Understanding K-feldspar 40Ar/39Ar data: Reconciling models, methods and microtextures

Journal of the Geological Society

Volumn 164, Issue 5, 2007, Pages 941-944

  McLaren, Sandra ^a   Dunlap, W James ^a   Powell, Roger ^b  

^a AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

^b UNIVERSITY OF MELBOURNE   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

ARGON-ARGON DATING; DIFFUSION; DOMAIN STRUCTURE; FELDSPAR; RECRYSTALLIZATION; TEXTURE;

EID: 34548665489     PISSN: 00167649     EISSN: None     Source Type: Journal    
DOI: 10.1144/0016-76492006-180     Document Type: Article

References (15)

1. 39Ar analysis of perthite microtextures and fluid inclusions in alkali feldspars from the Klokken Syenite, South Greenland. Earth and Planetary Science Letters, 109, 147-167.
2. DODSON, M.H. 1976. Kinetic processes and thermal history of slowly cooling solids. Nature, 259, 551-553.
3. DUNLAP, W.J. & FOSSEN, H. 1998. Early Palaeozoic orogenic collapse, tectonic stability and Late Paleozoic continental rifting revealed through thermochronology of K-feldspars, Southern Norway. Tectonics, 17, 604-620.
4. FITZ GERALD, J.D. & HARRISON, T.M. 1993. Argon diffusion domains in K-feldspar I: Microstructures in MH-10. Contributions to Mineralogy and Petrology, 113, 367-380.
5. LEE, J.K.W. 1995. Multipath diffusion in geochronology. Contributions to Mineralogy and Petrology, 120, 60-82.
6. 39Ar thermochronometry for slowly cooled samples having a distribution of diffusion domain sizes. Journal of Geophysical Research, 94, 17917-17935.
7. 39Ar released during step-heating. Journal of Geophysical Research, 96, 2057-2069.
8. 39Ar step heating results: I. Significance of activation energy determinations. Geochimica et Cosmochimica Acta, 61, 3171-3192.
9. 39Ar step-heating results: II, Relevance of laboratory argon diffusion properties to nature. Geochimica et Cosmochimica Acta, 66, 1237-1255.
10. PARSONS, I. & BECKER, S.M. 1987. Layering, compaction and post-magmatic processes in the Klokken intrusion. In: PARSONS, I. (ed.) Origins of Igneous Layering. Reidel, Dordrecht, 29-92.
11. PARSONS, I., REX, D.C., GUISE, P. & HALLIDAY, A.N. 1988. Argon-loss by alkali feldspars. Geochimica et Cosmochimica Acta, 53, 1097-1112.
12. 39Ar thermochronology using alkali feldspars: real thermal history or mathematical mirage of microtexture? Contributions to Mineralogy and Petrology, 136, 92-110.
13. 39Ar analysis of a single K-feldspar sample. Earth and Planetary Science Letters, 105, 266-278.
14. 39Ar age spectra in K-feldspar and evidence for Cretaceous authigenesis in the Fountain Formation near Eldorado Springs, Colorado. Earth and Planetary Science Letters, 174, 99-111.
15. WORDEN, R.H., WALKER, F.D.L., PARSONS, I. & BROWN, W.L. 1990. Development of microporosity, diffusion channels and deuteric coarsening in perthitic alkali feldspars. Contributions to Mineralogy and Petrology, 104, 507-515.