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- W4310059420 abstract "Abstract Detrital zircon from Late Cretaceous rocks of the Insular Superterrane have become an important constraint on Cordilleran paleogeography. These interpretations are largely based on the occurrence of a unique detrital zircon facies characterized by a broad Paleoproterozoic (mode 1.70 Ga) and narrow Mesoproterozoic mode (1.38 Ga) in Cordilleran sedimentary rocks. However, uncertainty about the provenance of this facies and the broad geographic distribution of rocks in which it is found limits its usefulness in constraining paleogeography. Detrital rims found on Mesozoic, Proterozoic, and Archean‐aged zircon cores from the Late Cretaceous Nanaimo Group of Western British Columbia, Canada provide constraints into its provenance. Depth‐profiling of a large population of grains ( N = 16; n = 3,000), combined with observations regarding zircon external morphology, internal growth textures, U/Th ratios, and U concentrations, indicate high‐grade metamorphism occurred in the sediment source area between 99 Ma and 72 Ma. Rapid cooling of the metamorphic source area at rates of 35 to over 100°C/m.y. between 84 and 63 Ma was required to supply these metamorphic zircon to the basin. The geological history of the sediment source region defined by the rim populations (age of metamorphism and exhumation rate) is inconsistent with previously proposed sediment source areas for the Nanaimo Group in southern (Mojave region) or northern Laurentia (Lehmi Subbasin). We hypothesize that the sediment source area was the adjacent Coast Mountains Batholith and a metasedimentary rock, similar to the Pelona‐Orocopia‐Rand‐type schists, that was exhumed during the Late Cretaceous." @default.
- W4310059420 created "2022-11-30" @default.
- W4310059420 creator A5049056110 @default.
- W4310059420 creator A5055110558 @default.
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- W4310059420 creator A5080228906 @default.
- W4310059420 date "2022-12-01" @default.
- W4310059420 modified "2023-09-26" @default.
- W4310059420 title "Improved Provenance Constraints for Nanaimo Group Sediments, British Columbia, Canada, Through Zircon LA‐ICP‐MS Depth‐Profiling" @default.
- W4310059420 cites W1492454564 @default.
- W4310059420 cites W1495526948 @default.
- W4310059420 cites W1504002771 @default.
- W4310059420 cites W1521262137 @default.
- W4310059420 cites W161936499 @default.
- W4310059420 cites W1624599660 @default.
- W4310059420 cites W1643869214 @default.
- W4310059420 cites W1649175282 @default.
- W4310059420 cites W1672791581 @default.
- W4310059420 cites W1823593429 @default.
- W4310059420 cites W1888997480 @default.
- W4310059420 cites W1965199962 @default.
- W4310059420 cites W1965425556 @default.
- W4310059420 cites W1966587750 @default.
- W4310059420 cites W1969886200 @default.
- W4310059420 cites W1970270960 @default.
- W4310059420 cites W1972019729 @default.
- W4310059420 cites W1973448891 @default.
- W4310059420 cites W1978862323 @default.
- W4310059420 cites W1979163934 @default.
- W4310059420 cites W1979480381 @default.
- W4310059420 cites W1979595776 @default.
- W4310059420 cites W1981417929 @default.
- W4310059420 cites W1981829791 @default.
- W4310059420 cites W1983132684 @default.
- W4310059420 cites W1984475252 @default.
- W4310059420 cites W1985209625 @default.
- W4310059420 cites W1985647492 @default.
- W4310059420 cites W1986560096 @default.
- W4310059420 cites W1987135569 @default.
- W4310059420 cites W1987168011 @default.
- W4310059420 cites W1989194022 @default.
- W4310059420 cites W1995766312 @default.
- W4310059420 cites W1997986099 @default.
- W4310059420 cites W1998994144 @default.
- W4310059420 cites W1999602453 @default.
- W4310059420 cites W2001586419 @default.
- W4310059420 cites W2004164683 @default.
- W4310059420 cites W2005036203 @default.
- W4310059420 cites W2006593362 @default.
- W4310059420 cites W2006669798 @default.
- W4310059420 cites W2009604421 @default.
- W4310059420 cites W2014095924 @default.
- W4310059420 cites W2015419319 @default.
- W4310059420 cites W2018449004 @default.
- W4310059420 cites W2020106607 @default.
- W4310059420 cites W2020139762 @default.
- W4310059420 cites W2026039423 @default.
- W4310059420 cites W2026067877 @default.
- W4310059420 cites W2027209394 @default.
- W4310059420 cites W2029602159 @default.
- W4310059420 cites W2030438008 @default.
- W4310059420 cites W2030958259 @default.
- W4310059420 cites W2032698644 @default.
- W4310059420 cites W2033851300 @default.
- W4310059420 cites W2035341520 @default.
- W4310059420 cites W2036174339 @default.
- W4310059420 cites W2039399738 @default.
- W4310059420 cites W2039712160 @default.
- W4310059420 cites W2039872199 @default.
- W4310059420 cites W2040278389 @default.
- W4310059420 cites W2040585759 @default.
- W4310059420 cites W2043700280 @default.
- W4310059420 cites W2049249034 @default.
- W4310059420 cites W2049636621 @default.
- W4310059420 cites W2050845223 @default.
- W4310059420 cites W2051273227 @default.
- W4310059420 cites W2052448030 @default.
- W4310059420 cites W2052639207 @default.
- W4310059420 cites W2052973516 @default.
- W4310059420 cites W2060244969 @default.
- W4310059420 cites W2060313404 @default.
- W4310059420 cites W2062440282 @default.
- W4310059420 cites W2063091092 @default.
- W4310059420 cites W2064495722 @default.
- W4310059420 cites W2068131332 @default.
- W4310059420 cites W2068403951 @default.
- W4310059420 cites W2068915671 @default.
- W4310059420 cites W2071528300 @default.
- W4310059420 cites W2072405676 @default.
- W4310059420 cites W2074466617 @default.
- W4310059420 cites W2075694434 @default.
- W4310059420 cites W2080723705 @default.
- W4310059420 cites W2081414947 @default.
- W4310059420 cites W2082145227 @default.
- W4310059420 cites W2084955401 @default.
- W4310059420 cites W2085480428 @default.
- W4310059420 cites W2085881329 @default.
- W4310059420 cites W2087113250 @default.
- W4310059420 cites W2087470623 @default.
- W4310059420 cites W2087531395 @default.