| Abstract: | Evaluation of the effects of pressure on the temperature of interlayer water loss (dehydration) by smectites under diagenetic conditions indicates that smectites are stable as hydrated phases in the deep subsurface. Hydraulic and differential pressure conditions affect dehydration differently. The temperature of dehydration increase with pore fluid pressure and interlayer water density. The temperatures of dehydration increase with pore fluid pressure and interlayer water density. The temperatures of dehydration under differential-presssure conditions are inversely related to pressure and interlayer water density. The model presented assumes the effects of pore fluid composition and 2:1 layer reactivity to be negligible. Agreement between theoretical and experimental results validate this assumption. Additional aspects of the subject are discussed. |
| Genre: | Article |
| ProdID: | 70014118 |
| Citation Author: | Colten-Bradley, Virginia, A. |
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| Citation End Page: | 1427 |
| Citation Issue: | 11 |
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| Citation Language: | English |
| Citation Larger Work Title: | American Association of Petroleum Geologists Bulletin |
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| Citation Number Of Pages: | 14 |
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| Citation Search Results Text: | ROLE OF PRESSURE IN SMECTITE DEHYDRATION - EFFECTS ON GEOPRESSURE AND SMECTITE-TO-ILLITE TRANSFORMATION.; 1987; Article; Journal; American Association of Petroleum Geologists Bulletin; Colten-Bradley, Virginia, A. |
| Citation Start Page: | 1414 |
| Citation Volume: | 71 |
| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | ROLE OF PRESSURE IN SMECTITE DEHYDRATION - EFFECTS ON GEOPRESSURE AND SMECTITE-TO-ILLITE TRANSFORMATION.; 1987; Article; Journal; American Association of Petroleum Geologists Bulletin; Colten-Bradley, Virginia, A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1987 00:00 -0600 |
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