2005. "Field Guide", Incremental assembly and emplacement of Mesozoic plutons in the Sierra Nevada and White and Inyo ranges, California, Drew S. Coleman, John M. Bartley, Allen F. Glazner, Richard D. Law
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This field guide does not include a detailed road log. Instead, locations are identified relative to prominent landmarks, intersections and trailheads (Figs. 2, 3). Each day of the trip centers around one or two traverses that are numbered according to day-traverse-station – thus Station 2.1C is day 2, traverse 1, third station. Each station along the traverse is indicated by Universal Transverse Mercator (UTM) coordinates, North American Datum, Continental US 1927 (NAD 27 CONUS), zone 11. The average magnetic declination in this part of the world is 15°E. Road distances are given in miles in deference to American odometers. In all photos, compasses are oriented to north unless otherwise noted.
Each day of the trip is introduced with short summaries of the goals for the day, and the regional background geology. The Sierra Nevada batholith and White – Inyo range have been the subjects of intense geologic research for more than a century. Whereas this provides a huge foundation on which to build new hypotheses for pluton emplacement, it also makes it impossible to summarize that foundation within a single field guide. Consequently, we focus here on research that we believe is most relevant to the goals of the trip and apologize to those who feel we have omitted some key point of interest.
Figures & Tables
Incremental assembly and emplacement of Mesozoic plutons in the Sierra Nevada and White and Inyo ranges, California
This field guide was created in coordination with the Geological Society of America Field Forum “Rethinking the Assembly and Evolution of Plutons: Field Tests and Perspectives,” held 7-14 October 2005 in the Sierra Nevada and White and Inyo ranges, California. The goal of this five-day field trip was to examine field relations and characteristics of plutons in the central Sierra Nevada and in the White and Inyo ranges as they relate to processes of pluton growth and emplacement and, more particularly, as they relate to the hypothesis that plutons are assembled slowly and incrementally.