Lima Basin Petroleum Systems
Baseline Resolution & GSI
The Lima Basin is a frontier basin located offshore along the central coast of Peru, west and south of the Trujillo and Salaverry Basins, northwest of the Pisco Basin, and just west of the city of Lima. It lies in water depths ranging from 500 to 2,000m, and has a total area of approximately 22,725 square km. The basin is located in an extensional tectonic framework dominated by continental margin activity, close to the Peruvian trench.
The continental shelf in the Lima area is 40km wide, and the slope is defined by an abrupt change in the sea bottom depth, which reaches 2,000m at 60km from the shelf edge. The Lima Basin is separated from the Salaverry and Trujillo Basins by basement highs, and bounded on the south by the Abancay Deflection.
No wells have been drilled in the Lima Basin, and exploration activity has been limited mainly to regional seismic studies. Some widely spaced seismic data were obtained in the 1970’s and 80’s as a part of the Nazca Plate Project, studies by the University of Hawaii, and by Shell International. Previous studies of the Pisco Basin (Yukos, 2002; Petrotech, 2004; Gaffney, Cline & Associates, 2005) have included a small portion of the southern Lima Basin in their evaluations, based primarily on a 1993 Ribiana seismic survey. Leg 112 of the Ocean Drilling Program cored several shallow locations in the Lima area.
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