What major types of rocks are categorized under the Superjacent Series?

The Superjacent Series refers to a stratigraphic sequence that is found overlying older rock formations within a geologic setting. Specifically, in this context, the major types of rocks categorized under the Superjacent Series would be those that are younger than a significant orogenic event, in this case, the Nevadan Orogeny.

The Nevadan Orogeny was a prominent mountain-building event that occurred during the Late Jurassic to Early Cretaceous periods. Consequently, rocks that formed after this orogenic event would be classified as Superjacent, as they appear above the older rock formations that were already in place prior to the orogeny.

Choosing the option that states "rocks younger than the Nevadan Orogeny" correctly represents the concept of the Superjacent Series by emphasizing that these rocks are indeed formed after significant geological developments linked to the orogeny. This understanding aligns with the principles of stratigraphy, where younger strata are specifically identified as superjacent to older formations.