Improvements in geothermometry. Final technical report. Rev

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Alkali and alkaline earth geothermometers are useful for estimating geothermal reservoir temperatures, though a general theoretical basis has yet to be established and experimental calibration needs improvement. Equilibrium cation exchange between feldspars provided the original basis for the Na-K and Na-K-Ca geothermometers (Fournier and Truesdell, 1973), but theoretical, field and experimental evidence prove that neither equilibrium nor feldspars are necessary. Here, evidence is summarized in support of these observations, concluding that these geothermometers can be expected to have a surprisingly wide range of applicability, but that the reasons behind such broad applicability are not yet understood. Early experimental work proved ... continued below

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Pages: 64

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Potter, J.; Dibble, W.; Parks, G. & Nur, A. August 1, 1982.

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Description

Alkali and alkaline earth geothermometers are useful for estimating geothermal reservoir temperatures, though a general theoretical basis has yet to be established and experimental calibration needs improvement. Equilibrium cation exchange between feldspars provided the original basis for the Na-K and Na-K-Ca geothermometers (Fournier and Truesdell, 1973), but theoretical, field and experimental evidence prove that neither equilibrium nor feldspars are necessary. Here, evidence is summarized in support of these observations, concluding that these geothermometers can be expected to have a surprisingly wide range of applicability, but that the reasons behind such broad applicability are not yet understood. Early experimental work proved that water-rock interactions are slow at low temperatures, so experimental calibration at temperatures below 150/sup 0/ is impractical. Theoretical methods and field data were used instead for all work at low temperatures. Experimental methods were emphasized for temperatures above 150/sup 0/C, and the simplest possible solid and solution compositions were used to permit investigation of one process or question at a time. Unexpected results in experimental work prevented complete integration of the various portions of the investigation.

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Pages: 64

Notes

NTIS, PC A04/MF A01; 1.

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  • Other: DE83012181
  • Report No.: DOE/ID/12147-T1-Rev.
  • Grant Number: FC07-80ID12147
  • DOI: 10.2172/5623416 | External Link
  • Office of Scientific & Technical Information Report Number: 5623416
  • Archival Resource Key: ark:/67531/metadc1088748

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 1982

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • March 29, 2018, 12:59 p.m.

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Potter, J.; Dibble, W.; Parks, G. & Nur, A. Improvements in geothermometry. Final technical report. Rev, report, August 1, 1982; United States. (https://digital.library.unt.edu/ark:/67531/metadc1088748/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.