How did the Mexican Plateau form between the Sierra Madre Occidental and Sierra Madre Oriental?

The Mexican Plateau was formed primarily through the uplift and folding of Mesozoic Era strata, a process that occurred contemporaneously with the rise of the Rocky Mountains.1

Following a long period of weathering and erosion, the region experienced significant geological changes during the early Cenozoic Era, characterized by massive outpourings of lava. Subsequently, the large plateau block was uplifted, with the displacement being more pronounced in the south than in the north. The margins of this plateau were later dissected by erosion, resulting in the rugged, distinct landscapes of the Sierra Madre Occidental and the Sierra Madre Oriental.1