The terms isopach and isopach map are incorrectly used interchangeably to describe isochores and isochore maps. Isopachs and isochores are equivalent only. Commonly, the isopachs, or contours that make up an isopach map, display the See: contour, contour interval, contour map, formation, isochore, reservoir. true vertical thickness is an isochore map. Note that in common practice, isochore maps are informally referred to as “isopach” maps.

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Isopach and Isochore Maps

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Published by Brionna Smuin Modified over 3 years ago. Sedimentary beds may show lateral changes in thickness, either in connection with an erosional episode that created an unconformity or due to lateral facies changes.


It is very crucial for the hydrocarbon industries to document the lateral changes in the layer thickness. They represent thickness variations and thickness trends of a given unit. Vertical thickness iscohore with increasing dip angle and when dip angle is zero the true thickness and vertical thickness are equal. The solid lines represent the structure contours of the upper surface of the sandstone and the dash lines represent its lower surface.

Where can we find oil and natural gas?. Oil and natural gas are found in the small spaces between the grains in a sedimentary rock.

To collect data necessary for the construction of a geologic map and cross-section of. Jurassic shales of the Weald Basin: Geological oceanographers Geological oceanographers Use geophysical tools to obtain images of seafloor and its subsurface. My presentations Profile Feedback Log out.

Isopach map – Wikipedia

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