paleocurrent


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paleocurrent

[¦pāl·ē·ō′kə·rənt]
(geology)
Ancient fluid current flow whose orientation can be inferred by primary sedimentary structures and textures.
References in periodicals archive ?
Evidence of tidal process is recorded by the presence of a tridirectional paleocurrent pattern in the sheet and channel deposits (reflecting the complex networks of tidal channels and bars), and herringbone cross stratification, tidal bundles and mud drapes in the sheet sandstones; features usually considered as typical of tidal bars (Darlymple, 1992; Willis, 2005; Olariu et al.
PROVENANCE IN THE SOUTHERN EXTREME OF THE MIDDLE MAGDALENA VALLEY DURING THE CENOZOIC: MEASUREMENTS BASED ON THE PALEOCURRENTS QUANTITATIVE ANALYSIS
However, the result of the paleocurrent analysis of the foreset of cross bedded units is well pronounced in the Ajali Sandstone and less pronounced in the Mamu Formation (this may be due to the presence of siltstone, shale and coal in Mamu and complete absence in Ajali sandstone).
Other field data includes sedimentary structures, paleocurrent measurements, and detailed grain-size measurements from certain beds.
Multiple accumulations of planar cross stratied coarse-grained sandstone beds with a small dispersion in paleocurrent directions are the evidence of the shallow sandy braided river system.
A single bedding surface exposed straight-crested ripples that were sufficiently well preserved to provide a paleocurrent direction estimate.
Paleocurrent data were represented in rose diagrams with PAST software (Hammer et al.
Paleocurrent and facies information suggest that the Mira terrane sources were located to the northwest at the time of deposition.