HOT SPOT ACTIVITY AND THEIR POSSIBLE IMPLICATIONS ON HYDROCARBON RESOURCES IN EGYPT | ||
| Journal of Egyptian Geophysical Society | ||
| Volume 12, Issue 1, 2014, Pages 79-87 PDF (2.35 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jegs.2014.385014 | ||
| Author | ||
| S.M.M. Hanafy | ||
| Nuclear Materials Authority, P. O. Box 530 El Maadi - Cairo, Egypt. | ||
| Abstract | ||
| The hot spot activity was responsible for emplacement of alkalic rocks, for tectonic adjustments and for increased geothermal gradient that created favorable ore-concentrating environments in the basement rocks. The motion of the African plate since the Precambrian times has been traced from hot spot tracks. Evidence has been put forward regarding the mantle and crustal effects of hot spot both on geoid departures from reference ellipsoid and the recently published GRACE gravity. SRTM and remote imagery data may also provide helpful information. This data integrates well with the geochronology of the anorogenic alkalic rocks dates. The effect of these mantle plumes, over which Egypt has been drifting for the past 593 ± 16 m. y. of African plate movement, suggests that the hot spot activity was responsible for emplacement the Late Precambrian / Cambrian ring complex track. This track is an excellent example of the type of composite alkaline igneous ring complexes associated with continental rifts worldwide. In addition, three tracks of Post Precambrian hot spot activity in the southeastern desert were previously discussed. Igneous activity in potential hydrocarbon systems can have both positive and negative impacts, although much of the literature on this subject has emphasized the negative influences. Hydrocarbons located in and around igneous rocks should be considered in any systematic exploration strategy. Igneous activity can produce distinctive source rock, maturation and migration pathways, traps and reservoir rocks | ||
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