Paleogeographic Constraints on Middle- to Late-Jurassic Tectonic Reconstruction of the Maya Block of Southern Mexico and Equivalent Strata of Northwestern South America
Peter Bartok, Maria Carolina Mejia-Hernandez, Murad Ismael, 2015. "Paleogeographic Constraints on Middle- to Late-Jurassic Tectonic Reconstruction of the Maya Block of Southern Mexico and Equivalent Strata of Northwestern South America", Petroleum Geology and Potential of the Colombian Caribbean Margin, Claudio Bartolini, Paul Mann
Download citation file:
The early drift-phase paleogeography of middle to late Jurassic northwestern South America with rocks of equivalent age on the Maya Block of southern Mexico remains problematic. Most published work has relied on paleomagnetic data rather than detailed correlations between sedimentary rocks of similar age or the orientations of major Mesozoic rifts. Emphasis is on the Kimmeridgian and Tithonian because of their economic importance. The southern Mexico Maya Block and Guatemala Rubelsanto trough are most likely related to the Triassic back-arc spreading of central Mexico and the back-arc basin of the Magdalena rift, which includes the Cocinas trough of the Guajira. The Yucatan rotation during the early Jurassic orients the Akal horst of Reforma and aligns it with the Cocinas trough, causing the two to have similar paleogeographies. Of particular significance is the presence of Kimmeridgian ammonites in the Cocinas Group of the Guajira and the potential relationship of the Cocinas with the Kimmeridgian of southern Mexico. The role played by the Chiapas Block is discussed, and this block is considered to have been a later addition to the Maya Block. It is most likely post-Kimmeridgian and does not appear to have played a role during the late-Jurassic depositional setting. The proposed model allows for Kimmeridgian exploration targets to extend beneath the Artesa–Mundo Nuevo platform (southern Reforma trend), which may be present under more favorable marine conditions in the projected Cocinas trough of the western part of the Gulf of Venezuela.
Figures & Tables
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.