what can we learn about canyons on mars through similar geologic forms on earth?

Is the geology of mars diferent of earth?

Do you think necessary to keep intact a geological formation in a possible terraforming of Mars? What would be the chosen one?

Is there any type of geologic activity on Mars today-- seismic, plate tectonics, hot spot volcanoes, etc?

Is the structures of Mars similar or different for our earth planet?

I'm fascinated with PIA16025: "Rocket Thrusters Expose Bedrock." It seems the thrusters worked like a leaf blower, or duster tool. Was this effect anticipated as an experiment with scientific value?

Has there ever been plate tectonics on Mars?

Why is so important Hadley Crater to provide information about the Martian geology?

Are there different types of craters?

Given the evidence of past volcanic activity, could there be precious metals or gemstones on Mars?