Alkaline Rocks and Carbonatites of the World

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

Jebel Oda

stripes

Occurrence number: 
152-00-003
Country: 
South Sudan
Location: 
Longitude: 30.52, Latitude: 5.18
Carbonatite: 
No

A granite intrusion is listed by Vail (1978) and shown on the accompanying 1:2,000,000 geological map. No petrographical details are given but the granite is probably peralkaline.

Age: 
A K-Ar determination on hornblende from the complex gave 591±12 Ma (Muller-Sohnius and Horn, 1994).
References: 

MULLER-SOHNIUS, D and HORN, P. 1994. K-Ar dating of ring complexes and fault systems in Northern Kordofan, Sudan: evidence for independent magmatic and tectonic activity. Geologische Rundschau, 83: 604-13.VAIL. J.R. 1978. Outline of the geology and mineral deposits of the Democratic Republic of the Sudan and adjacent areas. Overseas Geology and Mineral Resources, Institute of Geological Sciences, 49: 1-66.

Map: 
Fig. 3_293 Distribution of occurrences 152-00-001 - 152-00-011 in South Sudan (based principally on various maps in Hunting Geology and Geophysics, 1980).
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith