stripes
Occurrence number:
155-00-048
Country:
Sudan
Region:
Bayuda Desert intrusions
Location:
Longitude: 33.33, Latitude: 17.63
Carbonatite:
No
This volcanic field contains more than 300 centres spread over an area of about 2500 km2. It includes many plugs standing on a plain of Nubian Sandstone, while lavas also cover a considerable area, particularly in the west. There are no pyroclastic rocks. The rocks comprise olivine, plagioclase, titanaugite, opaques and a little secondary carbonate. The chemistry indicates they are tephrites, basanites and phonotephrites.
Age:
K-Ar determinations indicate ages in the range 69-70 Ma (Barth and Meinhold, 1979).
References:
Barth and Meinhold, 1979. BARTH, H. and MEINHOLD, K.-D. 1979. Mineral prospecting in the Bayuda Desert. Part 1, Volume A. Investigation of mineral potential. Technical Report Sudanese-German Exploration Project. Hannover (Bundesanstalt fur Geowissenschaften und Rohstoffe). 336 pp. (unpublished)
Location: