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Detailed Reference Information |
Schmoker, J.W. and Gautier, D.L. (1989). Compaction of basin sediments: Modeling based on time-temperature history. Journal of Geophysical Research 94: doi: 10.1029/89JB00542. issn: 0148-0227. |
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Porosity decrease of sandstones, carbonates, and shales during burial is modeled here in terms of time-temperature exposure rather than in terms of depth. Loss of porosity (ϕ) in the subsurface is represented by a power function. ϕ=A(M)B, where A and B are constants and M is a measure of integrated time-temperature history. Regression lines of carbonate and sandstone porosity upon Lopatin's time-temperature index of thermal maturity (TTI) generally fall within a rather narrow envelope whose axis is approximated by ϕ=30(TTI)-0.33. This equation is useful for regional modeling of carbonate and sandstone compaction. Dependence of porosity upon integrated time-temperature history implies that basin sediments are not in equilibrium but compact through geologic time. Calculations show that subsidence resulting from the loss of porosity with increasing time-temperature exposure (as opposed to deeper burial) can produce a second-stage, passively formed basin containing many hundreds of meters of sediments. ¿ American Geophysical Union 1989 |
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Abstract |
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Keywords
Physical Properties of Rocks, Permeability and porosity, Marine Geology and Geophysics, Plate tectonics, Mineralogy and Petrology, Sedimentary petrology |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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