Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures
With the recent introduction of handheld instruments for field use, laser-induced breakdown spectroscopy (LIBS) is emerging as a practical technology for real-time in situ geochemical analysis in the field. LIBS is a form of optical emission spectroscopy that is simultaneously sensitive to all eleme...
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| Format: | Article |
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MDPI AG
2023-09-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/10/1284 |
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| author | Russell S. Harmon Chandra S. Throckmorton Greg Haverstock Dirk Baron Robert M. Yohe Richard R. Hark Jeffrey R. Knott |
| author_facet | Russell S. Harmon Chandra S. Throckmorton Greg Haverstock Dirk Baron Robert M. Yohe Richard R. Hark Jeffrey R. Knott |
| author_sort | Russell S. Harmon |
| collection | DOAJ |
| description | With the recent introduction of handheld instruments for field use, laser-induced breakdown spectroscopy (LIBS) is emerging as a practical technology for real-time in situ geochemical analysis in the field. LIBS is a form of optical emission spectroscopy that is simultaneously sensitive to all elements with a single laser shot so that a broadband LIBS spectrum can be considered a diagnostic <i>geochemical fingerprint</i>. Sets of LIBS spectra were collected for seven obsidian centers across north-central California, with data processed using multivariate statistical analysis and pattern recognition techniques. Although all obsidians exhibit similar bulk compositions, different regional obsidian sources were effectively discriminated via partial least squares discriminant analysis. Obsidian artifacts from seven archaeological sites were matched to their putative sources with a high degree of confidence. |
| first_indexed | 2024-03-10T21:02:09Z |
| format | Article |
| id | doaj.art-f56ff9ff20b74d7384bb2882f01a6dc9 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T21:02:09Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
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| series | Minerals |
| spelling | doaj.art-f56ff9ff20b74d7384bb2882f01a6dc92023-11-19T17:30:14ZengMDPI AGMinerals2075-163X2023-09-011310128410.3390/min13101284Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral SignaturesRussell S. Harmon0Chandra S. Throckmorton1Greg Haverstock2Dirk Baron3Robert M. Yohe4Richard R. Hark5Jeffrey R. Knott6Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USASignal Analysis Solutions, Bahama, NC 27503, USABureau of Land Management, Bishop, CA 93514, USADepartment of Geology, California State University Bakersfield, Bakersfield, CA 93311, USALaboratory of Archaeological Sciences, California State University Bakersfield, Bakersfield, CA 93311, USAInstitute for the Preservation of Cultural Heritage, Yale University, West Haven, CT 06516, USADepartment of Geological Sciences, California State University Fullerton, Fullerton, CA 92831, USAWith the recent introduction of handheld instruments for field use, laser-induced breakdown spectroscopy (LIBS) is emerging as a practical technology for real-time in situ geochemical analysis in the field. LIBS is a form of optical emission spectroscopy that is simultaneously sensitive to all elements with a single laser shot so that a broadband LIBS spectrum can be considered a diagnostic <i>geochemical fingerprint</i>. Sets of LIBS spectra were collected for seven obsidian centers across north-central California, with data processed using multivariate statistical analysis and pattern recognition techniques. Although all obsidians exhibit similar bulk compositions, different regional obsidian sources were effectively discriminated via partial least squares discriminant analysis. Obsidian artifacts from seven archaeological sites were matched to their putative sources with a high degree of confidence.https://www.mdpi.com/2075-163X/13/10/1284laser-induced breakdown spectroscopyLIBSobsidiangeochemical fingerprintingmultivariate analysischemometrics |
| spellingShingle | Russell S. Harmon Chandra S. Throckmorton Greg Haverstock Dirk Baron Robert M. Yohe Richard R. Hark Jeffrey R. Knott Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures Minerals laser-induced breakdown spectroscopy LIBS obsidian geochemical fingerprinting multivariate analysis chemometrics |
| title | Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures |
| title_full | Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures |
| title_fullStr | Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures |
| title_full_unstemmed | Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures |
| title_short | Connecting Obsidian Artifacts with Their Sources Using Multivariate Statistical Analysis of LIBS Spectral Signatures |
| title_sort | connecting obsidian artifacts with their sources using multivariate statistical analysis of libs spectral signatures |
| topic | laser-induced breakdown spectroscopy LIBS obsidian geochemical fingerprinting multivariate analysis chemometrics |
| url | https://www.mdpi.com/2075-163X/13/10/1284 |
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