The goal of this virtual field trip to Iridium Hill, Montana is to investigate the disappearance of dinosaur fossils above the Cretaceous/ Tertiary boundary. The site provides rock outcrop photos of Cretaceous and Tertiary strata (Hell Creek and Fort Union Formations), stratigraphic sections and supporting text for this classic iridium-bearing locality. Topics include the K/T boundary, iridium concentrations, stratigraphy, sedimentology and, fluvial and lacustrine depositional environments.
This resource is referenced here:Subject: Biology,
Geoscience:Hydrology,
Geology
Resource Type:
Audio/Visual:Images/Illustrations,
Activities:Virtual Field Trip, Activities
Focus on the Cretaceous: Paleontology
Topics: Earth surface, Hydrosphere/Cryosphere, Time/Earth History, Biosphere
Keywords: ancient river deposits, Chicxulub impact, extinction
