SECO, Conglomerate

UPPER TRIASSIC

State of Zulia, Venezuela

Author of name: C. P. Bong, 1927.

Original reference: F. A. Sutton, 1946, p. 1639.

Original description: ibid.

Sutton (1946, p. 1639) stated that the Seco conglomerate is best exposed on the Quebrada Aponcito Seco to the northwest of Machiques in the District of Perijá, State of Zulia. It is described as a dull, reddish black to gray, hard, very coarse, massive, cobblestone conglomerate. The cobblestones are in part igneous and in part deerived from underlying Devonian. In the Quebrada Aponcito seco, the conglomerate attains its maximum noted thickness of 670 meters. It is unconformable with the Devonian Macoíta formation below and the basal sandstones and conglomerates of the Cretaceous above. The Seco conglomerate crops out in a narrow belt of limited extent along the eastern front of the Sierra de Perijá. It thins in a short distance northward and dies out before reaching the Cogollo River. Its southern extent is not known, but it was observed to occur in the Río Macoita section. Sutton stated that the Seco conglomerate is believed to be correlative with the La Quinta formation. This latter formation is considered to be Upper Triassic in age.

Private information indicates that the seco conglomerate is now believed to be correlative with the upper part of the La Quinta formation.

Leo Weingeist