Alkaline Rocks and Carbonatites of the World

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

Jalua

stripes

Occurrence number: 
052-00-002
Country: 
Eritrea
Location: 
Longitude: 39.82, Latitude: 15.05
Carbonatite: 
No

The northern basalt lava field of the Alid volcano (No. 3) is limited at its northern margin by the products of the silicic volcano of Jalua. This is a strato-volcano with a large central volcanotectonic depression open to the sea. The silicic rocks of the volcano are apparently peralkaline. There is fumarolic activity on the western flanks.

References: 

BARBERI, F., CHEDEVILLE, E., FAURE, H., GIGLIA, G., MARINELLI, G., SANTACROCE, R., TAZIEFF, H. and VARET, J. 1973. Geology of Northern Afar (Ethiopia) (with a geological map, scale 1:500,000). Revue de Geographie Physique et de Geologie Dynamique, Paris, 15: 443-89.

Map: 
Fig. 3_66 Jalua and Alid (taken from 1:500,000 geological map of Northern Afar. Barberi et al., 1973).
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith