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USGS: Geology & Mineral R…ssessment of Puerto Rico
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USGS Geology & Mineral Resource Assessment of Puerto Rico.iso
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Structural Blocks.tif
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1999-05-10
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OCR:
67)0 499 664(] 18'30 entra) gneous Province SFEM tgteors snooub Pr ?{} 18000 Km Recent sediments Middie Tertiary and vounger sedimentary rotk. Eocene layered rocks Lower tayered rocks Cretaceous Lower intrusives Tertiary Upper Cretaceous Serpentinite chert. Cretaceous layered rocks meta- basites Intrusives Figure 1 Geologic sketch map of Puerto Rico (hased on Briggs and Akers. 196S : (ox and Briggs. 1973: U.S Geological Survey quadrangie maps). 6700 66o3 Jortheast Seoun Provirce younger mtrusives retaceous inuusives 1965 Briges
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