Abnormal pressures as hydrodynamic phenomena

American Journal of Science



So-called abnormal pressures, subsurface fluid pressures significantly higher or lower than hydrostatic, have excited speculation about their origin since subsurface exploration first encountered them. Two distinct conceptual models for abnormal pressures have gained currency among earth scientists. The static model sees abnormal pressures generally as relict features preserved by a virtual absence of fluid flow over geologic time. The hydrodynamic model instead envisions abnormal pressures as phenomena in which flow usually plays an important role. This paper develops the theoretical framework for abnormal pressures as hydrodynamic phenomena, shows that it explains the manifold occurrences of abnormal pressures, and examines the implications of this approach.

Publication type Article
Publication Subtype Journal Article
Title Abnormal pressures as hydrodynamic phenomena
Series title American Journal of Science
DOI 10.2475/ajs.295.6.742
Volume 295
Issue 6
Year Published 1995
Language English
Publisher American Journal of Science
Description 45 p.
First page 742
Last page 786
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