GUARABAL, Conglomerate

See GUARABAL, Formation

GUARABAL, Formation

TERTIARY (middle Oligocene)

State of Falcón, Venezuela

Author of name: L. Adler, 1922 (private report).

Original reference: F. Hodson, 1926, p. 174.

Original description: ibid.

Hodson (1926, p. 174) used the name Guarabal conglomerates for a section of conglomeratic sandstones with thin beds of black shale and siliceous limestones on the north flank of the Serranía de San Luis. Liddle (1928, p. 254) puts the Guarabal "grit" or conglomerate in the upper part of the San Luis "formation". Senn (1935, p. 72 and 1940, p. 1580) on the other hand, puts it at the base of the Agua Clara formation and considers it evidence for a discordance between the middle and upper Oligocene.

Recent geologic mapping shows that the Guarabal has a maximum thickness of 300 meters and a lateral extent of only some 20 kilometers; and it is interpretad as a local facies along the border of the San Luis reef lt is considered one of the lithologie units within the Mitare group.

G. D. Johnson