Ground Penetrating Radar in Sediments
Ground penetrating radar (GPR) is transforming the way earth scientists and engineers describe and interpret near-surface sedimentary environments in the field. Because of recent advances in equipment, GPR now provides continuous, high-resolution data that other geophysical investigative tools cannot achieve. GPR has proven useful in a wide array of environmental, geological, and engineering applications.
Included in this book are practical guidelines for data collection and interpretation, from antennae configurations to sequence stratigraphy, together with new advances such as vertical radar profiles and 3-D GPR imaging for hydrocarbon reservoir modelling, designed to assist new and veteran users get the most from GPR. Case studies in this book detail GPR investigations in a wide array of sedimentary environments including alluvial fans, braided rivers, spits, beaches, sand dunes, lakes, bogs, and floodplains. Examples of GPR investigation applied to stratigraphic correlation problems in Holocene, Pleistocene, and ancient sediments; hydrocarbon reservoir modelling; and detection and mapping of contaminants, reservoir infilling, land mines, and fault displacements are included.
Evidence for dune reactivation from GPR profiles on the Maputaland coastal plain, South Africa
Published:January 01, 2003
Greg A. Botha, Charlie S. Bristow, Naomi Porat, Geoff Duller, Simon J. Armitage, Helen M. Roberts, Brendan M. Clarke, Mxolisi W. Kota, Philo Schoeman, 2003. "Evidence for dune reactivation from GPR profiles on the Maputaland coastal plain, South Africa", Ground Penetrating Radar in Sediments, C. S. Bristow, H. M. Jol
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The Maputaland area of northeastern South Africa is characterized by extensive dunefields which developed during polyphase reworking of regional aeolian cover sand from the Mid-Pleistocene to the Holocene. Extended parabolic dunes, many preserved only as wind-rift trailing limbs, as well as areas of sinuous crested dunes, hummocky dune systems and the high, composite, accretionary coastal barrier dune cordon are the dominant dune forms. There are few natural sections exposing the stratigraphic succession and unequivocal relative age relationships between dune systems are uncommon. A ground penetrating radar (GPR) survey of dunes and representative aeolian sand stratigraphic units was undertaken in...