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
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Author: Janecky, D. R.Creator Type: Personal
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Author: Charles, R. W.Creator Type: Personal
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Author: Bayhurst, Gregory K.Creator Type: Personal
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Author: Benjamin, T. M.Creator Type: Personal
Publisher
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Name: Los Alamos National LaboratoryPlace 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
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Name: Office of Scientific & Technical Information Technical ReportsCode: OSTI
Institution
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Name: UNT Libraries Government Documents DepartmentCode: 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.