isopach map


Also found in: Wikipedia.

isopach map

[′ī·sə‚pak ‚map]
(geology)
Map of the areal extent and thickness variation of a stratigraphic unit; used in geological exploration for oil and for underground structural analysis.
References in periodicals archive ?
An isopach map of the Duperow Formation reveals that this unit thickens to the north with an overall change of 100 to 200 ft.
Bostock (1952) presented the first isopach map of the White River ash, and suggested that deposits up to 30 cm thick were found as far away as Carmacks, 330 km from the source.
The Rustler isopach map shows a northeast to southwest trending area of thinning located northeast of Cedar Lake Playa.
Isopach maps of key reservoir intervals of interest, including the Marcellus and Utica (Point Pleasant) shale formations;
The ages of key bio- and lithostratigraphic levels were interpolated from radiocarbon-dated intervals, and isopach maps were constructed between the dated horizons.
Whether they are trying to track down isopach maps and seismic stratigraphy data that details the Upper Pliocene and Quaternary deposits in the South Caspian Basin or are simply trying to find content related to a known geological basin, they need sophisticated data at their fingertips.
Model output can include geological cross sections and isopach maps, as well as grade and tonnage estimates.
Structure and isopach maps of the Paleozoic rocks of Indiana.
Sediment characteristics and surface, structure-contour, and isopach maps demonstrate that the alluvial deposits include at least 2 distinct units.
Isopach maps, which are supported by historic core drill data on the lands, indicate that the seam thickness increases by as much as 15 inches on the Westchester Expansion such that seam heights greater than 47 inches are to be expected as mining progresses to the southwest compared to seam heights of approximately 32 inches on Cobalt's existing Westchester Mine lease.
Currently, the seismic data is being interpreted which will result in structure and isopach maps at various geologic horizons.
In conducting their review, the consultants relied upon the accuracy and completeness of data furnished by the company, including leaseholds, interests owned, production and well-test data from examined wells, geological structure and isopach maps, well logs, core analyses, pressure measurements and other supporting information.