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MARGINS Mini-lesson Collection


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Volcanoes of Central America
Volcano distribution and tectonics at a convergent margin: Central American volcanoes

How Slab Dip Affects the Location of Volcanoes
Students will plot the locations of earthquakes on the top of subducting slabs to determine slab dip and will then develop hypotheses regarding the relationship between slab dip, the depth of the slab, and volcanic activity on the surface.

A Volcanic Record Through Time
This is a lecture segment that can be used or adapted for use in an undergraduate geoscience class. The goal of the lecture is to familiarize students with the concept of volcanic change through time at time scale commensurate to plate tectonic evolution.

Testing plate tectonics in the Gulf of California
This is a simple exercise to use real-world data from recent large earthquakes so that students can "test" for themselves if plate tectonics "works" in the Gulf of California.

The Woodlark Basin as a Natural Laboratory for the Study of the Geological Sciences
This activity guides the students through a set of geological problems related to the Woodlark Basin, Papua New Guinea.

Profiling Earth's Surface using GeoMapApp
In this exercise, students relate large-scale features on Earth's surface to lithospheric plates, the underlying asthenosphere, earthquakes, and volcanoes. After creating a cross section showing elevation using GeoMapApp, students add additional features by hand.

Physical and Chemical Variations Along the Central American Volcanic Arc
The Central American volcanic arc displays large arc-parallel variations in chemical composition that yield important clues concerning the complex origin of magmas in subduction zones. In this exercise, students use data compiled for the NSF MARGINS program to compare heights, volumes, and whole-rock compositions of 39 Quaternary volcanic centers along the Central American arc, together with crustal thicknesses, to assess the possible sources of the magmas and the petrologic processes that have modified them prior to eruption.

Connecting Cross-Sectional Data from the Red Sea to Plate Tectonics
Students will use map views and cross-sectional profiles across the Red Sea to determine plate tectonic processes in the region. Google Earth is a technological tool used to facilitate the investigation.

Margin Morphology: Does Form Follow Function?
Students will use GeoMapApp to investigate variations in the geomorphology of continental margins both Passive and Active at various sites of the North American and South American continents. They will ...

Source to Sink Morphology, Sedimentation, and Anthropogenic Impact: Hudson System, New York
Familiarize students with the morphology of passive continental margins and their associated shelf valleys, submarine canyons and estuaries, and assess the anthropogenic impact.