Examining the Interior of the Llaima Volcano, Chile: Evidence from Receiver Functions
Public Deposited- Last Modified
- February 26, 2019
- Creator
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Bishop, Jordan
- Affiliation: College of Arts and Sciences, Department of Geological Sciences
- Abstract
- The Llaima volcano is the second most active volcano in the southern Andes. However, despite its frequent eruptions and close proximity to the towns of Melipueco and Vilcun, not much is known about the interior of the volcano. In 2012, a petrologic study was conducted on the volcano, producing the first images of what its magmatic system is like. However, seismic imaging of the interior of the volcano had yet to be conducted. In this paper, we apply receiver functions to produce the first seismic study of the interior of the Llaima volcano. An iterative deconvolution technique was applied to both deep local events and teleseismic earthquakes recorded by seismometers near the Llaima. Once receiver functions were calculated, H-κ stacking was applied to probe the Earth structure under the volcano and search for areas of partial melting. From this survey, it was found that the Mohorovii discontinuity (Moho) was located at approximately sixty kilometers beneath the volcano, and that a pocket of partial melting was found at approximately twenty kilometers depth. This study provides the first look at the deep magmatic system structure underneath Llaima.
- Date of publication
- summer 2016
- Keyword
- DOI
- Resource type
- Rights statement
- In Copyright
- Note
- Funding: None
- Advisor
- Lees, Jonathan
- Degree
- Bachelor of Science
- Honors level
- Honors
- Degree granting institution
- University of North Carolina at Chapel Hill
- Extent
- 20
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