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Puerto Rico Cruise Overview

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Puerto Rico Cruise Overview

Time-Transgressive Deformational Effects of Oblique Underthrusting of Aseismic Ridges on the Puerto Rico Trench and Island Margin:
Sidescan, Seismic Reflection, Gravity and Magnetic Studies


Principal Investigator: Paul Mann

Funded by: National Science Foundation

Paul Mann and 2 students, Jean-Paul van Gestel and Steve Muszala are currently out on the R/V Ewing off Puerto Rico.

This is a cooperative project involving the University of Puerto Rico, UTIG and the University of Southern California. The Puerto Rico Trench and northern margin of the island of Puerto Rico occupy a zone of tectonic transition between subduction tectonics of the Lesser Antilles island arc and strike slip fault system to the west. The Main Ridge area of the Puerto Rico Trench is selected as the focus of this study as it appears to be the zone of active collision between elevated fracture zones on the downgoing North America plate and the Puerto Rico island slope of the overriding Caribbean plate. The plan for this project is to map this area with sidescan/bathymetric (MR1) and other geophysical (magnetic, gravity and 4-channel seismic) tools.

The Students:

Jean-Paul van Gestel has an MA in geophysics from the Univ. of Delft (Netherlands) and Steve Muszala has graduated with a BA in geophysics from Rutgers Univ. Both will be starting graduate work at UT this fall. After this cruise, Steve Muszala will go to Alaska to participate in the aerogeophysical survey with Larry Lawver.


The Study Area


Daily Reports from Paul Mann:


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