Energy in South Australia and trap in the deeper heat. Due to the low permeability of granite, the hot rocks must undergo hydraulic fracturing and be stimulated to allow a flow of water through the system to produce energy. This heat is slowly conducted to shallower rocks near the surface. Petratherm propose developing the geothermal energy in the more permeable sedimentary rocks that overlay the hot granite, a process called Heat Exchange Within Insulator (HEWI). While somewhat cooler, in many cases they do not require hydraulic fracturing. It is estimated that one percent of geothermal energy shallower than five kilometres below the earth's surface
Hot Rocks 1964–1971 Hot Rocks 1964–1971 Hot Rocks 1964–1971 is a compilation album by the Rolling Stones released by London Records in December 1971. It became the Rolling Stones' best-selling release of their career and an enduring and popular retrospective. While the album carries most of the band's biggest hits during their first decade, it does drop a few of them to include standout album tracks such as "Play With Fire", "Under My Thumb" and "Gimme Shelter" giving listeners a more well-rounded impression of the Rolling Stones' music in this era. "Hot Rocks 1964–1971" peaked at No. 4 on the Billboard 200 album