Nelia Dunbar

Activity Report 2011

Published Papers (prepare as complete reference citations and attach abstracts not previously submitted)

Cather, S.M., Read, A.S., Dunbar, N.W., Kues, B.S., Krainer, K., Lucas, S.G., and Kelley, S.A., 2011, Provenance evidence for major post-early Pennsylvanian dextral slip on the Picuris-Pecos fault, northern New Mexico: Geosphere, v. 7, p. 1175-1193.

Dunbar, N.W., and Kurbatov, A.V., 2011, Tephrochronology of the Siple Dome ice core, West Antarctica: correlations and sources: Quaternary Science Reviews, v. 30, p. 1602-1614.

Elkins, L.J., Sims, K.W.W., Prytulak, J., Elliott, T., Mattielli, N., Blichert-Toft, J., Blusztajn, J., Dunbar, N., Devey, C., Mertz, D.F., Schilling, J.G., and Murrell, M., 2011, Understanding melt generation beneath the slow-spreading Kolbeinsey Ridge using (238)U, (230)Th, and (231)Pa excesses: Geochimica et Cosmochimica Acta, v. 75, p. 6300-6329.

Garcia, L., Petronis, M., Koning, D.J., Zimmerer, M., and Dunbar, N., 2011, Structural, anisotropy of magnetic susceptibility, geochemistry, and paleomagnetic investigations of a steeply dipping, welded tuff (Amalia Tuff) south of Petaca, New Mexico: Guidebook - New Mexico Geological Society, v. 62, p. 105-108.

Koning, D.J., McIntosh, W.C., and Dunbar, N., 2011, Geology of southern Black Mesa, Espanola Basin, New Mexico; new stratigraphic age control and interpretations of the southern Embudo fault system of the Rio Grande Rift: Guidebook - New Mexico Geological Society, v. 62, p. 191-214.

Koning, D.J., Newell, D.L., Sarna-Wojcicki, A., Dunbar, N., Karlstrom, K.E., Salem, A., and Crossey, L.J., 2011, Terrace stratigraphy, ages, and incision rates along the Rio Ojo Caliente, north-central New Mexico: Guidebook - New Mexico Geological Society, v. 62, p. 281-300.

Korotkikh, E.V., Mayewski, P.A., Handley, M.J., Sneed, S.B., Introne, D.S., Kurbatov, A.V., Dunbar, N.W., and McIntosh, W.C., 2011, The last interglacial as represented in the glaciochemical record from Mount Moulton Blue Ice Area, West Antarctica: Quaternary Science Reviews, v. 30, p. 1940-1947.

Oppenheimer, C., Moretti, R., Kyle, P.R., Eschenbacher, A., Lowenstern, J.B., Hervig, R.L., and Dunbar, N.W., 2011, Mantle to surface degassing of alkalic magmas at Erebus volcano, Antarctica: Earth and Planetary Science Letters, v. 306, p. 261-271.

Phillips, F.M., McIntosh, W.C., and Dunbar, N.W., 2011, Chronology of late Cenozoic volcanic eruptions onto relict surfaces in the south-central Sierra Nevada, California: Geological Society of AMerica Bulletin, v. 123, p. 890-910.

White, R.J., Spinelli, G.A., Mozley, P.S., and Dunbar, N.W., 2011, Importance of volcanic glass alteration to sediment stabilization: offshore Japan: Sedimentology, v. 58, p. 1138-1154.

Geologic Maps (OF-GMs and GMs)

Books (written or edited)

Papers Presented at Professional Meetings

See links to abstracts at: http://geoinfo.nmt.edu/staff/dunbar/publications/home.html

Antibus, J.V., Panter, K., Wilch, T., Blusztajn, J., Dunbar, N.W., and McIntosh, W., 2011, A meteoric water source for the formation of hyaloclastites at Minna Bluff, Ross Sea, Antarctica: A petrographic, geochemical and isotopic (Sr & O) investigation: 11th International Symposium on Antarctic Earth Sciences, 10-16 July, Edinburgh, Scotland, p. PO5.6.

Dunbar, N.W., Kurbatov, A.V., McIntosh, W., and Koffman, B.G., 2011, Antarctic tephrochronology: From visible layers to cryptotephra: 11th International Symposium on Antarctic Earth Sciences, 10-16 July, Edinburgh, Scotland, p. PS5.12.

Dunbar, N.W., Kurbatov, A.V., and McIntosh, W.C., 2011, A Maturing Tephra Record in the West Antarctic Ice Sheet: Abstract presented at 2011 Fall Meeting, AGU, San Francisco, Calif, 5-9 Dec., v. V11D-2538 p. V11D-2538.

—, 2011, A Rich Tephra Record in the WAIS Divide (WDC06A) Ice Core: WAIS Divide Science Meeting, Sept. 28-29, 2011, La Jolla, CA, p. 21.

Dunbar, N.W., Panter, K., Scanlan, M., Fargo, A., McIntosh, W., and Wilch, T., 2011, Petrogenesis of alkaline magmas at Minna Bluff, Antarctica: evidence for high pressure fractionation and complex mixing processes: 11th International Symposium on Antarctic Earth Sciences, 10-16 July, Edinburgh, Scotland, p. PO5.10.

Goff, F., Dunbar, N.W., Kelley, S.A., Peters, L., McIntosh, W., Heizler, L.L., and Goff, C.J., 2011, Three Rivers Stock and Palisades Tuff: Correlating Intrusive Source with Ignimbrite Sheet in the Tectonically Disrupted Sierra Blanca Igneous Complex, New Mexico: 2011 Geological Society of America Annual Meeting, Minneapolis, NM (9-12 October 2011), v. Paper No. 272-5.

Koffman, B.G., Kreutz, K.J., Breton, D.J., Dunbar, N.W., and Kurbatov, A.V., 2011, Depositional phasing of volcanic aerosols in the WAIS Divide ice core over the past 2400 years: Abstract presented at 2011 Fall Meeting, AGU, San Francisco, Calif, 5-9 Dec., v. V11D-2539.

Kreutz, K.J., Koffman, B.G., Breton, D.J., Dunbar, N.W., and Kurbatov, A.V., 2011, Seasonal to centennial-scale variability of microparticle concentration and size distribution in the WAIS Divide ice core over the past 2.4 ka: Abstract presented at 2011 Fall Meeting, AGU, San Francisco, Calif, 5-9 Dec., v. PP23B-1846.

Kyle, P., Dunbar, N.W., and Pearce, N.J.G., 2011, The Quaternary volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core: 11th International Symposium on Antarctic Earth Sciences, 10-16 July, Edinburgh, Scotland, p. PO5.12.

Panter, K., Dunbar, N.W., Scanlan, M., Wilch, T., Fargo, A., and McIntosh, W., 2011, Petrogenesis of alkaline magmas at Minna Bluff, Antarctica: evidence for multi-stage differentiation and complex mixing processes: Abstract presented at 2011 Fall Meeting, AGU, San Francisco, Calif, 5-9 Dec., v. V31F-2590.

Wilch, T., McIntosh, W., Panter, K., Dunbar, N.W., Smellie, J.L., Fargo, A., Ross, J.I., Antibus, J.V., and Scanlan, M., 2011, Two-stage growth of the Late Miocene Minna Bluff Volcanic Complex, Ross Embayment, Antarctica: implications for ice-sheet and volcanic histories: Abstract presented at 2011 Fall Meeting, AGU, San Francisco, Calif, 5-9 Dec., v. V31F-2591.

Wilch, T., Panter, K., McIntosh, W., Dunbar, N., Smellie, J.L., Fargo, A., Ross, J., Antibus, J.V., Scanlan, M., and Zimmerer, M.J., 2011, Late Miocene evolution of the Minna Bluff Volcanic Complex, Ross Embayment, Antarctica: 11th International Symposium on Antarctic Earth Sciences, 10-16 July, Edinburgh, Scotland, p. PS5.10.

Reports and Miscellaneous Publications (Unpublished reports; include reports of contract research; open-file reports etc.)

 Ancient Tsunamis from Meteorite Impacts:  Evidence, Interpretation, Modeling and Controversy
Written for Lite Geology

                                                                                                        
Journals Edited

Seminars and/or Speaking Engagements

Research Contracts and Grants Awarded (only title, not amounts to be posted on internet)

-NSF-ANT-1142115.  Tephrochronology of the WAIS Divide Ice Core:  Linking ice cores through volcanic records
-USGS-MRERP- Rare Earth Element (REE) potential and origin of the Cambrian-Ordovician syenite/episyenites in the Caballo and Burro Mountains, southern New Mexico.

Research Contracts and Grants Proposed

Awards and Other Recognitions

Service on Graduate Student Committees (list student and title of project and if you are major supervisor)
Committee member for Jake Ross (MS). Chronology of the ANDRILL core
Committee member for Shasta Marrero (PhD).  Cosmogenic investigations as part of CHRONOS project.
Committee member for Bess Koffman (PhD).  Investigation of Fe particulates in the WAIS Divide ice core (University of Maine).
Committee member for Melissa Kammerer (MS)  Investigation of Mount Erebus salts
Committee member for Nels Iverson (MS)  Investigation of Mount Erebus tephra
Committee member for Vyoma Nenuji (PhD) Investigation of carbonate development in soils.
Committee member for John Nybo (MS).  Investigation of geochronology of the Navajo Volcanic field

Courses Taught

Theory and Practice of Electron Microprobe Analysis (GEOC 589). Fall 2011

Assisted in A. Campbell’s “Stable Isotope” classes

 Continuing Education Courses Given/Taken

Service on Institute Committees

Service in Professional Societies   (it is your choice whether you wish to include this information on internet site)

• Member of New Mexico Geological Society executive committee (Vice President)
• Member of American Geophysical Union
• Member of the Mineralogical Society of America
• Member of Microbeam Analysis Society
• Member of New Mexico Microbeam Users Group

Service on Commissions/Councils/Boards

Bureau Service Projects Active This Period

• On committee for selecting LIMS system for Bureau laboratories
• Participated in field trip for legislators (Feb, 2010)
• Attended NMT cabinet meeting (July, 2010)
• Bureau representative for Bureau/EES seminar series
• One of organizers for Bureau “Relay for Life” team
• On search committee for Bureau Director Member of building committee
• Associate Director for laboratories
• Adjunct in EES Department
• Maintenance of Electron Microprobe and Carrizozo Malpais Bureau web pages
• Bureau Equipment Committee member
• Member of the Geological Editorial Board for Lite Geology
• Assisting numerous Bureau researchers and students with sample preparation for, and collection and presentation of electron microprobe and scanning electron microscope analyses.
• Providing tours of the electron microprobe facility for New Mexico Tech alumni, New Mexico Tech classes, and visiting educational groups.
• Answering various phone calls and other inquiries about volcanoes, earthquakes, and other aspects of New Mexico geology
• Provided letters of support and information for Bureau proposals, particularly relative to electron microprobe laboratory.

Research Projects Active This Period

• Tephrochronology, chemical fingerprinting, and correlation of tephra layers in ancestral Rio Grande sediments. (in conjunction with D. Love, S. Connell, S. Cather, W. McIntosh, and others)
• Tephrochronology of the South Pole SPRESSO Core. (NSF funded)
• Tephrochronology of the WAIS Divide Core.  (NSF funded)
• Tephrochronology of the ANDRILL Core. (NSF funded)
• Investigation of the volcanic geology of Minna Bluff, Antarctica (NSF funded)
• Detrital monazite geochronology of Ortega quartzite clasts in Pennsylvanian strata of the Northern Truchas uplift, Northern New Mexico: implications for the slip history of the Picuris-Pecos fault
• Investigation of Lake Mead area tephrochronology (NSF funded)
• Investigation of field and geochemical characteristics of early pyroclastic deposits from Mt. Taylor (in conjunction with S. Kelley, F. Goff and B. McIntosh)
• Chemical composition of the Quilitoa caldera  (Ecuador) pyroclastic eruptions (in conjunction with P. Mothes, Ecuador Geophysical Institute)

Public Service/Education and Outreach

• Involved in instruction for Lycee Rochambeau geology field trip (March 2011)
• Participated in E&ES graduate student recruitment weekend (March 2011).  Gave several lab tours as part of visit.
• Judged at New Mexico State Science Fair (April, 2011)
• Assisted NPS with a scoping meeting at Capulin Volcano (May 2011)
• Taught parts of Rockin’ Around New Mexico (July 2011)
• Presented a talk about research in Ethiopia to the Socorro Rotarians (July 2011)
• Gave presentation about Antarctica and Antarctic research to high school class groups at La Cueva High School, in Albuquerque (Sept 2011)

         
Papers and Proposals Reviewed
A number of papers and proposals reviewed for journals and NSF.  Also, a book proposal reviewed for Cambridge University Press.