Transcript McCall_GeologicMapsx

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
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.
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: http://www.nextgenscience.org/ms-ess2-2-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-erosionvolcanoes-and-earthquakes#.VSWmb_aftf4.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-erosionvolcanoes-and-earthquakes#.VSWmb_aftf4.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/YHe8iHX3Mq4
Current Event - Oso, Washington
March 2014
Source: http://media1.s-nbcnews.com/i/newscms/2014_13/277796/140325-mudslide-combination02_be9dccd21319d5c3bbf9322f3ad0d943.jpg
Landslide Animation
http://highered.mheducation.com/sites/0072402466/student_view0/c
hapter9/animations_and_movies.html#
Current Event - Oso, Washington
March 2014
Source: http://media1.s-nbcnews.com/i/newscms/2014_13/277796/140325-mudslide-combination02_be9dccd21319d5c3bbf9322f3ad0d943.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
and 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
and 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 MapView
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 TopoView
http://ngmdb.usgs.gov/maps/TopoView/
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/k12/maps.html#collections
• Skidmore – Fairly Simple Geology Exercises
http://www.skidmore.edu/~jthomas/fairlysimpleexercises/mapsandtopo.html
• Hamline – Overview Presentation on Erosion and Weathering
http://d32ogoqmya1dw8.cloudfront.net/files/sp/mnstep/activities/Weathering_and_Erosi
on.ppt.pot.v2.pdf
• Earth Science Literacy Principle – Big Idea #4 Video
http://www.earthscienceliteracy.org/videodirectory/ESLP_Ch004_700Kbit_640x360.wmv
Linda Ruiz McCall
Information Geologist and Resource Center Manager
Bureau of Economic Geology
The University of Texas at Austin
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: http://www.nextgenscience.org/ms-ess2-2-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/