40 Ar/39/Ar dating and cooling history of the Pangeon granitoids, Rhodope Massif (Eastern Macedonia, Greece)

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40 Ar/39/Ar dating and cooling history of the Pangeon granitoids, Rhodope Massif (Eastern Macedonia, Greece) (EN)

ELEFTHERIADIS, G.
FRANK, W.
PETRAKAKIS, K.

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article (EN)

2001-01-01


The Pangeon granitoids are distinguished into two pétrographie types with sharp contacts: (a) heterogranular, medium- to coarse-grained, hornblende+biotite- bearing porphyritic tonalités and granodiorites (PTG), and, (b) equigranular, medium-grained, biotite±muscovite-bearing granodiorites and granites (MGG). Dark-coloured, medium-grained monzodioritic enclaves occur in PTG rocks. Hornblende 40Ar/39Ar spectra from the PTG rocks yielded cooling ages of 21.7±0.5 Ma to 18.8±0.6 Ma. With the exception one sample, the corresponding hornblende ages from enclaves coincide well with the above ages. The age of 21.7±0.5 Ma is considered as the lower limit for the PTG rocks emplacement. Muscoviteplateau ages of c. 15.7±0.5 Ma and total gas biotite ages of 15.2±0.4 Ma to 13.8±0.5 Ma from the studied rocks, constrain the cooling history of the Pangeon granitoids (with some local variations) in the range 430 - 300Ί C. (EN)


40Ar/39Ar dating (EN)
Rhodope massif (EN)
cooling history (EN)
Pangeon granitoids (EN)

Δελτίο της Ελληνικής Γεωλογικής Εταιρίας

English

Geological Society of Greece (EN)


0438-9557
2529-1718
Δελτίο της Ελληνικής Γεωλογικής Εταιρείας; Τόμ. 34 Αρ. 3 (2001): 9o διεθνές Συνέδριο της ΕΓΕ; 911-916 (EL)
Bulletin of the Geological Society of Greece; Vol. 34 No. 3 (2001): 9th International Conference of the Geological Society of Greece; 911-916 (EN)

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Copyright (c) 2018 G. ELEFTHERIADIS, W. FRANK, K. PETRAKAKIS (EN)




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