Historical Earthquakes and Uplift/Subsidence of Sumatra from Coral Growth Rings -- Advanced Version
This activity was selected for the On the Cutting Edge Exemplary Teaching Collection
Resources in this top level collection a) must have scored Exemplary or Very Good in all five review categories, and must also rate as “Exemplary” in at least three of the five categories. The five categories included in the peer review process are
- Scientific Accuracy
- Alignment of Learning Goals, Activities, and Assessments
- Pedagogic Effectiveness
- Robustness (usability and dependability of all components)
- Completeness of the ActivitySheet web page
For more information about the peer review process itself, please see http://serc.carleton.edu/NAGTWorkshops/review.html.
This activity has gone through a workshop review process.
This resource was reviewed as part of the May 2009 MARGINS Mini-Lesson Workshop. Each activity received verbal feedback from two participants who had reviewed the activity and activity sheet using these guidelines. Authors revised the activities and activity sheets in response to these comments during the workshop.
This page first made public: Apr 22, 2009
- how land level changes
- when a historic earthquake happened
Context for Use
- Figures 1 through 6 (including a location map) are included with this lab. You will refer to and annotate the coral figures to answer the following questions.
- Colored pencils, ruler, and calculator
Use tidal gauge data from different places around the world. Is sea level rising or falling globally? How might the Gulf coast differ from Alaska? Does sea level appear to be falling in tectonically active regions? For a sed/strat or geomorphology class, this exercise would be a terrific match to a terrace-level assignment.
Another idea is to get GPS data from stations on Sumatra and compare modern horizontal motions with the historical vertical motions.
Description and Teaching Materials
Figure 1 -- Location Map (Acrobat (PDF) 2.4MB Apr13 09)
Figure 2 -- Head Bai (Acrobat (PDF) 293kB May29 09)
Figure 3 -- Coral Unconformities Example (Acrobat (PDF) 518kB Apr13 09)
Figure 4 -- Head Tb1 (Acrobat (PDF) 278kB Apr13 09)
Figure 5 -- Head Tb2 (Acrobat (PDF) 839kB Apr21 09)
Figure 6 -- Comparison of Tb Corals (Acrobat (PDF) 540kB May28 09)
Teaching Notes and Tips
Teachers can contact me for an answer sheet, which I am happy to provide.
References and Resources