Oblique collision between the Caribbean plate and Bahama Banks has lead an eastward migration of northern boundary by successive southward jumps major strike-slip faults. The Septentrional-Oriente Fault zone (SOFZ) defines present-day accommodating most escape plate. Here, we reevaluate complex history SOFZ along Windward Passage area easternmost region Cuba northwest Haiti. Based on seismic re...

Massive red or gray mudstones make up much of the fine-grained sedimentary rocks of the Newark Supergroup. In fact, the upper third of most sedimentary cycles in the fine-grained facies of most Newark basins is massive mudstone (division 3 of Olsen, 1984). Massive mudstones have not, however, been studied or described nearly as fully as conglomerates, sandstones, and laminated shales. This lack...

A program, INV2P5DSB, has been developed to simultaneously estimate the depth of a 2.5-D sedimentary basin and regional background from observed gravity anomalies. The density contrast is assumed to be varying parabolically with depth above the basement interface. The main program is supported with two subroutines GRAV2P5D and SIMEQ and a function GPRM. The analysis of gravity anomalies due to ...

A key goal of the STRATAFORM program has been to use observations of sedimentary processes operating on short time scales to improve our understanding of the development of stratigraphic sequences over time scales of 10 10 years. Tremendous progress in modeling sedimentary processes has been made under the program. However, further work is needed to achieve the goal of a processbased model for ...

Paleocurrents are sedimentological features contained in all sedimentary deposits, enabling the direction of movement of the sediment and the containing fluid at the time of deposition to be determined. This database contains paleocurrent directions and other relevant associated data from published sources and theses and dissertations for the entire Phanerozoic and Precambrian for all continent...

We explored the influence of a variety geometric and mechanical factors in evolution décollement folds above weak level sedimentary sequence. Under an applied overburden pressure, we construct nine discrete element models (DE-models) to test effects stratigraphy, thickness layer, number strong layers within cover The aforementioned parameters on structural style fold belts that develop during p...

Multichannel seismic-reflection data collected on the Peru margin as part of Leg 112 of the Ocean Drilling Program predrilling site survey define some tectonic and sedimentary features of the Lima and Yaquina basins. A narrow accretionary prism is imaged at the toe of the trench slope in both areas. Landward of the accretionary prism is a transition zone that may be underlain by older accreted ...

The oxidation and reduction that occur during early diagenesis of sediments has been studied in the interstitial waters of a rapidly accumulating sedimentary sequence from the Mediterranean margin of Spain. A series of reactions that are mediated by progressively lower free energy derived from oxidation of organic matter is evident in the sedimentary sequence. Iron and manganese are rapidly red...

Newly discovered xenoliths within Pliocene and Quaternary intermediate volcanic rocks from southern Peru permit examination of lithospheric processes by which thick crust (60–70 km) and high average elevations (3–4 km) resulted within the Altiplano, the second most extensive orogenic plateau on Earth. The most common petrographic groups of xenoliths studied here are igneous or meta-igneous rock...