학술논문
Continentalization of an intraoceanic arc as exemplified by the Jurassic Bonanza Arc of Vancouver Island, Canada
Document Type
Academic Journal
Author
Source
Geological Society of America Bulletin. 136(1-2):880-892
Subject
Language
English
ISSN
0016-7606
Abstract
We present new U-Pb zircon ages, bulk rock chemistry, and field observations for volcanic and plutonic rocks of the Jurassic Bonanza arc of Vancouver Island, Canada, a proposed southern extension of the Talkeetna arc crustal section in Alaska. Rather than a synchronous and contiguous arc crustal section, the new field and geochronological data reveal three distinct periods in the arc development, wherein the oldest, "prima" (205-195 Ma), was built upon by the youngest, "dopo" (