1. Exploring Erosion with Geologic Maps and Google Earth Prehistoric Landslides – Chilicotal Mountains, Big Bend National Park, Texas
Linda Ruiz McCall Information Geologist and Resource Center Manager Bureau of Economic Geology The University of Texas at Austin

2. Texas Essential Knowledge and Skills 2015-2016 Target
The student knows that natural events can impact Earth systems. The student is expected to interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.

3. Next Generation Science Standards MS-ESS2-2 Earth's Systems
Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales. Source: systems#framework

4. Common Student Misconceptions
Rocks do not change.
Weathering and erosion are essentially the same thing. The two words can be used interchangeably.
Erosion happens quickly.
Erosion is bad.
Source: surface/common-misconceptions-about-weathering-erosion- volcanoes-and-earthquakes#.VSWmb_aftf4.

5. Misconception – Rocks do not change.
Students tend to view the earth as static, stable, and unchanging. They often have difficulty believing that rocks can change or be worn down through the process of weathering. Students also tend to confuse weathering (the physical or chemical breakdown of rock) with erosion (the process of transporting sediments). Source: surface/common-misconceptions-about-weathering-erosion- volcanoes-and-earthquakes#.VSWmb_aftf4.

6. NOVA “Killer Landslides”
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7. Current Event - Oso, Washington March 2014
Source:

8. Landslide Animation
hapter9/animations_and_movies.html#

9. Current Event - Oso, Washington March 2014
Source:

10. Oso, Washington and Chilicotal Mountains, Texas
Oso Washington Landslide
Chilicotal Landslide – Pleistocene (2.6 mya to 12,ooo years ago)

11. Texas Landslides Glenn Spring Quadrangle - Big Bend National Park

12. Satellite Views

13. Texas Essential Knowledge and Skills 2015-2016 Target
The student knows that natural events can impact Earth systems. The student is expected to interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.

14. Google Earth

15. Chilicotal Mountains Geology/Topography – Bureau MM 46
Satellite Imagery – Google Earth

16. Landslide Diagram - Chilicotal Mountains

17. Landslide Cross Section – Chilicotal Mountains

18. Interpret Topographic Maps and Identify Erosional Features

19. Texas Essential Knowledge and Skills 2015-2016 Target
The student knows that natural events can impact Earth systems. The student is expected to interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.

20. Chilicotal Mountains Topographic Features Scarp Pressure Ridges
Fan-shaped debris fields
Oso Washington Landslide
Chilicotal Landslide – Pleistocene (2.6 mya to 12,ooo years ago)

21. Chilicotal Mountains
Resistant volcanic formations “cap” Chilicotal Mountain.
Softer sedimentary rocks below are more easily weathered and eroded.
Chilicotal Landslide – Pleistocene (2.6 mya to 12,ooo years ago)

22. Scale – Time and Space Oso Washington Landslide - 2014
Chilicotal Landslide – Pleistocene (2.6 mya to 12,ooo years ago)

23. Predict

24. Predictions Oso Washington Landslide - 2014
Chilicotal Landslide – Pleistocene (2.6 mya to 12,ooo years ago)

25. Lesson Resources Geologic Maps
USGS MapView
The Bureau Store – Geologic Map of the Glenn Spring Quadrangle

26. Lesson Resources Topographic maps – Glenn Spring Quadrangle
Texas Natural Resources Information System (TNRIS)
USGS TopoView

27. Lesson Resources Satellite imagery for Big Bend National Park
Google Earth

28. Additional Resources
SERC K-12 Science Portal – Teaching with Maps Collection
Skidmore – Fairly Simple Geology Exercises
Hamline – Overview Presentation on Erosion and Weathering on.ppt.pot.v2.pdf
Earth Science Literacy Principle – Big Idea #4 Video

29. Linda Ruiz McCall Information Geologist and Resource Center Manager Bureau of Economic Geology The University of Texas at Austin

30. Next Generation Science Standards MS-ESS2-2 Earth's Systems
Clarification Statement: Emphasis is on how processes change Earth’s surface at time and spatial scales that can be large (such as slow plate motions or the uplift of large mountain ranges) or small (such as rapid landslides or microscopic geochemical reactions), and how many geoscience processes (such as earthquakes, volcanoes, and meteor impacts) usually behave gradually but are punctuated by catastrophic events. Examples of geoscience processes include surface weathering and deposition by the movements of water, ice, and wind. Emphasis is on geoscience processes that shape local geographic features, where appropriate. Source: systems#framework

31. Earth Science Literacy Principles Big Idea 4
Earth Science Literacy Principles Big Idea 4. Earth is continuously changing.
4.7 Landscapes result from the dynamic interplay between processes that form and uplift new crust and processes that destroy and depress the crust. This interplay is affected by gravity, density differences, plate tectonics, climate, water, the actions of living organisms, and the resistance of Earth materials to weathering and erosion. Source

32. Earth Science Literacy Principles Big Idea 4
Earth Science Literacy Principles Big Idea 4. Earth is continuously changing.
4.8 Weathered and unstable rock materials erode from some parts of Earth’s surface and are deposited in others. Under the influence of gravity, rocks fall downhill. Water, ice, and air carry eroded sediments to lower elevations, and ultimately to the ocean.
Source