LSUMNS geology activities
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Transcript of LSUMNS geology activities
An LSU Museum of Natural Science presentation to accompany the activity
Louisiana Rocks and Louisiana Rocks and MineralsMinerals
Objective: Students will gain an understanding of where minerals come from and the environmental impact of mining.
Materials
For teacher: Stop watch, scale, bucket of pennies
For student: 4 chocolate cookies, toothpicks, pencil, data recording sheet, small weigh boat
Mining for MMM…MineralsMining for MMM…Minerals
Investigating the layer- cake earth
What is stratigraphy?
Study of sediment layers and the relationship between rocks and fossils with time.
Rules of StratigraphyRules of Stratigraphy
• Steno’s Principle of SuperpositionLower layers are older than higher layers
• Original HorizontalityLayers are deposited in (near-) horizontal manner
• Principle of Lateral continuityLayers extend laterally in all direction
• Cross-Cutting RelationshipsLayers intruded by other rocks are older than
theintruding rocks
Unconformities-represents a gap in deposition – lost time!
• Nonconformity• Angular• Disconformity
Sediment layers are LostSediment layers are Lost…..…..
http://epod.usra.edu/archive/images/uncoformitysm.jpg
……..And Moved..And Moved
Faults - Surfaces where rocks have fractured and been displaced (move relative to one another).
Rules apply across Space and Time!Rules apply across Space and Time!
Given the diagram, list the order (oldest to youngest) in which the following events happened:
A. Faulting B. Tilting E. IntrusionC. Erosion D. Deposition
Classroom assessment activity
Deposition 1Deposition 1
Tilting
Tilt
ing
Deposition 2 Deposition 2
IntrusionErosion
Faulting
1. Deposition 1 2. Tilting 3. Erosion4. Deposition 2 5. Intrusion 6. Faulting
Illustration of example cake set-up. Note different cake layers (different colors) and
fault.