Juan, One reference is: Somerton, W.H., Some Thermal Charateristics of Porous Rocks, Trans. AIME, 213, pp. 61-64, 1958. Steve Brooks Golder Associates Tucson, Arizona -----Original Message----- From: Juan Mateo Hernández [mailto:[log in to unmask]] Sent: Tuesday, January 16, 2001 7:19 PM To: [log in to unmask] Subject: information about the rock heat properties Dear All Does anybody have information about the rock heat properties(heat capacity and heat conductivity) . best regard Juan Mateo