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Geologic Unit: Las Mesas
Map showing publication footprint
  • Usage in publication:
    • Las Mesas Greenstone
  • Modifications:
    • First used
  • Dominant lithology:
    • Greenstone
  • AAPG geologic province:
    • Caribbean region
Publication:

Schellekens, J.H., Montgomery, Homer, Joyce, James, and Smith, A.L., 1990, Late Jurassic to Late Cretaceous development of the island arc crust in southwestern Puerto Rico, IN Larue, D.K., and Draper, Grenville, eds., Transactions of the 12th Caribbean geological conference, St. Croix, U.S. Virgin Islands: Miami Geological Society, Transactions of the 12th Caribbean Geological Conference, St. Croix, U.S. Virgin Islands, August 7-11, 1989, no. 12, p. 268-281.


Summary:

Four rock types were distinguished by Mattson (1960, 1964) within the Bermeja Complex. The spilite is here named Las Mesas Greenstone. Age of greenstone shown in fig. 9 as Early Cretaceous. [Unit is not discussed in detail. Though intent to name is stated, this report is considered a first use rather than a naming paper.]

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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