The Arabian Shield in Saudi Arabia is a vast expanse of Precambrian rock formations, hosting significant economic deposits of gold, base metals, and a multitude of other strategic elements. A recent geological mapping project, undertaken by SRK Exploration in collaboration with Al Masane Al Kobra Mining Company (AMAK), sheds light on the geological makeup of this prospective region.
The mineralisation within the ANS is understood to be a consequence of a complex geological history. Initially formed in an ancient oceanic setting, these mineral deposits were subsequently subjected to tectonic events and later fluid influx, resulting in a diverse range of mineral assemblages. Understanding this geological narrative is paramount for effectively targeting and exploiting these valuable deposits.
In 2023, SRK Exploration embarked on a carefully planned geological and regolith mapping project encompassing six prospects, totalling 550 square kilometres, across central and southern parts of the Shield. This project builds upon a prior remote sensing study conducted in 2022 and aimed to not only delineate known mineral occurrences, but also to identify potential areas of concealed mineralisation.
Employing a comprehensive approach, a team of SRK Exploration and AMAK geologists meticulously compiled and analysed all available historical geological data. Historical and new remote sensing targets were then validated through rigorous ground reconnaissance and outcrop sample collection. SRK EX collected over 360 whole rock samples for geochemical assay and more than 30 petrological samples.
To build a deeper understanding of the subsurface geology, SRK Exploration geologists also visited the Saudi Geological Survey (SGS) in Jeddah and relogged over 2,000m of historical drill core from one of the prospects.
The project culminated in the creation of detailed geological and regolith maps at 1:10,000 for each prospect. These maps serve as a vital exploration tool, clearly outlining prospective targets and informing exploration strategies. Additionally, comprehensive technical reports were written for each license area, detailing the identified targets and proposing future exploration activities.
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