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Problems associated with seismic facies analysis of diamicton-dominated, shelf glacigenic sequences

, : Problems associated with seismic facies analysis of diamicton-dominated, shelf glacigenic sequences. Geo-Marine Letters 10(3): 151-156

Diamicton-dominated shelf glacigenic sequences are characterized on high-resolution seismic records by a structureless to chaotic acoustic texture, often with abundant hyperbolic (point-source) reflections. Existing depositional models, based primarily on seismic data, have been constructed on the basis that this acoustic signature is indicative of subglacial till. However, borehole data from the UK continental shelf indicate that glaciomarine facies are also present. Thus, while this acoustic character may be indicative of diamicton lithofacies, it should not be taken as a predictive genetic indicator of a specific depositional process.


DOI: 10.1007/bf02085930

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