Reassessment of local paleocurrent directions in the Miami oolitic limestone with 3D ground-penetrating radar

Mark Grasmueck; Ralf Weger

doi:10.1117/12.462244

12 April 2002 Reassessment of local paleocurrent directions in the Miami oolitic limestone with 3D ground-penetrating radar

Mark Grasmueck, Ralf Weger

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Proceedings Volume 4758, Ninth International Conference on Ground Penetrating Radar; (2002) https://doi.org/10.1117/12.462244
Event: Ninth International Conference on Ground Penetrating Radar (GPR2002), 2002, Santa Barbara, CA, United States

Abstract

Active oolitic sand bars like the modern ones in the Bahamas as well as those in the ancient exhibit a complex internal architecture with a multitude of stacked sedimentary structures. As a result, the internal anatomy of these sand bars is usually too complex to be captured with twodimensional outcrop and one-dimensional well information. In order to improve fluid flow modeling used in water and hydrocarbon resource management, closely spaced threedimensional (3-D) data is needed to accurately map sedimentary structures. To improve our understanding of ancient oolitic sand bar anatomy we collected a 3-D 100 MHz Ground-Penetrating Radar (GPR) data cube covering an area of 24x46 m with 7m penetration depth. A grid spacing of 0.1x0.2 meters is needed to fully exploit the imaging capability of the 100 MHz antennae. The high-resolution 3-D GPR data enable: . Volume maging of oolitic sand bar architecture. . Understanding of spatial relationships of sedimentary structures. S Reconstruction of depositional environment and assessment of paleocurrent and sandwave migration directions.

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Mark Grasmueck and Ralf Weger "Reassessment of local paleocurrent directions in the Miami oolitic limestone with 3D ground-penetrating radar", Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); https://doi.org/10.1117/12.462244

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KEYWORDS

General packet radio service

Ground penetrating radar

Antennas

3D modeling

Water

3D acquisition

Reflectors

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