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Series: GSA Memoirs
Publisher: Geological Society of America
Published: 01 January 1984
DOI: 10.1130/MEM162-p413
Three hornblendes from the unmetamorphosed El Chacao ultramafic complex intrusive into the Villa de Cura Group yield K-Ar ages between about 98 and 107 Ma, which sets a minimum age to the intrusion
Journal Article
Age of the Precambrian Roraima Formation in Northeastern South America: Evidence from Isotopic Dating of Roraima Pyroclastic Volcanic Rocks in Suriname
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 May 1973
GSA Bulletin (1973) 84 (5): 1677–1684.
