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Serpentinite

Sheared light- to dark-green, serpentinite; chiefly altered harzburgite. Epiclastic serpentinite is poorly sorted, unsheared, and retains a characteristic epiclastic appearance in both clasts and matrix. Exposed in the Mayaguez, Rosario, Maricao, Sabana Grande, Yauco, Punta Verraco, Parguera, Cabo Rojo, San German, and Puerto Real quadrangles
LabelKJs
Geologic ageCretaceous ?-pre-Cretaceous ?
QuadranglesCabo Rojo, Maricao, Mayagüez, Parguera, Puerto Real, Punta Verraco, Rosario, Sabana Grande, San Germán, Yauco
MunicipiosCabo Rojo, Lajas, Maricao, Mayaguez, Sabana Grande, San German, Yauco

Bibliographic references

Curet, A.F., 1986, Geologic map of the Mayagüez and Rosario quadrangles, Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map I-1657, scale 1:20,000.
Mattson, P.H., 1973, Puerto and the Virgin Islands, in Spencer, A.M., ed., Data for orogenic studies: Geological Society of London Special Publication no. 4.
McIntyre, D.H., 1975, Geologic map of the Maricao quadrangle, western Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map I-918, scale 1:20,000.Volckmann, R.P., 1984a, Geologic map of the Cabo Rojo and Parguera quadrangles, southwest Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map I-1557, scale 1:20,000.Volckmann, R.P., 1984b, Geologic map of the Puerto Real quadrangle, southwest Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map I-1559, scale 1:20,000.Volckmann, R.P., 1984c, Geologic map of the San German quadrangle, southwest Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map I-1558.
Mattson, 1960
Krushensky and Monroe, 1978