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1.- A BIOSTRATIGRAPHICALLY WELL-CONSTRAINED K-BENTONITE U-PB ZIRCON AGE OF THE LOWERMOST DARRIWILIAN STAGE (MIDDLE ORDOVICIAN) FROM THE ARGENTINE PRECORDILLERA INTERNATIONAL UNION OF GEOLOGICAL SCIENCES (IUGS); OTTAWA, ON; CAN; CANADA, 1997 Ver registro
2.- U-PB AND PB-PB AGE CONSTRAINTS ON PALEOPROTEROZOIC MAGMATISM, DEFORMATION AND GOLD MINERALIZATION IN THE OMAI AREA, GUYANA SHIELD ELSEVIER; AMSTERDAM; III; INTERNATIONAL, 2000 Ver registro
3.- U-PB GEOCHRONOLOGY OF THE OMAI INTRUSION-HOSTED AU-QUARTZ VEIN DEPOSIT AND HOST ROCKS, GUYANA, SOUTH AMERICA GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 1998 GEOLOGICAL SOCIETY OF AMERICA, 1998 ANNUAL MEETING Ver registro
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