Integration of sedimentology and ground-penetrating radar for high-resolution imaging of a carbonate platform

Type Article
Date 2011-10
Language English
Author(s) Jorry StephanORCID1, Bievre Gregory2, 3
Affiliation(s) 1 : IFREMER, F-29280 Plouzane, France.
2 : Ctr Etud Tech Equipement Lyon, Lab Reg Autun, F-71404 Autun, France.
3 : Univ Grenoble 1, CNRS, Lab Geophys Interne & Tectonophys, UMR 5559, F-38041 Grenoble, France.
Source Sedimentology (0037-0746) (Wiley-blackwell), 2011-10 , Vol. 58 , N. 6 , P. 1370-1390
DOI 10.1111/j.1365-3091.2010.01213.x
WOS© Times Cited 12
Keyword(s) Carbonate platform, coral bioherms, ground-penetrating radar, Late Jurassic, Paris Basin
Abstract Ground-penetrating radar has not been applied widely to the recognition of ancient carbonate platform geometries. This article reports the results of an integrated study performed on an Upper Jurassic outcrop from the south-east Paris basin, where coral bioherms laterally change into prograding depositional sequences. Ground-penetrating radar profiles illustrate the different bedding planes and major erosional unconformities visible at outcrop. A ground-penetrating radar profile conducted at the base of the cliff displays a palaeotopographic surface on which the outcropping bioherms settled. The excellent penetration depths of the ground-penetrating radar (20 m with a monostatic 200 MHz antenna) images the carbonate platform geometries, ranging between outcrop workscale (a few metres) and seismic scale (several hundreds of metres). This study supports recent evidence of icehouse conditions and induced sea-level fluctuations controlling the Upper Jurassic carbonate production.
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