stripes
Occurrence number:
162-00-015
Country:
Tajikistan
Location:
Longitude: 74.95, Latitude: 37.8
Carbonatite:
No
This southeastern group of pipes is situated in the region of the Dun-Keldik and Agad'an-D'ilga Rivers.The pipes are generally 100-150x30-70 m and comprise fergusite porphyry and alkaline syenite porphyries; they often contain country rock xenoliths.
Age:
K-Ar on leucite and sanidine gave 14-23 Ma.
References:
DMITRIEV, E.A. 1976. Cainozoic potassic alkaline rocks of East Pamir. Donish, Dushanbe. 170 pp.
Location: