paleoslope

paleoslope

[′pāl·ē·ə‚slōp]
(geology)
The direction of initial dip of a former land surface, such as an ancient continental slope.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The limitations of outcrop must be borne in mind when using these data to interpret paleoslope, as it is common for ripples in turbidite successions to record directions that differ from the local slope (e.g., Clayton 1993).
Veevers, J.J., Saeed, A., 2009, Permian-Jurassic Mahanadi and Pranhita-Godavari Rifts of Gondwana India: Provenance from regional paleoslope and U-Pb/Hf analysis of detrital zircons, Gondwana Research, 16, 633-654.
(107[degrees]) from a single locality in the Hampton Formation, northeastern Tennessee, and interpreted this to indicate that Chilhowee currents moved primarily down the regional paleoslope to the southeast.
With this paleoslope model it was possible to estimate the waterdepth range of many species of benthic foraminifers in the Late Cretaceous Basque-Cantabrian Basin.
Paleoslope is obtained by simplifying the equations governing fluid flow to the case of a steady, horizontally uniform flow in a natural channel, where friction on the walls of the channel is negligible compared to that on the channel bottom.
Channel paleoslopes were between 0.3 to 1.1 m/km and transported clasts with [D.sub.95] = 5.6 cm.
Reconstructing the flow conditions that resulted in the deposits of the Sharon Formation was accomplished by determining the dimensions of channels, the grain sizes transported by the streams, and the paleoslopes. Bankfull channel depth was obtained from the depth of scours, the maximum relief of gravel bar platforms, the maximum relief of bar-margin avalanche faces, and the height of dunes (Boothroyd and Ashley 1975; Ethridge and Schumm 1978; Friend 1978; Evans 1991; Mohrig and Smith 1991).
As this soil gains elevation on the paleoslope the A horizon disappears and a 3-5 cm thick, dark-red, slightly cemented [B.sub.s1] horizon directly overlies reddish yellow sand ([B.sub.s2] horizon).
The extent of such capping depends not only on the size of the volcano but also on the paleoslope and duration of the volcanic activity.
(1991): A paleoslope model of late Albian to early Turonian foraminifera of the western Atlantic margin and North Atlantic basin.
The tectonic patterns of the Sichuan and Tarim basins in China are mostly in the form of "big uplift and big depression." The distribution of oil and gas is mainly controlled by these large paleouplifts and relatively stable large-scale paleoslopes. Based on the accumulation of the liquid hydrocarbons, the paleo-terrain slope of the reservoirs is an important controlling factor for the enrichment degree and the pattern of the liquid hydrocarbons.
Few continuous reflections and variable amplitudes are found on paleoslopes. Middle sequences with erosion surfaces changed from Cretaceous to Tertiary.