palaeocurrent

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palaeocurrent

(ˈpælɪəʊˌkʌrənt)
n
(Geological Science) geology an ancient current, esp of water, evidence of which has been preserved in sedimentary rocks as fossilized ripple marks, etc
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References in periodicals archive ?
The published paleocurrent data indicate the supply of sediments took placefrom theAravali Ranges, India.
The sedimentological work was completed with the collection of paleocurrent data and the analysis of vertical variability of grain-clast sizes.
This is consistent with paleocurrent data that suggest a northwestward (present-day coordinates) flow direction, with the source region to the SE and a deep basin to the NW (Schenk 1970; Waldron et al.
Two dominant paleocurrent directions, one to the north another to the south, is determined.
In order to better understand the process of incrustation, mineralogical enrichment, and paleocurrent flow, magnetic susceptibility signature is used.
The measurement were analyzed using variable constraints system by calculating the Mean Vector Azimuths (MVA) and variables of the cross bedded units of the Ajali Sandstone (Steinmetz,1962) in order to determine the paleocurrent of the Ajali Sandstone as well the trend of the paleocurrent by constructing rose diagram.
Nautiloids and current ripples as paleocurrent indicators in Upper Ordovician limestones, Anticosti Island, Canada.
Petrofabric, the study of the preferred alignment of minerals and rocks, is used as a proxy measurement for paleocurrent directions in sedimentary rocks, emplacement flow directions in igneous rocks, and strain directions in deformed and metamorphosed rocks.
The evidence typically cited in support of a braided stream model includes prevalence of massive or planar-bedded conglomerate and cross-bedded sandstone, low paleocurrent dispersion, and lack of characteristic vertical sequences such as point-bar sequences seen in meandering streams.