ZONING OF THE WILLOW CREEK PLUTON, HATCHER PASS
Mine State Historical Park. Field assistance was provided by Tina Westfall, Gabby Bejarano, Fred Transburg, and Rachel Carraway. Brittany Meagher provided assistance with ArcGIS and Adobe Photoshop.
References
Bateman, P.C., 1992, Plutonism in the central part of the Sierra Nevada batholith, California: U.S. Geological Survey Professional Paper, v. 1483, 186 p.
Bateman, P.C., and Chappell, B.W., 1979, Crystallization, fractionation, and solidification of the Tuolumne Intrusive Series, Yosemite National Park, California: Geological Society of America Bulletin, v. 90, p. 465–482.
Bleick, H.A., Till, A.B., Bradley, D.C., O’Sullivan, P.B., Wooden, J.L., Bradley, D.B., Taylor, T.A., Friedman, S.B., and Hults, C.P., 2012, Early Tertiary exhumation of the flank of a forearc basin, southwest Talkeetna Mountains, Alaska: U.S. Geological Survey Open-File Report 2012– 1232 (Available at
http://pubs.usgs.gov/of/2012/1232/).
Capps, S.R., 1914, Gold lodes and placers of the Willow Creek district: U. S. Geol. Survey Bull. 592-H, p. 245-272.
Colpron, M., and Nelson, J.L., 2011. A Digital Atlas of Terranes for the Northern Cordillera. BC GeoFile 2011-11.
Colpron, M., and Nelson, J.L., Murphy, D.C., 2007, Northern Cordilleran terranes and their interactions through time: GSA Today, v. 17, no. 4/5, p. 4-10.
DeBari, S.M., and Coleman R.G., 1989, Examination of the deep levels of an island arc: Evidence from the Tonsina ultramafic-mafic assemblage Tonsina, Alaska: Journal
of Geophysical Research, 94, 4373–4391, doi:10.1029/ JB094iB04p04373.
Greene, A.R., DeBari, S.M., Kelemen, P.B., and Clift, P.D., 2006, A detailed geochemical study of island arc crust: The Talkeetna arc section, south-central Alaska: Journal of Petrology, 47(6), 1051–1093, doi:10.1093/petrology/ egl002.
Harlan, S.S., Snee, L.W., Vielreicher, R.M., Goldfarb, R.G., Mortensen, J., and Bradley, D.C., 2003, Age and cooling history of gold deposits and host rocks in the Willow Creek mining district, Talkeetna Mountains, south-central Alaska: Geological Society of America Abstracts with programs, v. 35, no. 6, p. 235.
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David A. Meagher and Erin Shea, Department of Geological Sciences, University of Alaska Anchorage, 3211 Providence Dr. Anchorage, AK 99508
INTRAW scenario workshop: the world of raw materials in 2050
PRESS RELEASE | BRUSSELS | DECEMBER 2016 – In the framework of the first EU raw materials week, the INTRAW project consortium organized, on 30 November 2016, a scenario workshop in Brussels where three sce- narios describing the world of raw materials in 2050 were discussed.
The EU-funded INTRAW project was launched in early 2015 with the aim of mapping best practices and boosting coopera- tion opportunities related to raw materials between the EU and five technologically advanced non-EU countries (Australia, Canada, Japan, South Africa and the United States).
In a truly cooperative approach, the INTRAW project has recently developed three scenarios that describe the world of raw materials in 2050. After having elaborated the scenarios in a series of workshops run by the European participants of the project consortium in mid-2016, the current version of the scenarios was discussed in Brussels with more than 30 participants during the EU Raw Materials Week that took place in Brussels from 28 November to 2 December 2016. Participants from various nationalities and backgrounds – including researchers, policy-makers, and raw materials practitioners – had the opportunity to learn more about the scenarios, to provide their perspectives and to discuss the plausibility of alternate futures.
Given the current uncertainties that global politics have to deal with, scenarios are an excellent means to prepare for the future and to safeguard against developments that are not desirable, but yet still plausible. The workshop results will help to refine the scenario story lines and to make them more robust. The final scenarios, named “Unlimited Trade”, “Sustainability Alliance” and “National Walls”, will be available through the INTRAW website in early 2017.
The workshop was also an excellent opportunity to raise awareness for the launch of the International Observatory for Raw Materials which is foreseen for 2017/2018. The Observatory will be a permanent international body that will remain operational after the end of the project aiming at the establishment and maintenance of strong long-term relationships with the world’s key players in raw materials technology and scientific developments.
www.aipg.org
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