Historical Geology
After the Antler orogeny, sedimentation resumed along the passive Cordilleran margin leading to the erosion and burial of the Antler Highlands. Subduction complexes were overlain eastward to form the Golconda allochthons. Subduction complexes continued to move toward the Cordilleran continental margin in response to slab rollback beneath a system of active and remnant intraoceanic island arcs now exposed in the eastern Klamath Mountains and northern Sierra Nevada. The offshore island-arc system faced southeast toward the continental margin. The deformed Havallah sequence was thrust over the Antler overlap sequence.
Read more about this topic: Sonoma Orogeny
Famous quotes containing the word historical:
“By contrast with history, evolution is an unconscious process. Another, and perhaps a better way of putting it would be to say that evolution is a natural process, history a human one.... Insofar as we treat man as a part of nature—for instance in a biological survey of evolution—we are precisely not treating him as a historical being. As a historically developing being, he is set over against nature, both as a knower and as a doer.”
—Owen Barfield (b. 1898)