Petrology , Geochemistry , and Genesis of High-Al Tonalite and Trondhjemites of the Cornucopia Stock , Blue Mountains , Northeastern Oregon

@inproceedings{Johnson1997PetrologyG,
  title={Petrology , Geochemistry , and Genesis of High-Al Tonalite and Trondhjemites of the Cornucopia Stock , Blue Mountains , Northeastern Oregon},
  author={Kenneth Johnson and Calvin G. Barnes and Christopher A Miller},
  year={1997}
}
of Wallowa terrane crust, as the Blue Mountains terrane assemblage The Cornucopia stock, in the Blue Mountains of northeastern collided with the continental margin during Early Cretaceous time. Oregon, is a small composite intrusion comprising five distinct Results of this study suggest that deformation and crustal melting intrusive units: a hornblende biotite tonalite, a biotite trondhjemite, associated with this accretion event were not strictly limited to the and three cordierite-bearing two… CONTINUE READING