div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document2003-the-samples-were-analyzed-at-the-us-geological-survey-thermochronology-labhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: 2003_Texto01pdfThe samples were analyzed at the US Geological Survey Thermochronology lab in Denver Colorado using a VG Isotopes Ltd Model 1200B Mass Spectrometer fitted with loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220423135edc33a2ad6a402d6666c476html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=document2003-the-samples-were-analyzed-at-the-us-geological-survey-thermochronology-labhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: 2003_Texto01pdfThe samples were analyzed at the US Geological Survey Thermochronology lab in Denver Colorado using a VG Isotopes Ltd Model 1200B Mass Spectrometer fitted with loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220423135edc33a2ad6a402d6666c476html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=document2003-the-samples-were-analyzed-at-the-us-geological-survey-thermochronology-labhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: 2003_Texto01pdfThe samples were analyzed at the US Geological Survey Thermochronology lab in Denver Colorado using a VG Isotopes Ltd Model 1200B Mass Spectrometer fitted with loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...