Physicochemical basis of the Na-K-Ca geothermometer Metadata

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Title

  • Main Title Physicochemical basis of the Na-K-Ca geothermometer

Creator

  • Author: Janecky, D. R.
    Creator Type: Personal
  • Author: Charles, R. W.
    Creator Type: Personal
  • Author: Bayhurst, Gregory K.
    Creator Type: Personal
  • Author: Benjamin, T. M.
    Creator Type: Personal

Publisher

  • Name: Los Alamos National Laboratory
    Place of Publication: New Mexico

Date

  • Creation: 1986-08-01

Language

  • English

Description

  • Content Description: Regular changes in solution composition were observed experimentally during granite reaction with dilute NaCl (+CaCl/sub 2/) solutions; these changes closely follow the empirical Na-K-Ca geothermometer relationship. Initial minerals forming the granite (quartz, plagioclase, K-feldspar, and biotite) were etched by the reactions. Alteration phases formed include calcium-zeolite at <300/sup 0/C, feldspar overgrowths at >300/sup 0/C, and minor amounts of clay and calcsilicate at all temperatures. Amphibole overgrowths were also found at 340/sup 0/C. Quartz is near saturation in all experiments, and preliminary calculations of aqueous species distributions and mineral affinities indicate that the solutions achieve super-saturation with feldspars as the temperature increase. A consistent variation attributable to pH differences was observed in the empirical geothermometer relationship for all experimental data. At 340/sup 0/C, the experimental solutions appear to have deviated slightly from the empirical Na-K-Ca relationship. Such deviations may also be found in natural systems that attain such temperatures.
  • Physical Description: 11 pages

Subject

  • Keyword: Granites
  • Keyword: Elements
  • Keyword: Rocks
  • Keyword: Potassium
  • Keyword: Alkali Metal Compounds
  • Keyword: Geothermal Legacy
  • Keyword: Calcium Halides
  • Keyword: Dispersions
  • STI Subject Categories: 15 Geothermal Energy
  • Keyword: Calcium Chlorides
  • STI Subject Categories: 580400 -- Geochemistry-- (-1989)
  • Keyword: Plutonic Rocks
  • Keyword: Hydrothermal Alteration
  • STI Subject Categories: 052002 -- Nuclear Fuels-- Waste Disposal & Storage
  • Keyword: Chlorides
  • Keyword: Chemical Composition
  • Keyword: Geothermometers
  • Keyword: Sodium Compounds
  • STI Subject Categories: 58 Geosciences
  • Keyword: Thermometers Geothermal Legacy 152003* -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
  • Keyword: Calcium Compounds
  • Keyword: Calcium
  • Keyword: Sodium Chlorides
  • STI Subject Categories: 12 Management Of Radioactive And Non-Radioactive Wastes From Nuclear Facilities
  • Keyword: Alkaline Earth Metal Compounds
  • Keyword: Metals
  • Keyword: Halogen Compounds
  • Keyword: Aqueous Solutions
  • Keyword: Solutions
  • Keyword: Alkali Metals
  • Keyword: Igneous Rocks
  • Keyword: Chlorine Compounds
  • Keyword: Alkaline Earth Metals
  • Keyword: Halides
  • Keyword: Sodium
  • Keyword: Rock-Fluid Interactions
  • Keyword: Measuring Instruments
  • Keyword: Temperature Dependence
  • Keyword: Mixtures

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE87000805
  • Report No.: LA-10806-MS
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/5188355
  • Office of Scientific & Technical Information Report Number: 5188355
  • Archival Resource Key: ark:/67531/metadc1053860

Note

  • Display Note: NTIS, PC A02/MF A01.
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