Low δ¹⁸O rhyolites and crustal melting: Growth and redistribution of the continental crust

Twin Falls, Idaho, and Yellowstone National Park, Wyoming, USA
9–13 September 2009

Conveners:

Peter Larson: Washington State University, School of Earth and Environmental Sciences, Pullman, Washington 99164-2812, USA,
Ilya Bindeman: University of Oregon, Dept. of the Geological Sciences, 1272 University of Oregon, Eugene, Oregon 97403, USA,
John Wolff: Washington State University, School of Earth and Environmental Sciences, Pullman, Washington 99164-2812, USA,

DESCRIPTION AND OBJECTIVES

In the past several years, there has been a renewed interest in the genesis of low-δ¹⁸O rhyolites and shallow magma genesis. This resurgence has been stimulated by a combination of the application of new analytical techniques and the discovery of voluminous low-δ¹⁸O rhyolites in the Snake River Plain, Idaho, USA. Low-δ¹⁸O rhyolites are important because oxygen is the most abundant element in igneous rocks, and it provides fundamental evidence about crustal processes that form rhyolite magmas.

The meeting will include keynote presentations by HP Taylor, K. Muehlenbachs, C. Harris, and G. Bergantz.

LOGISTICAL INFORMATION

Proposed Itinerary

Tues., 8 Sept.
Arrive in Twin Falls, Idaho, USA.
Wed., 9 Sept.
Overview of Low-δ¹⁸O Magmas: A Historical Prospective
Low-δ¹⁸O Basalts
Thurs., 10 Sept.
The Genesis of Rhyolite Magmas
Snake River Plain Low-δ¹⁸O Rhyolites
Fri., 11 Sept.
Field Trip—Conference moves from Snake River Plain to Yellowstone National Park
Sat., 12 Sept.
Recycling of Rhyolite Magmas
Constraints of Shallow Crustal Melting
Sun., 13 Sept.
Low-δ¹⁸O Rhyolite Sources: Hydrothermal Alteration
Rhyolites: What Now?
Mon., 14 Sept.
Departures from Twin Falls or Bozeman, Montana, USA.

Application

The conference will be limited to about 75 attendees, and participants must apply to attend. Participants will have to commit to attending the full five days of the meeting.

To apply, please e-mail the conveners by Friday, 26 June 2009. The e-mail must include a letter of intent with a brief statement of interests, the relevance of your recent work to the themes of the conference, the subject of your proposed presentation, and contact information. Once you have been selected to participate, we will forward your contact information to GSA, and they will send you detailed registration information. All registration forms are also due by Friday, 26 June 2009.

Attendees and Cost

Participation of graduate students is encouraged, and partial support to attend the meeting is being actively sought by the organizers. Participants must make their own travel arrangements to and from Twin Falls, Idaho, USA. The registration fee is US $1400 per person for double occupancy, to cover six night’s hotel lodging (8–13 September), meals, guidebook, and transportation between Twin Falls, Idaho, and Yellowstone National Park.

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