All have different ages and reliefs that depend on the orogeny that formed. one orogeny is the process that forms mountain apart the collision of two tectonic plates.
Throughout geologic eras are shown as follows:
Precambrian orogeny Huron → → formation of shields
(4500 million years ago)
Paleozoic orogeny orogeny caledon → Varisara /
Hercynian (570 million years ago)
Mesozoic orogeny → no
(245 million years ago)
-Cenozoic Andean orogeny → Alpine → formation of new mountains
(makes 66 million years)
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