div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentpubsusgsgov-or-decomposed-country-rock-surface-radioactivity-background-eluviihtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: pubsusgsgov · PDF fileEluvium or decomposed country rock surface radioactivity: background Eluvii ou rocha dlecompostŒ radioŒtividade superficiol: background Phonolite loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsinreader031viewer20220304115a9dc46a7f8b9ae0108b4c44html5thumbnails1jpg width=140 height=200 divdiv