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- W170858192 endingPage "496" @default.
- W170858192 startingPage "457" @default.
- W170858192 abstract "Oceanic crust is created as magma rises to fill the gap between diverging tectonic plates and is consumed in subduction zones. It is geologically young, with a mean age of 60 Ma, and is thin, averaging 6.5 km in thickness. Oceanic crust consists almost exclusively of extrusive basalt and its intrusive equivalents. This chapter focuses on the roughly 1.5–2 km thick ‘volcanic layer’ consisting of lava flows that overlie the feeder dikes that make up the sheeted dike complex. The basalts of the oceanic crust, referred to as mid-ocean ridge basalts (MORB), are dominantly tholeiitic and are, on average, depleted in incompatible trace elements compared to basalts erupted in other tectonic environments. Isotopic compositions and incompatible trace element concentrations and ratios suggest that their depleted character is inherited from their mantle source and that this source varies in composition both locally and on the scale of ocean basins. Their major element chemistry appears to be controlled primarily by the temperature of the underlying mantle, which determines the extent and pressure of melting, and, consequently, the thickness of the oceanic crust and the depth of the ridge axis. Basalts erupted at back-arc spreading centers, called back-arc basin basalts, are compositionally similar to MORB, but have some compositional features suggesting incorporation of one or multiple subduction-related components in their source." @default.
- W170858192 created "2016-06-24" @default.
- W170858192 creator A5020651688 @default.
- W170858192 creator A5058530370 @default.
- W170858192 date "2014-01-01" @default.
- W170858192 modified "2023-10-05" @default.
- W170858192 title "Composition of the Oceanic Crust" @default.
- W170858192 cites W1531523923 @default.
- W170858192 cites W1532540439 @default.
- W170858192 cites W1568367795 @default.
- W170858192 cites W1595157144 @default.
- W170858192 cites W1653650875 @default.
- W170858192 cites W1759368051 @default.
- W170858192 cites W1786672761 @default.
- W170858192 cites W1829724433 @default.
- W170858192 cites W1858077111 @default.
- W170858192 cites W1915370380 @default.
- W170858192 cites W1963667722 @default.
- W170858192 cites W1964404169 @default.
- W170858192 cites W1964725979 @default.
- W170858192 cites W1965410050 @default.
- W170858192 cites W1966022977 @default.
- W170858192 cites W1966049707 @default.
- W170858192 cites W1966918338 @default.
- W170858192 cites W1967852550 @default.
- W170858192 cites W1968206413 @default.
- W170858192 cites W1969726119 @default.
- W170858192 cites W1969859799 @default.
- W170858192 cites W1973057777 @default.
- W170858192 cites W1974927624 @default.
- W170858192 cites W1976868752 @default.
- W170858192 cites W1977546326 @default.
- W170858192 cites W1977660954 @default.
- W170858192 cites W1977811562 @default.
- W170858192 cites W1978788058 @default.
- W170858192 cites W1980468724 @default.
- W170858192 cites W1981101269 @default.
- W170858192 cites W1983397141 @default.
- W170858192 cites W1984243798 @default.
- W170858192 cites W1986289151 @default.
- W170858192 cites W1986522418 @default.
- W170858192 cites W1987907556 @default.
- W170858192 cites W1988180147 @default.
- W170858192 cites W1989658399 @default.
- W170858192 cites W1990740187 @default.
- W170858192 cites W1990753486 @default.
- W170858192 cites W1990814837 @default.
- W170858192 cites W1991892272 @default.
- W170858192 cites W1992229429 @default.
- W170858192 cites W1993774943 @default.
- W170858192 cites W1994065255 @default.
- W170858192 cites W1997268075 @default.
- W170858192 cites W1997932126 @default.
- W170858192 cites W1998485237 @default.
- W170858192 cites W1999882202 @default.
- W170858192 cites W2002278475 @default.
- W170858192 cites W2003033703 @default.
- W170858192 cites W2003142147 @default.
- W170858192 cites W2004984283 @default.
- W170858192 cites W2005802496 @default.
- W170858192 cites W2005864914 @default.
- W170858192 cites W2007520725 @default.
- W170858192 cites W2008375596 @default.
- W170858192 cites W2008934623 @default.
- W170858192 cites W2009780119 @default.
- W170858192 cites W2014557550 @default.
- W170858192 cites W2017154790 @default.
- W170858192 cites W2017814892 @default.
- W170858192 cites W2017962985 @default.
- W170858192 cites W2018337696 @default.
- W170858192 cites W2020714549 @default.
- W170858192 cites W2024828229 @default.
- W170858192 cites W2025037750 @default.
- W170858192 cites W2026477496 @default.
- W170858192 cites W2027208596 @default.
- W170858192 cites W2027411021 @default.
- W170858192 cites W2028202848 @default.
- W170858192 cites W2029688186 @default.
- W170858192 cites W2030254360 @default.
- W170858192 cites W2030929256 @default.
- W170858192 cites W2032279682 @default.
- W170858192 cites W2032584964 @default.
- W170858192 cites W2033560527 @default.
- W170858192 cites W2034486742 @default.
- W170858192 cites W2035743760 @default.
- W170858192 cites W2036525293 @default.
- W170858192 cites W2037776884 @default.
- W170858192 cites W2039756606 @default.
- W170858192 cites W2039882617 @default.
- W170858192 cites W2040295661 @default.
- W170858192 cites W2041169676 @default.
- W170858192 cites W2041379122 @default.
- W170858192 cites W2042374407 @default.
- W170858192 cites W2042678113 @default.
- W170858192 cites W2042692134 @default.
- W170858192 cites W2042768776 @default.
- W170858192 cites W2045278226 @default.
- W170858192 cites W2047275354 @default.