Would that there were such identifyable structures on the surface of Mars.

Instead, we find things like this:

or

this:

which are found in extravagant abundance in many lowland areas. These two examples are in Acidalia, but you'll find them in Utopia on the opposite side of the planet.

They could be some sort of volcanic formation on which a rime of frost has been deposited. Or maybe not.

Is there any way to remotely determine the origin of such structures with any certainty?

Further, if hotsprings (and what is "hot" under the circumstances? Could room temperature be considered "hot" on Mars?) are -- or were -- active on Mars, we need to consider not only how they would form and what they would look like, we should also think about how they would erode, and how quickly erosion would proceed... what would the eroded product of a hot spring look like after a season (say) of sublimation/melt or whatever?

Cheers