Table 1 Rock units, lithology, and the corresponding ages in the WA area.
Age | Rock units | Lithology |
|---|---|---|
Late proterozoic | Meta-sedimentary rocks group | sericite biotite gneissic rocks (msp), sericite-rich schist (mss), talc, ankerite, and marble (mm) |
Calc alkaline Volcanics and sub-volcanics group, | Intermediate to base volcanic rocks (VI-B), intermediate sub-volcanic chlorite-rich rocks (VI), intermediate sub-volcanic schist and tuffs rich in chlorite (MVIC), intermediate lava, tuffs, and agglomerate rocks (MVT), intermediate volcanic rocks rich in sericite (MVIS), undifferentiated intermediate volcanic sub-volcanic schist, and tuffs (MVI) | |
Ophiolite nappe /mélange group | Serpentine and talc (osta) at Jabal Shillman, Talc and ankerite (ota) at Wadi Haymur Ankerite, Quartz carbonate, and magnesian schist (oaq) | |
The young calc-alkaline volcanic sub-volcanic group includes | Rhyolite flows, tuffs and microgranite (mvr) | |
Syn to late tectonic granitoid (Older granites) | Quartz diorite (mgb), (mdq), and tonalite (mgt) | |
Post-tectonic mafic ultra-mafic intrusions | Gabbro (gbp), and Gabbro dolerite (gbh) | |
Post-tectonic potassic calc-alkaline granitoid (Younger granites) | Tonalite (gt), at Umm Ashira, Wadi Murrah, Wadi Shilman Mozogranite (gm), at Jabal Arakah,Rod Abu Nsir, Jabal Filat and Microgranite at Jabal Abu Sayal (qf) | |
Paleozoic, Carboniferous, | Cross-bedded sandstone (Cjf), | |
Mesozoic, Cretaceous, | Cross-bedded sandstone (Ksl), and kaolinitic sandstone (Kbj) at Wadi Jabjabah | |
Cenozoic-, Tertiary, | altered sub-volcanic dacite with pyrite gold mineralisation (Tsvd), (Umm Qurayat) | |
Quaternary | wadi alluvium (Qa) |
