More a curiosity than an economically important resource in the mapped southern part of the Trieste-Komen plateau is the flowstone that fills karst cavities and cracks and the Komen and Tomaj limestones.
Bolj med zanimivosti kot pa med ekonomsko pomembne surovine uvrščamo na raziskanem južnem delu Tržaško-komenske planote sigo, ki zapolnjuje kraške jame in Komenski ter Tomajski apnenec.