A Review and Evaluation of Specific Heat Capacities of Rocks,Minerals, and Subsurface Fluids. Part 1: Minerals and Nonporous Rocks |
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| Authors: | Waples Douglas W Waples Jacob S |
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| Institution: | (1) Consultant, 9299 William Cody Drive, Evergreen, CO 80439, USA;(2) Golder Associates, 44 Union Boulevard, Suite 300, Lakewood, CO 80228, USA |
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| Abstract: | Heat capacities of the rocks within a sedimentary basin can significantly influence geothermal gradients if sedimentation or erosion is rapid. This paper provides data on specific heat capacities of minerals and nonporous rocks at 20°C, derives equations for calculating specific heat capacities of minerals and nonporous rocks at temperatures between 0°C and 1200°C, and shows that pressure effects on heat capacities of solids can be neglected. It derives an equation for estimating specific heat capacity of any mineral or nonporous rock as a function of density. Finally, it shows how to calculate the specific heat capacity of any mixture of solid materials. A companion paper discusses specific heat capacities of the fluids in pore spaces of rocks and of fluid-filled porous rocks. The data for minerals and rocks provided herein can be incorporated directly into existing modeling software by users. However, the temperature-dependent equations would have to be incorporated by software developers. |
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| Keywords: | Basin modeling thermal capacity specific heat capacity |
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