Petroleum Geology and Potential of the Colombian Caribbean Margin
AAPG Memoir 108 is the first international book published on the petroleum geology and hydrocarbon potential of Colombia’s Caribbean Margin. Tis volume consists of 27 multidisciplinary papers that include a wide range of geological and geophysical topics, such as geochemistry and petroleum systems, earthquake seismology and tomography, seismic stratigraphy and sedimentology, oil and gas exploration plays, carbonate and siliciclastic petrology, basement studies, regional tectonics and structural geology, fold belt structural analyses, potential methods, and studies of deep-sea sedimentation on the Magdalena fan. This highly valuable and innovative piece of information is critical for geoscientists in the petroleum industry, research institutions, and academia. Do not miss the opportunity to learn about the extremely complex but fascinating geology of Colombia's Caribbean Margin and its important hydrocarbon potential.
Jurassic Silicic Volcanism and Associated Continental-arc Basin in Northwestern Colombia (Southern Boundary of the Caribbean Plate)
-
Published:January 01, 2015
-
CiteCitation
Carlos A. Zuluaga, Alejandro Pinilla, Paul Mann, 2015. "Jurassic Silicic Volcanism and Associated Continental-arc Basin in Northwestern Colombia (Southern Boundary of the Caribbean Plate)", Petroleum Geology and Potential of the Colombian Caribbean Margin, Claudio Bartolini, Paul Mann
Download citation file:
- Share
Abstract
New petrological observations from a volcanic unit at the base of the Jurassic sequence in the Alta Guajira region (Colombia) are consistent with the presence of a continental volcanic arc and the development of an intra-arc basin in the area. Fault-bounded Jurassic sedimentary basins in the Alta Guajira region were initiated during the early Jurassic (180 Ma) with silicic volcanism in the axis of a magmatic arc and later filled with a thick volcano-sedimentary sequence. The Jurassic silicic volcanic rocks at the base of the basin (Riodacita de Ipapure–Cerro La Teta) are observed as isolated remnants of andesite, dacite, and rhyolite. These lithologies are characterized geochemically by a calc-alkaline character, enrichment in light rare earth elements, Nb-Ta depletion, and Eu negative anomaly indicating a converging tectonic-setting origin, possibly in a continental volcanic arc related to early subduction. The unit marks the beginning of a continental-arc basin that was a sediment depocenter since the middle Jurassic in the area.