Alkaline Rocks and Carbonatites of the World

Setup during HiTech AlkCarb: an online database of alkaline rock and carbonatite occurrences

Arukty

stripes

Occurrence number: 
136-08-017
Country: 
Russia
Region: 
East Tuva
Location: 
Longitude: 96.48, Latitude: 50.62
Carbonatite: 
No

This intrusion, covering approximately 3 km2, cuts Upper Proterozoic dolomitic marbles and Lower Palaeozoic gabbro-diorites and granites. The massif includes nepheline syenites containing xenoliths of country rock gabbro-diorites and dolomitic marble.

Age: 
K-Ar on K-feldspar gave 244±10 Ma, on biotite 226±9 Ma and on nepheline 232±9 Ma (Yashina and Borisevich, 1966). Pb from zircon gave 400±40 Ma (Zykov et al., 1961).
References: 

YASHINA, R.M. 1963. On the contact reactions of the nepheline syenites and xenoliths of dolomite-bearing marbles (Arukty alkaline massive from southeast Tuva). In: G.A. Sokolov (ed) Physico-chemical problems of the formation of rocks, 2: 117-28. USSR Academy of Sciences, Moscow.
YASHINA, R.M. and BORISEVICH, I.V. 1966. The age of the alkaline rocks of East Tuva. InG.D. Afanas'ev (ed) Dating of the tectono-magmatic cycles and metallogenic stages. 326-36. Nauka, Moscow.
ZYKOV, S.I., STUPNIKOVA, N.I., PAVLENKO, A.S., TUGARINOV, A.I. and ORLOVA M.P. 1961. The age of the intrusions from East Tuva and the Enisei Range. Geokhimiya. Akademiya Nauk SSSR, Moskva, 7: 547-60.

Location: 
All locations > Europe > Russia > East Tuva
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