div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: by year70 to 100 mgg Group 111AB IVA and some IAB specimens this can be confirmed by microscopic ex- amination of polished and etched sections cut through unweathered portions src=https:reader036fdocumentsinreader036viewer20220629195ee26d50ad6a402d666ce5dfhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: by year70 to 100 mgg Group 111AB IVA and some IAB specimens this can be confirmed by microscopic ex- amination of polished and etched sections cut through unweathered portions src=https:reader036fdocumentsinreader036viewer20220629195ee26d50ad6a402d666ce5dfhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: by year70 to 100 mgg Group 111AB IVA and some IAB specimens this can be confirmed by microscopic ex- amination of polished and etched sections cut through unweathered portions src=https:reader036fdocumentsinreader036viewer20220629195ee26d50ad6a402d666ce5dfhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: by year70 to 100 mgg Group 111AB IVA and some IAB specimens this can be confirmed by microscopic ex- amination of polished and etched sections cut through unweathered portions src=https:reader036fdocumentsinreader036viewer20220629195ee26d50ad6a402d666ce5dfhtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: by year70 to 100 mgg Group 111AB IVA and some IAB specimens this can be confirmed by microscopic ex- amination of polished and etched sections cut through unweathered portions...