Karl Wirth is an igneous petrologist, geochemist, and Associate Professor of Geology at Macalester College. His research interests are concerned primarily with the origins of igneous rocks and the chemical evolution of the Earth's crust and upper mantle.
Website Content Contributions
Using An M&M Magma Chamber To Illustrate Magmatic Differentiation part of Petrology:Teaching Examples
Fractional crystallization by gravity settling can be illustrated using a model magma chamber consisting of M&M's®. In this model, each major cation (e.g., Si, Ti, Al, Fe, Mg, Ca, Na, K) is ...
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Karl Wirth part of Metacognition:Workshop 08:Participant Essays
Learning About Thinking and Thinking About Learning: Metacognitive Knowledge and Skills for Intentional Learners by Karl Wirth, Department of Geology & Center for Scholarship and Teaching, Macalester College In ...
Karl Wirth part of Affective Domain:Workshop 07:Workshop Participants
Dept. of Geology, Macalester College Homepage ( This site may be offline. ) What are the key issues related to the role of the affective domain in teaching geoscience that you would like to engage at the workshop? ...
Conference Presentations (4)
The Challenges of "Bottleneck Graphs" in the Earth Sciences: Evidence from Expert and Novice Eye-Tracks part of Rendezvous 2015:Program:Abstracts
Professionals and students in the earth sciences use an array of graphs to study the earth. Earth scientists make use of a number of unique types of graphical formats that facilitate the representation and ...
Other Contributions (7)
X-Ray Fluorescence (XRF) part of Nanotechnology in STEM:Methods
An X-ray fluorescence (XRF) spectrometer is an x-ray instrument used for routine, relatively non-destructive chemical analyses of rocks, minerals, sediments and fluids. It works on wavelength-dispersive ...
Central Section, Geoscience Education Research Division