Configuration of the Colombian Caribbean Margin: Constraints from 2D Seismic Reflection data and Potential Fields Interpretation

Clockwise rotation of the Santa Marta massif and simultaneous Paleogene to Neogene deformation of the Plato-San Jorge and Cesar-Ranchería basins

“…emplacement along the western foothills of the Perijá range; (2) late Eocene to Oligocene opening of the Plato-San Jorge basin and continued extension throughout Miocene times, and (3) a Late Permian to Early Triassic magmatic belt spanning the Cordillera Central, Santa Marta massif, and Plato-San Jorge basin. In this section we integrate this information with new and existing geophysical (Flinch, 2003;Cerón et al, 2007;Mantilla-Pimiento et al, 2009) and paleomagnetic data (Bayona et al, this issue) and present a geometric and kinematic model for the evolution of the PlatoSan Jorge, Santa Marta massif and Cesar-Ranchería basin.…”

“…5). Only a few of the faults depicted in the seismic transects of Flinch (2003) and Mantilla-Pimiento et al (2009) could be incorporated in the final reinterpretation (Fig. 11) as the spatial resolution of this data set is much larger than Cerón's et al (2007) geophysically derived basement contours.…”

“…Uninterpreted seismic sections published by Flinch (2003) and Mantilla-Pimiento et al (2009), display a mostly undeformed, flatlying sedimentary sequence where strong seismic reflectors define normal faults in grabens that preserve a sedimentary package as old as Oligocene, with faults crossing strata as young as upper Miocene. A thick Pliocene to Pleistocene package blankets the entire basin.…”

“…Geophysical information is complemented with published boreholes (Rincón et al, 2007) to control depth to basement. Two seismic sections and line-drawings of seismic sections presented by Flinch (2003) and Mantilla-Pimiento et al (2009) were reinterpreted, while geophysically derived basement contours (Cerón et al, 2007) were re-drawn in light of the structural style of graben and horsts defined in the seismic sections (Fig. 10).…”

Provenance of Eocene–Oligocene sediments in the San Jacinto Fold Belt: Paleogeographic and geodynamic implications for the northern Andes and the southern Caribbean

“…Currently, a widely accepted model posits that the SJFB basin originated as an accretionary prism that formed in the Late Cretaceous and was subsequently deformed during the Oligocene (Duque- Caro, 1972Caro, , 1980Dewey and Pindell, 1985;Toto and Kellogg, 1992;Guzmán et al, 2004;Cardona et al, 2012). This last model implies the accretion of oceanic terranes (Cardona et al, 2012;Mora-Bohórquez et al, 2017) and the formation of a forearc basin related to the SJFB and the Lower Magdalena Valley (LMV) Research Paper (Mantilla-Pimiento et al, 2009;Mora et al, 2018;Mora-Bohórquez et al, 2017).…”