Silurian plutonism in the Trinity terrane (Neoproterozoic and Ordovician), Klamath Mountains, California, United States
Article Abstract:
A major early Paleozoic shear zone formed in the eastern Klamath Mountains after the Middle Ordovician but before late Silurian plutonism. About one third of the Trinity terrane comprises of Silurian intrusive rocks, which is representative of the roots of an earlier unidentified Silurian magmatic arc. At least one early Paleozoic deformation in the Trinity terrane of northern of northern California is documented by crosscutting relations and U-Pb zircon isotopic data.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1995
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The Amazon-Laurentian connection as viewed from the Middle Proterozoic rocks in the central Andes, western Bolivia and northern Chile
Article Abstract:
Basement rocks in the Central Andes and their connection to possible rifted or equivalent fragments found on other continents are investigated. A U-Pb geochronologic and Pb isotopic study of Middle proterozoic rocks in western Bolivia and northern Chile is performed. Data show that Middle proterozoic rocks in the Arequipa-Antofalla craton are not reworked or metamorphosed Early Proterozoic rocks of the Arequipa massif.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1996
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Geochronology of the Proterozoic basement of southwesternmost North America, and the origin and evolution of the Mojave crustal province
Article Abstract:
It is hypothesized that the San Bernardino Mountains expose an Early Proterozoic plutonic arc.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 2000
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