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<span style="font-family: Helvetica, Arial, Helvetica, sans-serif; font-size: 16pt; color: rgb(0, 0, 0); text-transform: none;">I am pleased to announce a colloquium </span>
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<b>On: Monday February 9 at 10:45am </b></div>
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<b>By: Dr. Mitchel McMillan</b></div>
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<b>Georgia Institute of Technology</b></div>
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<b>At: EOAS 6042</b></div>
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<b>Entitled: Lithospheric drip tectonics: From mapping to models</b></div>
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<span style="background-color: rgb(255, 255, 255); text-transform: none;">Abstract:</span></div>
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<div style="color: rgb(0, 0, 0);"><span style="font-family: Helvetica, Arial, Helvetica, sans-serif; font-size: 16pt; background-color: rgb(255, 255, 255); text-transform: none;">Gravitational foundering (lithospheric dripping or delamination) is considered
an important mechanism for removing dense, mafic portions of volcanic arc crust. Does a similar process also operate beneath back-arc orogens and thereby contribute to mountain building? Some geologic and geophysical data provide evidence for this "drip tectonics"
hypothesis, but it remains poorly understood. In this talk, I will present results from geologic mapping in the Andean Puna Plateau, along with geodynamic and thermodynamic simulations. These results suggest that dripping/delamination may be intrinsically
linked to plate tectonics through crustal thickening and fluid migration, and they highlight a need for further research to understand the feedbacks between fluid infiltration, metamorphism, and deformation</span><span style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt;"><br>
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