Paleocurrents.comBack to:  Field School,  Sedimentology & Stratigraphy,  Intro to Geology,  Fossils,  Lab Methods

Geology of Colorado (Boulder Valley) - Field Trip #1, Stop #1: Fountain Formation

Prev | Index For This Date | Next
Notice cracks that are NOT on the bedding plane. These are exfoliation joints caused by weathering and the formation being brought back to the surface. The rock was under extreme pressure at depth. As it came up and weathered, these surface layers are popping off perpendicular to the bedding planes.
Prev | Index For This Date | Next

Notice cracks that are NOT on the bedding plane. These are exfoliation joints caused by weathering and the formation being brought back to the surface. The rock was under extreme pressure at depth. As it came up and weathered, these surface layers are popping off perpendicular to the bedding planes.



PALEOCURRENTSCastle RockGreen River, UTGreen River, COPaleo Certification
Dinosaur N.M.Utah Field HousePast Fossil ShowsReader FeedbackLinks
Prehistoric JourneyOklahoma TrilobitesColorado TrilobitesCarson Nature CenterPaleo Field Trips


Developed by Steve Wagner, Denver Museum of Nature & Science Volunteer
Hosting donated by Wagner Database Solutions, Inc.