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| 231-1 | 189 | HIGH-SR MAGNESIAN ANDESITES OF THE RAFFUSE CREEK-MAMQUAM RIVER AREA, SW BRITISH COLUMBIA: EVIDENCE FOR MULTISTAGE EVOLUTION OF HYDROUS MANTLE MELTS: POWELL, James H. Jr, Geological Sciences, Univ of Alabama, 202 Bevill Building, Tuscaloosa, AL 35487-0338, powel003@bama.ua.edu and GREEN, Nathan L., Department of Geological Sciences, The Univ of Alabama, 202 Bevill Building, Tuscaloosa, AL 35487-0338 |
| 231-2 | 190 | RELATION OF CONVERGENT MARGIN VOLCANISM TO SLAB AGE AND THERMAL STRUCTURE: POSSIBLE INFLUENCES ON ANDESITIC MAGMATISM OF THE NORTHERN CASCADIA SUBDUCTION SYSTEM: GREEN, Nathan L., Department of Geological Sciences, The Univ of Alabama, 202 Bevill Building, Tuscaloosa, AL 35487-0338, ngreen@wgs.geo.ua.edu. |
| 231-3 | 191 | NEW RESULTS FROM A PROPOSED PBO CASCADE VOLCANO CLUSTER III: POST-ERUPTIVE DEFORMATION OF MOUNT ST. HELENS, WASHINGTON, FROM EDM AND GPS: LISOWSKI, Michael, DZURISIN, Daniel, ENDO, Elliot, IWATSUBO, Eugene, and POLAND, Michael, Cascades Volcano Observatory, US Geol Survey, 1300 SE Cardinal Ct., Suite 100, Vancouver, WA 98683-9589, mlisowski@usgs.gov |
| 231-4 | 192 | REMOTE SENSING AS A TOOL FOR GEOLOGIC MAPPING AT MOUNT ST. HELENS, WASHINGTON: ROBINSON, Joel E.1, ROBINSON, Joel E.1, RAMSEY, David W.1, CLYNNE, Michael A.1, SCHILLING, Steve P.2, and THOMPSON, Ren A.3, (1) Volcano Hazards Team, U. S. Geol Survey, 345 Middlefield Road, MS 910, Menlo Park, CA 94025, jrobins@usgs.gov, (2) Cascade Volcano Observatory, U. S. Geol Survey, 1300 SE Cardinal Court, Building 10 Suite 100, Vancouver, WA 98683, (3) U. S. Geol Survey, Box 25046 MS 913, Denver Federal Center, Denver, CO 80225 |
| 231-5 | 193 | INSAR ANALYSIS OF SURFACE DEFORMATION AT MOUNT ST. HELENS, WASHINGTON: DIEFENBACH, Angela K., Geological Sciences, Central Washington Univ, 400 East 8th Avenue, Ellensburg, WA 98926, angiedbach@hotmail.com and POLAND, Michael P., Cascades Volcano Observatory, US Geol Survey, 1300 Cardinal Ct. Suite 100, Vancouver, WA 98683-9589 |
| 231-6 | 194 | GEOPHYSICAL INVESTIGATIONS OF THE CASCADE SUBDUCTION ZONE, NORTH AMERICA: ROMANYUK, Tanya1, MOONEY, Walter D.2, and BLAKELY, Richard2, (1) Institute of Physics of the Earth, B Gruzinskaya 10, Moscow, 123810, Russia, mooney@usgs.gov, (2) USGS, 345 Middlefield Rd, MS 977, Menlo Park, CA 94025 |
| 231-7 | 195 | ERUPTIVE STYLE AND HISTORY OF MOUNT HOOD VOLCANO, OREGON: SCOTT, W.E.1, GARDNER, C.A.1, TILLING, R.I.2, and LANPHERE, M.A.2, (1) U.S. Geol Survey, 1300 SE Cardinal Court, Vancouver, WA 98683, wescott@usgs.gov, (2) U.S. Geol Survey, 345 Middlefield Rd, Menlo Park, CA 94025 |
| 231-8 | 196 | TWO YOUNG SILICIC SISTERS AT THREE SISTERS VOLCANIC FIELD, OREGON: FIERSTEIN, Judy1, CALVERT, Andrew2, and HILDRETH, Wes1, (1) U.S. Geol Survey, 345 Middlefield Road, MS-910, Menlo Park, CA 94025, jfierstn@usgs.gov, (2) U.S. Geol Survey, 345 Middlefield Road, MS-937, Menlo Park, CA 94025 |
| 231-9 | 197 | THE PERSISTENCE OF NORTH SISTER BASALTIC ANDESITE AND IMPLICATIONS FOR DEEP CRUSTAL PROCESSES IN THE CENTRAL OREGON HIGH CASCADES: SCHMIDT, Mariek E., Department of Geosciences, Oregon State Univ, Corvallis, OR 97331, schmidtm@geo.orst.edu and GRUNDER, Anita L., Geosciences, Oregon State Univ |
| 231-10 | 198 | NEW RESULTS FROM A PROPOSED PBO CASCADE VOLCANO CLUSTER II: INSAR, GPS, AND TILT-LEVELING DATA FROM THE THREE SISTERS AREA, CENTRAL OREGON: DZURISIN, Daniel1, ENDO, Elliot1, IWATSUBO, Eugene1, LISOWSKI, Michael1, POLAND, Michael1, and WICKS, Charles Jr2, (1) Cascades Volcano Observatory, US Geol Survey, 1300 SE Cardinal Ct., Suite 100, Vancouver, WA 98683-9589, dzurisin@usgs.gov, (2) U.S. Geol Survey, 345 Middlefield Road, Mail Stop 977, Menlo Park, CA 94025 |
| 231-11 | 199 | MEDICINE LAKE VOLCANO: RESULTS OF GEOLOGIC MAPPING AND ARGON DATING: DONNELLY-NOLAN, Julie M., U.S. Geological Survey, 345 Middlefield Road, MS 910, Menlo Park, CA 94025, jdnolan@usgs.gov, LANPHERE, Marvin A., U.S. Geol Survey, 345 Middlefield Rd, Menlo Park, CA 94025, and RAMSEY, David W., U.S. Geol Survey, 345 Middlefield Rd, MS 910, Menlo Park, CA 94025 |
| 231-12 | 200 | NEW RESULTS FROM A PROPOSED PBO CASCADE VOLCANO CLUSTER I: DEFORMATION IN THE MEDICINE LAKE REGION OF NORTHEAST CALIFORNIA FROM LEVELING, GPS, AND INSAR: POLAND, Michael1, DZURISIN, Daniel1, HAMMOND, William2, ENDO, Elliot1, IWATSUBO, Eugene1, and LISOWSKI, Michael1, (1) Cascades Volcano Observatory, US Geol Survey, 1300 SE Cardinal Ct., Suite 100, Vancouver, WA 98683-9589, mpoland@usgs.gov, (2) US Geol Survey, 345 Middlefield Road, MS 977, Menlo Park, CA 94025 |
| 231-13 | 201 | OXYGEN ISOTOPE CONSTRAINTS ON MAGMATIC EVOLUTION AND SOURCES AT LASSEN VOLCANIC CENTER, CALIFORNIA: FEELEY, Todd C., Dept. Earth Sciences, Montana State Univ, Bozeman, MT 59717, tfeeley@montana.edu, CLYNNE, Michael A., U.S. Geol Survey, 345 Middlefield Road, Mail Stop 910, Menlo Park, CA 94025, and LARSON, Toti, Earth & Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuequerque, NM 87106 |
| 231-14 | 202 | THE MULTIPLE PERSONALITIES OF ZONED CRYSTALS: COMPLEX GROWTH HISTORIES, THE MIXING PHYLOGENY, AND GEOCHRONOLOGY, WITH APPLICATIONS TO THE LASSEN VOLCANIC SYSTEM: WALLACE, Glen and BERGANTZ, George W., Earth Space Sciences, Univ of Washington, Box 351310, Seattle, WA 98195, gsw@u.washington.edu |
| 231-15 | 203 | CONSTRAINTS ON THE TIMESCALES AND MIXING DYNAMICS OF THE MAGMA RECHARGE EVENT ASSOCIATED WITH THE 1915 ERUPTION OF LASSEN PEAK, CALIFORNIA: SALISBURY, Morgan J., Geological Sciences, Central Washington Univ, 400 E 8th Ave, Ellensburg, WA 98926, salisbum@cwu.edu, BOHRSON, Wendy A., Dept. Geol. Sci, Central Washington Univ, Ellensburg, WA 98926, and CLYNNE, Michael A., Volcano Hazards Team, U.S. Geol Survey, 345 Middlefield Rd MS910, Menlo Park, CA 94025 |
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