Many places on Mars show rocks arranged in layers.

Martian ground water probably moved hundreds of kilometers, and in the process it dissolved many minerals from the rock it passed through.

When ground water surfaces in low areas containing sediments, water evaporates in the thin atmosphere and leaves behind minerals as deposits and/or cementing agents.

On Earth, mineral-rich waters often evaporate forming large deposits of various types of salts and other minerals.

A detailed discussion of layering with many Martian examples can be found in Sedimentary Geology of Mars.