stripes
Occurrence number:
136-10-002
Country:
Russia
Region:
Kamchatka-Anadyr
Location:
Longitude: 169.42, Latitude: 61.07
Carbonatite:
No
Within siliceous volcanogenic rocks of upper Cretaceous to Palaeogene age basalts occur with compositions varying from normal alkaline to weakly alkaline. The former comprise about one-third of the sequence and include analcime-bearing varieties. Bodies of essexite gabbro have been discovered which contain plagioclase (labradorite-bytownite), clinopyroxene, olivine and analcime.
Age:
Assumed to be Quaternary.
References:
LYCHAGIN, P.P. 1982. Alkali basic rocks in the North-East of the USSR. Pacific Geology 6: 85-93.
RUDICH, K.N. and USTIYEV, E.K. 1966. The centres of Quaternary volcanism in the Mesozoic areas of the North-East of Asia. In Volcanic and volcano-plutonic formations. 93-114. Nauka, Moscow.
Location: