These conditions resulted in the creation of silica rocks that are sponge-like structures. Such structures have been found all over the earth and coincide with early appearance and dating of life on the planet.
Recently the Spirit Rover photographed pieces of rocks that have a striking resemblance to silica rocks back on earth.
"Although fully abiotic processes are not ruled out for the Martian silica structures, they satisfy an a priori definition of potential biosignatures," the researchers wrote in the study.
But scientists have also acknowledged that the rocks may have formed during the early days of the planet. A theory of the scientists' state that during the formation of Mars the extreme heat may have remained internally and led to the formation of the rocks.
"Such conditions provide a better environmental analog for Mars than those of Yellowstone National Park (USA) and other well-known geothermal sites on Earth," suggested Ruff and Farmer. "Our results demonstrate that more Mars-like conditions of El Tatio produce unique deposits, including biomediated silica structures, with characteristics that compare favorably with the Home Plate silica outcrops. The similarities raise the possibility that the Martian silica structures formed in a comparable manner."
This further evidence only goes a step further supporting the theory that Mars can either hold life or has helped life before. It is in the region of the sun where scientists believe is capable of holding life.