My Wonder List

There are things that puzzle GG and this is a partial list that will be updated from time to time.

  • When did the High Plains become high?
  • Why did the High Plains become high?
  • What exactly did happen in the Mojave Desert c. 75 Ma?
  • Why did the Sierra Nevada arc shut down?
  • Related, why did it shut down from north to south?
  • If the northern Sierra only went up prior to the Eocene, why are modern rivers cutting well below those deposits?
  • If the northern Sierra have gone up significantly since the early Miocene, why do climate proxies disagree?
  • If the northern Sierra only went up prior to the Eocene, then how did one form of support (crustal root?) get replaced by another (buoyant mantle)?
  • What caused the Ancestral Rockies to rise up where they did?
  • Why did the large thrust on the south side of the Uncompahgre Plateau fail to reactivate in the Laramide?
  • How much of the Laramide foreland (basement-cored) uplifts reflect some different source of stress and how much do they reflect stresses from the Sevier belt driving shortening?
  • It seems likely there was serious slip partitioning in the Sevier; where is it?
  • There are some LANFs that seem to have really formed in the brittle crust at low angles. How?

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