PIÑERO, Granite

MESOZOIC? (upper Jurassic?)

State of Cojedes, Venezuela

Author of name: P. Leuzinger, 1953 (private report).

Original reference: G. Feo-Codecido, 1953-4, p. 114.

Original description: ibid.

A term created by Leuzinger (private report) and published for the first time by Feo-Codecido (1953-4, p. 114) to designate a type of alkalic granite, characterized by a large proportion of alkali feldspars (usually orthoclase), which forms the hills of Piñero in the southeastern part of the El Baúl area. It is believed that this granite constitutes the inner portion and the youngest facies of a large granite batholith and some reasons are given for supposing this batholith to be intrusive into metamorphic rocks (possibly Jurassic-Triassic). Although the age of the granites is unknown, the fact that similar rocks encountered in wells drilled in southern Monagas, Anzoátegui and Guárico are not intrusive in the overlying Cretaceous Temblador formation suggests that the igneous activity took place prior to the time of deposition of the Temblador formation.

Gustavo Feo-Codecido