Peri-granitic hydrothermal circulations and mineralization

ISBN-13: 9783639516005 / Angielski / Miękka / 2013 / 188 str.

Khalifa Eldursi

Opis

The objective of our research is to simulate numerically hydrothermal regimes and mineralization probability (R²AI) around plutons. The first results come from simulations of some natural cases: i) Fluid flow and mineralization patterns are strongly dependent of the emplacement depth of plutons. ii) The pluton floor zone is not favorable for mineral deposition; iii) The apexes strongly modified the fluid flow and mineralization patterns; iv) The cooling phase is not the main phase of convection. Zones of ore deposits may also occur before and during the hottest phase; v) Extensional detachments faults are able to delocalize and modify fluid flows. The second results concern Tighza ore deposits. The results are: i) the probable zone of mineralization appears at the beginning of magma emplacement within the permeable zone and extends to cover the area around pluton; ii) During the cooling phase, the probable zone was reduced and restricted in the permeable zone (W1) during 0.6 Myr of cooling; iii) Application of isotopic closure temperature concept with R²AI shows that the cooling ages between mineralization in W1 veins and the intrusion are not separated by more than 0.10 Myr.

O autorze

I received my PhD Degree from CRNS-ISTO, University of Orléans, France. I am currently working as Assistant Professor at University of Benghazi, Libya. My specialty is 3D and 4D numerical simulations of geothermal energy and ore deposits triggered and formed via Hydrothermal Fluid Flows. My other interests include remote sensing and GIS techniques.