40Ar/39Ar thermochronology using alkali feldspars: Real thermal history or mathematical mirage of microtexture?

• Published in: Contributions to mineralogy and petrology Vol. 136; no. 1-2; p. 92
• Main Authors: Parsons, Ian, Brown, W L, Smith, J V
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer Nature B.V 01.07.1999
• Subjects: Diffusion; Geological time; Geology; Heating; Mineralogy; Petrology; Sedimentary basins; Surface temperature; Temperature

The Multiple Diffusion Domain (MDD) theory of Ar loss, based on the 40Ar/39Ar method, has been used to obtain thermal histories, over tens of millions of years, in the range 500 °C to near-surface temperatures, of alkali feldspars from slowly cooled geological environments and recovered in situ from...