Investigator’s Annual Reports (IAR’s) for Crater Lake National Park
Source constraints for growth of continental arcs based on Re-Os isotope fractionation
Report Number: 12842
Permit Number: CRLA1998HART
Date Received: Jan 01, 1999
Reporting Year: 1998
Principal Investigator: Garret L. Hart, University of Wisconsin-Madison, Department of Geology and Geophysics, Madison, WI
Additional investigator(s): Charlie Bacon, Clark Johnson
Park-assigned Study Id. # CRLA1998HART
Permit Expiration Date: Jan 01, 2000
Permit Start Date: Jan 01, 1998
Study Starting Date: Jan 01, 1998
Study Ending Date: Jan 01, 2000
Study Status: Completed
Activity Type: Research
Subject/Discipline: Geochemistry (inc. Minerals / Petrology)
Objectives: The main objective is to determine the relative amounts of crustal versus mantle material incorporated into magmas rising through the crustal column in continental arc systems. Lassen Volcanic NP occupies the southern end of the Cascade range and the volcanic rocks found there represent mantle derived magma rising through crustal material.
Findings and Status: Field work was conducted during the summer of 1998, with thirteen samples collected. Samples are currently being processed and prepared for isotopic analysis.
For this study, were one or more specimens collected and removed from the park but not destroyed during analyses? No
Funding provided this reporting year by NPS: 0
Funding provided this reporting year by other sources: 2200
Full name of college or university: n/a
Annual funding provided by NPS to university or college this reporting year: 0
***previous*** — ***next***
