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Abstract

Summary

Anomalous features were identified on 3D seismic data within Eocene-age sedimentary strata in the Salina del Istmo Basin, offshore Mexico. Observations integrated from seismic stratigraphy, seismic geomorphology, geophysical signature, and gravity data suggest that these features are likely igneous intrusions. The intrusions are apparently sourced from the transitional zone between the continental and oceanic crusts. This area also corresponds to the basinward limit of the salt sequence; thus, the intrusions are located in an area relatively less-deformed compared to the rest of the basin. 3D seismic analysis of the overburden highlights disruption of the sedimentary strata due to the development of hydrothermal vents mainly overlying the tips of the igneous sills. No previous evidence of igneous intrusions has been documented in the deepwater Salina del Istmo Basin. Therefore, we discuss the exploration significance of these features in the context of the structural setting and location in the basin. These new findings are also relevant to and should be considered for further understanding the evolution of the Gulf of Mexico.

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/content/papers/10.3997/2214-4609.201901552
2019-06-03
2024-04-24

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901552
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Potential Igneous Intrusions Offshore Mexico: Exploration Significance
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201901552
/content/papers/10.3997/2214-4609.201901552
/content/papers/10.3997/2214-4609.201901552
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