Exploring Erosion with Geologic Maps and Google Earth

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

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 erosional features and predict how these features may be reshaped by weathering.

Next Generation Science Standards MS-ESS 2 -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: http: //www. nextgenscience. org/ms-ess 2 -2 -earthssystems#framework

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: http: //beyondpenguins. ehe. osu. edu/issue/earths-changingsurface/common-misconceptions-about-weathering-erosion-volcanoes -and-earthquakes#. VSWmb_aftf 4. email

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: http: //beyondpenguins. ehe. osu. edu/issue/earths-changingsurface/common-misconceptions-about-weathering-erosion-volcanoes -and-earthquakes#. VSWmb_aftf 4. email

NOVA “Killer Landslides” http: //video. pbs. org/widget/partnerplayer/2365370505/? w=680&h=4 30. 2397&chapterbar=true&autoplay=true&endscreen=false&topbar=tr ue&wmode=transparent https: //youtu. be/YHe 8 i. HX 3 Mq 4

Current Event - Oso, Washington March 2014 Source: http: //media 1. s-nbcnews. com/i/newscms/2014_13/277796/140325 -mudslide-combination 02_be 9 dccd 21319 d 5 c 3 bbf 9322 f 3 ad 0 d 943. jpg

Landslide Animation http: //highered. mheducation. com/sites/0072402466/student_view 0/c hapter 9/animations_and_movies. html#

Current Event - Oso, Washington March 2014 Source: http: //media 1. s-nbcnews. com/i/newscms/2014_13/277796/140325 -mudslide-combination 02_be 9 dccd 21319 d 5 c 3 bbf 9322 f 3 ad 0 d 943. jpg

Oso, Washington and Chilicotal Mountains, Texas Oso Washington Landslide - 2014 Chilicotal Landslide – Pleistocene (2. 6 mya to 12, ooo years ago)

Texas Landslides Glenn Spring Quadrangle - Big Bend National Park

Satellite Views

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 erosional features and predict how these features may be reshaped by weathering.

Google Earth

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

Landslide Diagram - Chilicotal Mountains

Landslide Cross Section – Chilicotal Mountains

Interpret Topographic Maps and Identify Erosional Features

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 erosional features and predict how these features may be reshaped by weathering.

Chilicotal Mountains Topographic Features • Scarp • Pressure Ridges • Fan-shaped debris fields Oso Washington Landslide - 2014 Chilicotal Landslide – Pleistocene (2. 6 mya to 12, ooo years ago)

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)

Scale – Time and Space Oso Washington Landslide - 2014 Chilicotal Landslide – Pleistocene (2. 6 mya to 12, ooo years ago)

Predict

Predictions Oso Washington Landslide - 2014 Chilicotal Landslide – Pleistocene (2. 6 mya to 12, ooo years ago)

Lesson Resources Geologic Maps • USGS Map. View http: //ngmdb. usgs. gov/maps/mapview/ • The Bureau Store – Geologic Map of the Glenn Spring Quadrangle http: //begstore. beg. utexas. edu/store/

Lesson Resources Topographic maps – Glenn Spring Quadrangle • Texas Natural Resources Information System (TNRIS) http: //tnris. org/data-download/#!/statewide • USGS Topo. View http: //ngmdb. usgs. gov/maps/Topo. View/

Lesson Resources • Satellite imagery for Big Bend National Park • Google Earth http: //www. google. com/earth/

Additional Resources • SERC K-12 Science Portal – Teaching with Maps Collection http: //serc. carleton. edu/k 12/maps. html#collections • Skidmore – Fairly Simple Geology Exercises http: //www. skidmore. edu/~jthomas/fairlysimpleexercises/mapsandtopo. html • Hamline – Overview Presentation on Erosion and Weathering http: //d 32 ogoqmya 1 dw 8. cloudfront. net/files/sp/mnstep/activities/Weathering_and_Eros ion. ppt. pot. v 2. pdf • Earth Science Literacy Principle – Big Idea #4 Video http: //www. earthscienceliteracy. org/videodirectory/ESLP_Ch 004_700 Kbit_640 x 360. wmv

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

Next Generation Science Standards MS-ESS 2 -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: http: //www. nextgenscience. org/ms-ess 2 -2 -earthssystems#framework

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 http: //www. earthscienceliteracy. org/

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 http: //www. earthscienceliteracy. org/