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Simpson_Final_HTC_Thesis.pdf (2.14 MB)

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The Effect of Sampling Processing on X-Ray Diffraction Peaks of Dolomite: Implications for Studies of Shock Metamorphosed Materials

Simpson, Emily N
http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1556116438060597

Abstract Details

2019, Bachelor of Science (BS), Ohio University, Geological Sciences.
Impact craters are formed when shock waves propagate through target rock on the surface of a planet during an impact event. Shock waves produced during such collisions commonly affect the crystal lattices of existing minerals. Carbonate minerals, such as dolomite, are changed in non-unique ways during impacts. For example, the amount of twinning, fracturing, and cleavage may increase as a result of deformation. Previous work has shown that the X-ray diffraction (XRD) peaks of minerals may be affected as a result of crystal lattice deformation during an impact event. With an increase in the magnitude of shock metamorphism, there is an increase in peak broadening and a decrease in peak intensity. Prior studies, however, have done little to assess the effects of sample processing on X-ray diffraction patterns and whether or not such effects might be misinterpreted to represent the effects of shock metamorphism. In this study, the effects of sample processing were assessed in regards to changes in the X-ray diffraction peaks of unshocked materials that have been processed for differing lengths of time. Shocked samples were also studied to determine if there is enough of an effect from sample processing that the potential effects of shock metamorphism are overprinted completely. Results indicate that the method of grinding, as well as the length of time spent grinding can have measurable effects on the diffraction patterns obtained.
Keith Milam, PhD (Advisor)
Alycia Stigall, PhD (Committee Member)
Dawn Ruth, PhD (Committee Member)
44 p.
Geology
X-ray Diffraction, Sample Processing, Impact Cratering, Shock Metamorphism

Recommended Citations

Citations

  • Simpson, E. N. (2019). The Effect of Sampling Processing on X-Ray Diffraction Peaks of Dolomite: Implications for Studies of Shock Metamorphosed Materials [Undergraduate thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1556116438060597

    APA Style (7th edition)

  • Simpson, Emily. The Effect of Sampling Processing on X-Ray Diffraction Peaks of Dolomite: Implications for Studies of Shock Metamorphosed Materials. 2019. Ohio University, Undergraduate thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1556116438060597.

    MLA Style (8th edition)

  • Simpson, Emily. "The Effect of Sampling Processing on X-Ray Diffraction Peaks of Dolomite: Implications for Studies of Shock Metamorphosed Materials." Undergraduate thesis, Ohio University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1556116438060597

    Chicago Manual of Style (17th edition)

ouhonors1556116438060597
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© 2019, all rights reserved.
This open access ETD is published by Ohio University Honors Tutorial College and OhioLINK.