31.%20Geologic%20Time

31.%20Geologic%20Time - Geologic Time Geological Laws...

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Unformatted text preview: Geologic Time Geological Laws Lecture 3 Concept of Time Lecture 1:Geologic Time Page 1 of 27 Lecture 3: Geologic Time & Laws Concept of Time Geologic Time Lecture 1:Geologic Time Page 2 of 27 Lecture 3: Geologic Time & Laws Geologic Time in a Year Lecture 1:Geologic Time Page 3 of 27 Lecture 3: Geologic Time & Laws Geologic Time in a Year Geologic Time Scale Lecture 1:Geologic Time Page 4 of 27 Lecture 3: Geologic Time & Laws Geological Laws Uniformitarianism Present is the Key to the Past Original Horizontality Units were originally deposited horizontality Superposition Older unit is on the bottom Cross-Cutting Relationships Younger feature crosses older feature 10 Problems in Geologic Interpretations (from Schumm, S. S., 1991, To Interpret the Earth – Ten Ways to be Wrong) Time: Length of the data record Space: Scale effects Location: Inter-relationships of space Convergence: Different processes/events cause similar effects Divergence: Similar processes/events cause different effects Lecture 1:Geologic Time Page 5 of 27 Lecture 3: Geologic Time & Laws 10 Problems in Geologic Interpretations (from Schumm, S. S., 1991, To Interpret the Earth – Ten Ways to be Wrong) Sensitivity: System response Singularity: Uniqueness Complexity: Response to stimuli Efficiency: Relationship between work and effect Multiplicity: Multiple causes acting together produce different results Problems of Explanation & Extrapolation (from Schumm, S. S., 1991, To Interpret the Earth – Ten Ways to be Wrong) History Time Location Sensitivity Complexity Lecture 1:Geologic Time Page 6 of 27 Lecture 3: Geologic Time & Laws Problems of Explanation & Extrapolation (from Schumm, S. S., 1991, To Interpret the Earth – Ten Ways to be Wrong) Process Convergence Divergence Complexity Sensitivity Efficiency Multiplicity Problems of Explanation & Extrapolation (from Schumm, S. S., 1991, To Interpret the Earth – Ten Ways to be Wrong) Comparison Space Location Singularity Sensitivity Complexity Multiplicity Lecture 1:Geologic Time Page 7 of 27 Lecture 3: Geologic Time & Laws Significance of Time Scale Significance of Time Scale Lecture 1:Geologic Time Page 8 of 27 Lecture 3: Geologic Time & Laws Significance of Time Scale Paleogeography Study of the movement of continents in response to global plate tectonics: (Seafloor Spreading) (Continental Drift) Lecture 1:Geologic Time Page 9 of 27 Lecture 3: Geologic Time & Laws Cambrian Cambrian, North America Lecture 1:Geologic Time Page 10 of 27 Lecture 3: Geologic Time & Laws Ordovician Ordovician, North America Lecture 1:Geologic Time Page 11 of 27 Lecture 3: Geologic Time & Laws Silurian Devonian Lecture 1:Geologic Time Page 12 of 27 Lecture 3: Geologic Time & Laws Mississippian Mississippian, North America Lecture 1:Geologic Time Page 13 of 27 Lecture 3: Geologic Time & Laws Pennsylvanian Pennsylvanian, North America Lecture 1:Geologic Time Page 14 of 27 Lecture 3: Geologic Time & Laws Permian Permian, North America Lecture 1:Geologic Time Page 15 of 27 Lecture 3: Geologic Time & Laws Triassic Triassic, North America Lecture 1:Geologic Time Page 16 of 27 Lecture 3: Geologic Time & Laws Jurassic Jurassic, North America Lecture 1:Geologic Time Page 17 of 27 Lecture 3: Geologic Time & Laws Cretaceous Cretaceous, North America Lecture 1:Geologic Time Page 18 of 27 Lecture 3: Geologic Time & Laws Early Cenozoic Late Cenozoic Lecture 1:Geologic Time Page 19 of 27 Lecture 3: Geologic Time & Laws Cenozoic, North America Lecture 1:Geologic Time Page 20 of 27 Lecture 3: Geologic Time & Laws What’s the Evidence? Continental Fit What’s the Evidence? Fossil Links Lecture 1:Geologic Time Page 21 of 27 Lecture 3: Geologic Time & Laws What’s the Evidence? Glacial Ice Tracks during the Permian What’s the Evidence? Mountain Patterns Lecture 1:Geologic Time Page 22 of 27 Lecture 3: Geologic Time & Laws What’s the Evidence? Polar Shifts throughout Time Physical Character of Texas Lecture 1:Geologic Time Page 23 of 27 Lecture 3: Geologic Time & Laws Texas from Space Texas Topography Lecture 1:Geologic Time Page 24 of 27 Lecture 3: Geologic Time & Laws Texas Landform Texas Geology Coastal Plain — Balcones — High Plains — Basin & Range Lecture 1:Geologic Time Page 25 of 27 Lecture 3: Geologic Time & Laws Texas Soil All soil classes occur in Texas except Oxisols and Spodosols Urbanized Lands Air and Ground Water pollution Hydraulic system alterations Lecture 1:Geologic Time Page 26 of 27 Lecture 3: Geologic Time & Laws Break Lecture 1:Geologic Time Page 27 of 27 Lecture 3: Geologic Time & Laws ...
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