WebDevonian Copley Greenstone separated from the underlying Trinity terrane by an undulating extensional fault and preserved by oblique down-dropping on NW-NE ... compared to ultramafic compositional values, supporting a mixing of upper and lower plate components. Fault outcrop characteristics include mylonite, foliated fault breccia zones, and WebJun 1, 1984 · Age A number of ages that relate both to the igneous/metamorphic and emplacement history of the Trinity ultramafic sheet have been published. U-Pb dating on zircons from quartz diorite and trondhjemite belonging to the Trinity complex was reported in an abstract by Mattinson and Hopson [27]. The U-Pb data yields concordia intercept …
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WebProduction of a game sheet for stats, App & Web development / updating, Running out bi-weekly e-news… Show more Varied role over many years incorporating the following, … WebThe Trinity ultramafic sheet dips to the east and is several miles thick. It consists of harzburgite, dunite, and· plagioclase lherzolite with minor amounts of other ultramafic rocks, frequently emplaced as dikes (Quick, 1981b). The degree of serpentinization of. the ultramafic rock varies cj notation\u0027s
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WebAt their base, the eastern Klamath Mountains consist of the Ordovician Trinity ultramafic tectonite sheet (472 m.y.; Jacobsen and others, 1984), a 2-to 4-km-thick easterly dipping body, ... WebName. Ultramafic rocks, chiefly Mesozoic, unit 1 (Trinity Ophiolite) Geologic age. Ordovician. Lithologic constituents. Major. Igneous > Plutonic > Ultramafic > Peridotite … USGS Open-File Report 2005-1305. Preliminary integrated geologic map … Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath … General Information. Title: Geologic map of California Author(s): Jennings, C.W., … WebOphiolite, the Rattlesnake Creek Terrane, and the Trinity Ultramafic Sheet, all major ultramafic features of the Klamath Ranges (Irwin 1989, Kierstead 2024 pers. comm.). Eighteen of the 21 California records are located on … cjn justice