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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 77 (1993)

Issue: 2. (February)

First Page: 276

Last Page: 279

Title: Fractional Isostatic Mantle Compensation of Carbonate Buildups: GEOLOGIC NOTE

Author(s): I. Lerche (2), M. A. Perlmutter (3)


This paper provides a simple procedure for estimating the fraction of the mantle response that is actually isostatic by using the theoretical isostatic mantle compensation of carbonate buildups under conditions of constant sea level. The nonisostatic component must then be related to either a tectonic response (such as rigidity), or to sea level variations with time, or to conditions during carbonate deposition and later carbonate evolution by porosity variations that were nonisostatic. This straightforward evaluation of the nonisostatic component then enables geological interpretations and stratigraphic models to be made within a partially compensated framework.

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