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Alison B. Till

Title: Research Geologist
Address: 4210 University Dr., Anchorage, AK 99508-4626
Phone: (907) 786-7444
Fax: (907) 786-7401
Email: atill@usgs.gov

Image of Alison B. Till

Education and/or Training

Ph.D.1994University of Washington, Seattle WAGeology
M.S.1980University of Washington, Seattle WAGeology
A.B.1976University of California, Santa Cruz CAGeology

Areas of Specialization and/or Research Interests

Metamorphic petrology and structural geology; tectonics; thermochronology.

Current research projects (task leader):
1) Investigation of the syngenetic massive sulfide (Pb-Zn-Cu) potential of the Nome Group, an extensive metamorphic unit on the Seward Peninsula, Alaska, and
2) Reconstruction of the Late Proterozoic and Paleozoic continental margin protolith of the Nome Group and its likely geologic context Results of these related investigations will be presented in a multi-chapter volume with papers on geology, stratigraphy, economic geology, stable and radiogenic isotope geochemistry, and U-Pb zircon geochronology and detrital geochronology
3) Late Proterozoic to Devonian paleogeograpy of Arctic Alaska (abstract presented at 2010 GSA Annual Meeting and Alaska Geological Society December luncheon)

Professional Experience

2001 - presentResearch Geologist, USGS Alaska Science Center, Anchorage AK
1996 - 2001Supervisory Geologist, USGS, Anchorage AK
1980 - 1996Research Geologist, USGS, Anchorage AK

Publications

Total pubs: 16

Till, A. B., J. A. Dumoulin, R. A. Ayuso, J. N. Aleinikoff, J. M. Amato, J. F. Slack, and W. C. Shanks, III. 2014. Reconstruction of an early Paleozoic continental margin based on the nature of protoliths in the Nome Complex, northern Alaska. Geological Society of America Special Paper 506. doi:10.1130/2014.2506(01) [Details] [Full Publication]

Bradley, D., W. C. McClelland, R. M. Friedman, P. B. O'Sullivan, P. W. Layer, M. L. Miller, J. A. Dumoulin, A. B. Till, J. L. Wooden, and J. G. Abbott. 2014. Proterozoic geochronological links between the Farewell, Kilbuck and Arctic Alaska Terranes. Journal of Geology 122. doi:10.1086/675663 [Details] [Full Publication]

Dumoulin, J. A. and A. B. Till. 2014. Reconstruction of a Late Proterozoic to Devonian Continental Margin Sequence, Northern Alaska, its Paleogeographic Significance and contained base-metal sulfide deposits. Geological Society of America Special Paper 506. [Details] [Full Publication]

Till, A. B., J. A. Dumoulin, M. B. Werdon, and H. A. Bleick. 2011. Bedrock geologic map of the Seward Peninsula, Alaska, and accompanying conodont data. USGS Scientific Investigations Map 3131, 75 p. [Details] [Full Publication]

Till, A. B., J. A. Dumoulin, M. B. Werdon, and H. A. Bleick. 2010. Preliminary bedrock geologic map of the Seward Peninsula, Alaska, and accompanying conodont data. USGS Open-File Report 2009-1254, 2 plates, scale 1:500,000, 1 pamphlet, 57 p, and database. [Details] [Full Publication]

Bradley, D. C., P. J. Haeussler, P. B. O'Sullivan, R. M. Friedman, A. B. Till, D. Bradley, and J. Trop. 2009. Detrital zircon geochronology of cretaceous and paleogene strata across the south-central Alaskan convergent margin. USGS Professional Paper 1760-F, 36 p. [Details] [Full Publication]

Till, A. B., J. A. Dumoulin, A. G. Harris, T. E. Moore, H. A. Bleick, B. R. Siwiec, K. A. Labay, F. H. Wilson, and N. B. Shew. 2008. Digital data for the geology of the southern Brooks Range, Alaska. USGS Open-File Report 2008-1149, 21 p. [Details] [Full Publication]

Till, A. B., J. A. Dumoulin, A. G. Harris, T. E. Moore, H. A. Bleick, and B. R. Siwiec. 2008. Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data. USGS Open-File Report 2008-1149, 1 pamphlet, 2 sheets, scale 1:500,000, 71 p. [Details] [Full Publication]

Till, A. B., S. M. Roeske, D. C. Bradley, R. M. Friedman, and P. W. Layer. 2007. Early Tertiary transtension-related deformation and magmatism along the Tintina fault system, Alaska. Geological Society of America Special Paper 434:233-264. [Details] [Full Publication]

Till, A. B., S. M. Roeske, D. A. Foster, J. Sample, and (eds.). 2007. Exhumation and continental strike-slip fault systems. Geological Society of America Special Paper 434. [Details]

Till, A. B., A. G. Harris, B. R. Wardlaw, and M. Mullen. 2007. Upper Triassic continental margin strata of the central Alaska Range: implications for paleogeographic reconstruction. Geological Society of America Special Paper 431:191-205. [Details] [Full Publication]

Till, A. B., J. A. Dumoulin, J. D. Phillips, R. G. Stanley, and J. Crews. 2006. Generalized Bedrock Geologic Map, Yukon Flats region, East-central Alaska. USGS Open-File Report 2006-1304, 1 sheet, scale 1:500,000. [Details] [Full Publication]

Bradley, D. C., R. M. Friedman, P. W. Layer, P. J. Haeussler, A. B. Till, S. M. Roeske, and M. L. Miller. 2006. Far-field effects of early Tertiary ridge subduction in Alaska. Geological Society of America Abstracts with Programs Specialty Meeting No 2:91. [Details] [Full Publication]

Till, A. B. and J. A. Dumoulin. 1994. Geology of Seward Peninsula and Saint Lawrence Island. Geological Society of America, The Geology of North America, DNAG G1:141-152. [Details]

Till, A. B., J. A. Dumoulin, B. M. Gamble, D. S. Kaufman, and P. I. Carroll. 1986. Preliminary geologic map and fossil data, Solomon, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska. USGS Open-File Report 86-276, 71 p. of text with interpretations. [Details]

Dumoulin, J. A. and A. B. Till. 1985. Sea cliff exposures of metamorphosed carbonate and schist, northern Seward Peninsula. USGS Circular 945, Accomplishments during 1983:18-22. [Details]

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