to surficial geology industrial minerals and aggregate resources Maps published loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsmxreader033viewer20220416065e347b53bb095b2d352a02efhtml5thumbnails1jpg width=140 height=200 divdiv