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THE SEDIMENTOLOGY, STRATIGRAPHY, AND CHEMISTRY OF PLAYA LAKE DEPOSITS RESULTING FROM HURRICANE NORA IN THE CHAPALA BASIN, BAJA CALIFORNIA, MEXICO

Shoffner, Liselotte Rachel
http://rave.ohiolink.edu/etdc/view?acc_num=miami988211365

Abstract Details

2001, Master of Science, Miami University, Geology and Environmental Earth Science.
Laguna Chapala, Baja California, Mexico is a closed basin containing a playa lake and presumably a proxy record of climate. On September 25, 1997, hurricane Nora crossed the Chapala basin, causing flooding in Laguna Chapala and providing the unique opportunity to examine the sedimentological impacts of a hurricane on the playa stratigraphy. Runoff from hurricane Nora formed a lake that locally reached depths up to 1.2 m. The lake did not completely evaporate until February of 1998. The playa was surveyed to determine the lake hypsometry and samples were examined by particle size analysis and x-ray diffraction. The mean grain size was 5.7 phi units. The dominant clay minerals were smectite, illite, and kaolinite. The dominant evaporite mineral was halite. The evaporite crust, vegetative debris at the flooding boundary, and large-scale mudcracks were unique to flooding and provide the most useful indicators of a storm event in Laguna Chapala’s sediments.
Brian Currie (Advisor)
156 p.
playa; geomorphology; climate change

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Citations

  • Shoffner, L. R. (2001). THE SEDIMENTOLOGY, STRATIGRAPHY, AND CHEMISTRY OF PLAYA LAKE DEPOSITS RESULTING FROM HURRICANE NORA IN THE CHAPALA BASIN, BAJA CALIFORNIA, MEXICO [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami988211365

    APA Style (7th edition)

  • Shoffner, Liselotte. THE SEDIMENTOLOGY, STRATIGRAPHY, AND CHEMISTRY OF PLAYA LAKE DEPOSITS RESULTING FROM HURRICANE NORA IN THE CHAPALA BASIN, BAJA CALIFORNIA, MEXICO. 2001. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami988211365.

    MLA Style (8th edition)

  • Shoffner, Liselotte. "THE SEDIMENTOLOGY, STRATIGRAPHY, AND CHEMISTRY OF PLAYA LAKE DEPOSITS RESULTING FROM HURRICANE NORA IN THE CHAPALA BASIN, BAJA CALIFORNIA, MEXICO." Master's thesis, Miami University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=miami988211365

    Chicago Manual of Style (17th edition)

miami988211365
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© 2001, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.