S U M M A R Y We present the evidence for an anomalous southwest-dipping slab in southern Mexico. The main evidence comes from a clear receiver function image along a seismic line across the Isthmus of Tehuantepec and is also supported by a previous global tomographic model. The slab dips at 35◦, is approximately 250 km in length and appears to truncate the Cocos slab at about 120 km depth. We ...

Coarse-grained limestone samples were collected across the Hudson Valley Fold-Thrust Belt with the aim of determining the temporal and spatial relationship between calcite twinning strain and fold-thrust belt development. The majority of the samples have well defined oblate strain ellipsoids with the maximum shortening axes (e3) perpendicular to bedding strike, and e3 magnitudes that range from...

Bai Hassan Formation is exposed as remnants of beds from previous formations due to severe erosion that were removed. Results grain size analysis revealed most the studied sediments coarse-grained ranging coarse sand gravel. The study shows are poorly sorted. values skewed coefficients ranged fine strongly skewed, and negative indicate occurrence hard changes in environment. Meanwhile, kurtosis...

The link between orogenic activity and foreland basin stratigraphy is well established; however, potential controls by foreland basin stratigraphy on thrust belt architecture have not been fully evaluated. Mechanical properties of typical foreland basin stratigraphic successions influence the structural development of fold-thrust belts in predictable ways. Fundamental features of foreland basin...

Abstract The Sinu fold belt, located in northwestern Colombia, is the southwesternmost part of South Caribbean Deformed Belt, which has been interpreted as an accretionary wedge resulting from subduction Plate under American Plate. geological interpretation 2D seismic surveys and bathymetric maps, with aid a few exploration wells, basis to construct structural map several sections illustrate of...