Clay minerals in carbonate reservoir rocks and their significance in porosity studies |
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| Authors: | Koichi Aoyagi George V. Chilingarian |
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| Affiliation: | 1. Department of Geology, Dalhousie University, Halifax, Nova Scotia Canada;2. Department of Petroleum Engineering, University of Southern California, Los Angeles, Calif. U.S.A. |
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| Abstract: | The writers have been studying the origin of porosity in the Neogene calcareous rocks of Akita, Japan, and in the Mississippian Windsor Group carbonate rocks of Nova Scotia, Canada. The former consist mainly of dolomitic clayey-siliceous marls, derived mainly from opaline skeletal debris of microscopic organisms. These marls were deposited in bathyal to inner-neritic environments. The carbonate rocks of Windsor Group, which include both dolostones and limestones, originated from biogenic carbonate debris and were deposited in inner-shelf to shoal environments. |
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