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Identification of sand sources and transport pathways at the Kelso Dunes, California, using thermal infrared remote sensing

1999; Geological Society of America; Volume: 111; Issue: 5 Linguagem: Inglês

10.1130/0016-7606(1999)111 2.3.co;2

1943-2674

M. S. Ramsey, P. R. Christensen, Nicholas Lancaster, Douglas A. Howard,

Atmospheric and Environmental Gas Dynamics

Research Article| May 01, 1999 Identification of sand sources and transport pathways at the Kelso Dunes, California, using thermal infrared remote sensing Michael S. Ramsey; Michael S. Ramsey 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Search for other works by this author on: GSW Google Scholar Philip R. Christensen; Philip R. Christensen 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Search for other works by this author on: GSW Google Scholar Nicholas Lancaster; Nicholas Lancaster 2Desert Research Institute, 7010 Dandini Boulevard, Reno, Nevada 89512 Search for other works by this author on: GSW Google Scholar Douglas A. Howard Douglas A. Howard 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Search for other works by this author on: GSW Google Scholar Author and Article Information Michael S. Ramsey 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Philip R. Christensen 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Nicholas Lancaster 2Desert Research Institute, 7010 Dandini Boulevard, Reno, Nevada 89512 Douglas A. Howard 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1999) 111 (5): 646–662. https://doi.org/10.1130/0016-7606(1999)111 2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Michael S. Ramsey, Philip R. Christensen, Nicholas Lancaster, Douglas A. Howard; Identification of sand sources and transport pathways at the Kelso Dunes, California, using thermal infrared remote sensing. GSA Bulletin 1999;; 111 (5): 646–662. doi: https://doi.org/10.1130/0016-7606(1999)111 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The Kelso dune field is located in the eastern Mojave Desert, California, at the terminus of a sand-transport pathway, which has its primary source at the Mojave River Wash 50 km to the west. Initial examination of 1984 airborne thermal infrared multispectral scanner (TIMS) data showed significant spectral variations that indicate potential mineralogic heterogeneities within the active dunes. This result prompted the collection of a suite of 48 sand samples in 1990, and the acquiring of new TIMS data in 1995. This new data set was used to test a newly developed linear spectral retrieval algorithm in conjunction with a spectral library of end-member minerals. Results of this analysis produced images of end-member minerals that showed marked variations within the dunes. In addition, standard petrographic techniques revealed that the dunes contain mineralogic variations and were much less quartz rich (∼42%) than previously reported (∼70%–90%). Point-count results agreed with the spectral data to within an average of 5.3% for TIMS-derived and 3.1% for laboratory-derived mineralogic abundances. High concentrations of several of the end-member minerals on the surrounding alluvial fans indicate a potential nearby source for these minerals. Most evident is the presence of potassium feldspar from the fan that emanates from the Providence Mountains east of the dunes. This previously unidentified potential sand input is not visible with other remote sensing techniques and was confirmed with additional field sampling. Much of the quartz and some plagioclase feldspar, however, appear to have been transported from the Mojave River Wash source as previously reported. This study also validates the potential of using thermal remote sensing from future satellite-based instruments to globally monitor desert fringe areas susceptible to the changing conditions of sand encroachment. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.