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Show CHAPTER 4 BIOSTRATIGRAPHIC ASPECTS OF THE CRETACEOUS-TERTIARY (K-T) BOUNDARY INTERVAL EMERY AT NORTH HORN MOUNTAIN, COUNTY, UTAH1 4.1. Abstract Because it is sections may be thought spanning an the an attempt complete Cretaceous-Tertiary (K-T) boundary, important key interval in Utah. This to contain one of the most to study employed physical stratigraphy containing the K-T in central Utah occurs and boundary of the North Horn Formation at North Horn Mountain, boundary North Horn Mountain unlocking the chronostratigraphic puzzles to define the interval The K- T North American within paleontology at the has not stratigraphic yet been precisely placed, interval of a it can type section a prominent be recognized coal sequence Although within few meters in the North Horn Formation in this the basis of fossil remains of dinosaurs, in Emery County, Utah. in the 403-m thick North Horn Formation at North Horn Mountain. boundary of the K-T charophytes, ostracods, and the a area on pollen. 1An early version of this chapter already has been published (Difley, R. L., and A. A. Ekdale, 1999, Biostratigraphic aspects of the Cretaceous-Tertiary (KT) boundary interval at North Horn Mountain, Emery County, Utah, in D. D. Gillette, ed., Vertebrate Paleontology in Utah: Utah Geological Survey Mlscellaneous Publication 99-1, p. 389-398.) This contains data regarding some chapter |
