The false blue and red colors represent invisible magnetic fields in the Martian crust that point in opposite directions. The magnetic fields appear to be organized in bands, with adjacent bands pointing in opposite directions, giving these stripes a striking similarity to patterns seen in the Earth's crust at the mid-oceanic ridges. Along the divide where material cools to form new crust, iron-rich minerals preserve a record of the the magnetic field that prevails on the planet at the time. Earth's magnetic field reverses its polarity every million or so years, causing the alternating magnetic signature. The discovery of banded magnetic patterns on Mars suggests a similar process at work.
Some scientists think that early life on Earth arose in such deep sea hot spots.
It's really too soon to say. Experts stress that while magnetic bands on Mars indicate past crustal spreading, they do not necessarily prove the existence of oceans or undersea vents. Furthermore, the tectonic activity seems to have ended billions of years ago. Life may have begun on early Mars and then faded away as tectonic activity subsided. These important questions can only be answered with additional research and, perhaps, trips to Mars to investigate conditions up close.