Wednesday, July 12, 2017

Highlights: Seismic Expression of Fluvial Channels

Fluvial channels are inherently three-dimensional features; although challenging to study on two-dimensional outcrops, seismic data provide unique perspectives on their architecture. Alqahtani and others evaluate the geometry, dimensions, distribution and evolution of fluvial channel systems from a humid-tropical climatic setting through detailed analysis of high-resolution 3D seismic reflection data from the Malay Basin. The interpretations reveal eight depositional units that include systematic changes in six types of fluvial channels defined based on cross-sectional and planform geometries. The data provide input for reconstructions of the palaeo-hydrological conditions during Pleistocene sea-level cycles that affected the Sunda Shelf Sea. The manuscript further evaluates the roles that sea-level variations, climate, and sediment supply play on controlling the formation and evolution of fluvial systems, including incised valleys and associated tributary channels.

No comments:

Post a Comment