Technical briefing by Karda One This brief is a review of the available public studies and literature on Singapore’s subsurface. It explores what is missing for a fuller geothermal baseline, what it means for further resource exploration efforts and proposes some next steps towards de-risking Geothermal development. 1. What we know 1.1 Tectonic and seismic setting Singapore lies on the stable Sunda Shelf, well away from active plate boundaries. Its bedrock is dominated by Tri