Geophysics lecture 09: Isopach maps and top of formation maps.

This video lecture series on Geophysics (Undergraduate course GY 305) was made by Dr. Douglas W. Haywick from the Department of Earth Sciences at University of South Alabama.


A contour line joining points of equal thickness in a rock layer.

Top of formation map

A map showing the depth from the surface to the formation top. They reflect the original depositional toposgraphy.

See also