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Walker et al., 2019) that require abandoning   northern Cordillera: Lithosphere, v. 8,    composite terrane and the paleo-Alaskan
          existing hypotheses and exploring funda-  p. 451–462, https://doi.org/10.1130/L525.1.  margin: Lithosphere, v. 5, p. 575–594, https://
          mentally different interpretations.  Dickinson, W.R., 1974, Plate tectonics and   doi.org/10.1130/L310.1.
                                               sedimentation in Dickinson, W.R., ed.,   Johnston, S.T., 2008, The Cordilleran ribbon
                                               Tectonics and Sedimentation: Society of   continent of North America: Annual Review of
          ACKNOWLEDGMENTS                      Economic Paleontologists and Mineralogists,   Earth and Planetary Sciences, v. 36, p. 495–530,
            We acknowledge the pioneering work of   v. 22, p. 1–27.               https://doi.org/10.1146/annurev.earth.36.031207
          geologists in Canada and Alaska who attempted   Dusel-Bacon, C., Hopkins, M.J., Mortensen, J.K.,   .124331.
          geologic syntheses of this complicated region.    Dashevsky, S.S., Bressler, J.R., and Day, W.C.,   Kapp, P.A., and Gehrels, G.E., 1998, Detrital
          In addition, we acknowledge the mapping and   2006, Paleozoic tectonic and metallogenic   zircon constraints on the tectonic evolution of
          analyses conducted in this area by our students.   evolution of the pericratonic rocks of   the Gravina belt, southeastern Alaska:
          Much of our work has been funded by the National   east-central Alaska and adjacent Yukon, in   Canadian Journal of Earth Sciences, v. 35,
          Science Foundation, including EAR-0809608   Colpron, M., and Nelson, J.L., eds., Paleozoic   p. 253–268.
          (Amato), EAR-1818509 (Gehrels), EAR-0809609   Evolution and Metallogeny of Pericratonic   Labrado, A., Pavlis, T.L., Amato, J.M., and Day,
          (Pavlis), EAR-1550034 (Ridgway), EAR-1828737   Terranes at the Ancient Pacific Margin of North   E.M., 2015, The tectonic significance of the
          (Roeske), EAR-1450687 (Trop), along with grants   America, Canadian and Alaskan Cordillera:   Early Cretaceous forearc-metamorphic
          to our students from GSA and the Alaska   Geological Association of Canada Special   assemblage in south-central Alaska based on
          Geological Society.                  Paper 45, p. 25–74.                detrital zircon dating of sedimentary
                                             Engebretson, D.C., Cox, A., and Gordon, R.G.,   protoliths: Canadian Journal of Earth
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