Photograph by R. Kissel Hills represent western edge of the West Chicago Moraine.
(Reynolds et al., 2008) Kettle lakes (simple labeled “lake” below) form when, during the melting/retreat of a glacier, blocks of ice are left behind; these blocks create small depressions that then fill with water as the ice melts.
Photograph by R. Kissel Hills represent western edge of the West Chicago Moraine. Depression in which wetlands now form is thought to be a former Kettle Lake.
Summer of 2007… Photograph by R. Kissel
Fragment of Mastodon Tusk recovered from the kettle lake deposit Photograph by R. Kissel
Photograph by R. Kissel The surface of Illinois…
TFGs are the tool that will bring real regional and local geology into the curriculum Regional Guides: Northeast – Completed. Southeast – Completed. South Central – Coming Soon! Midwestern – Coming 2010. Western – Coming 2010. Rocky Mountain – Coming 2011. Southwestern – Coming 2011. Western – Coming 2010. Teacher Friendly Guides
South Central Teacher-Friendly Guide
3 1 2 4 5 1 Central Lowland 2 Ozark-Ouchita Uplift 3 Great Plains Province 4 Basin and Range Province 5 Coastal Plain
Teacher-Friendly Guides - ONLINE!
Virtual Field Experiences (VFEs) VFEs bring the field into the classroom when students are unable to go to the field.
VFE’s are not intended to be trips… – Trips = Linear guided tours – Experiences = Inquiry-driven exploration Accomplished through a variety of cutting edge technologies including: –Google Earth –Panoramic and high-resolution composite photos –Interactive web-based distribution Virtual Field Experiences (VFEs)
Virtual Field Experiences – ONLINE!
Taughannock Falls State Park, NY – Completed (untested) Niagara Whirlpool, NY – In progress Arbuckle Mountains, OK – In progress Adirondack Park, NY – In progress Glacier National Park, MT – In progress Crater Lake, Oregon – July 2010 Monroe, Michigan – July 2010 Glen Rose Formation, Texas – THIS WORKSHOP! Field Sites for VFEs COMPLETED&UPCOMING
Creating a VFE: The Glen Rose Formation
Trinity Group - Lower Cretaceous - Shallow-water marine formations, thickening to the east - Uppermost & thickest unit is the Glen Rose Formation Kl 1
Glen Rose Formation - Lower Cretaceous - Aptian-Albian boundary found within the unit (112 Ma; ICS, 2009) - Common taxa include Ammonites (A) Worm tubes (B & E) Gastropods (C-D) Bivalves (F-H) Urchins (I-J) Algae (K) Age…
Glen Rose Formation Dinosaur Trackways Dinosaur Trackways
Glen Rose Formation - Trackways
Pleurocoelus Pleurocoelus Brontopodus Brontopodus Glen Rose Formation - Trackways
Acrocanthosaurus Eubrontes Eubrontes
Glen Rose Formation - Trackways
Early Cretaceous Trackways of Texas
Glen Rose Formation - Shallow marine to shore- line, along a tidal flat or lagoon at the margin of a shallow sea. Deposition… Deposition…
Glen Rose Formation - Balcones Fault Zone - Active during the Miocene, around 20-25 Ma - Related to the subsidence of the Coastal Plain - Not active today Post-deposition 1 Post-deposition 1
Glen Rose Formation - Balcones Fault Zone - Active during the Miocene, around 20-25 Ma - Related to the subsidence of the Coastal Plain - Not active today - Normal (extensional) faults, horsts, and grabens Post-deposition 1 Post-deposition 1
Glen Rose Formation - Cavern Formation - Acidic ground water mov- ing through fractured rock (faults and joints) led to karstic features - The Glen Rose contains the lower chambers of Natural Bridge Caverns Post-deposition 02 Post-deposition 02
Glen Rose Formation - Canyon Lake Gorge * Reservoir completed in 1964 to prevent flash flooding along the Guadelupe River * July 2002 – 35” of rain * More than 7’ of water, at 70,000 feet/second, poured over the spillway Post-deposition 03 Post-deposition 03
Glen Rose Formation - Canyon Lake Gorge * 800-meter long section of the Hidden Valley Fault (a normal fault of the Balcones system) exposed Post-deposition 03 Post-deposition 03
Glen Rose Formation ANCIENT & RECENT PROCESSES Canyon Lake Gorge Canyon Lake Gorge
Glen Rose Formation ANCIENT & RECENT PROCESSES Canyon Lake Gorge Canyon Lake Gorge “Why does this place “Why does this place look the way it does?” look the way it does?”
Our Goal: Creating a Glen Rose Formation Virtual Field Experience! Virtual Field Experience!