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references:mullen1983 [2016/03/04 13:47] admin |
references:mullen1983 [2018/11/12 15:08] |
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| - | ====== Geobarometry for Peridotites: Experiments in Simple and Natural Systems from 6 to 10 GPa ====== | ||
| - | <fullref:mullen1983> | ||
| - | <filelink:http://www.sciencedirect.com/science/article/pii/0012821X83900705|mullen1983.pdf> | ||
| - | |||
| - | <code> | ||
| - | @article{Mullen198353, | ||
| - | title = "MnO/TiO2/P2O5: a minor element discriminant for basaltic rocks of oceanic environments and its implications for petrogenesis ", | ||
| - | journal = "Earth and Planetary Science Letters ", | ||
| - | volume = "62", | ||
| - | number = "1", | ||
| - | pages = "53 - 62", | ||
| - | year = "1983", | ||
| - | note = "", | ||
| - | issn = "0012-821X", | ||
| - | doi = "http://dx.doi.org/10.1016/0012-821X(83)90070-5", | ||
| - | url = "http://www.sciencedirect.com/science/article/pii/0012821X83900705", | ||
| - | author = "Ellen D. Mullen", | ||
| - | abstract = "A ternary diagram using MnO, TiO2, \{P2O5\} can discriminate between five petrotectonic environments of basaltic rocks (45–54% SiO2). Fields for mid-ocean ridge, island arc tholeiite, island arc calc-alkaline, ocean island tholeiite, and ocean island alkalic rocks were distinguished on the basis of 507 analyses from well-defined environments. Boninites plot within island arc fields. Continental tholeiites, such as the Columbia River basalts, are high in \{P2O5\} relative to MnO and TiO2, and overlap portions of all five oceanic fields. MnO is depleted relative to TiO2 in mid-ocean ridge analyses and may be controlled by early fractionation of olivine and/or clinopyroxene under conditions of lowfO2. In island arc rocks, MnO is enriched relative to TiO2 due to early crystallization of titanomagnetite in a high-fO2 environment. Primitive mid-ocean ridge and arc tholeiites have similar MnO/TiO2/P2O5 ratios which indicate a grossly similar parent magma. Increasingly differentiated basaltic rocks are more easily classified by the diagram. High relative abundances of TiO2 and \{P2O5\} in ocean island rocks are consistent with their derivation from a separate source. Despite the purported high mobility of MnO, the MnO/TiO2/P2O5 discriminant diagram may be applied to unspilitized and moderately spilitized zeolite to greenschist facies greenstones with good agreement between the environment determined by MnO/TiO2/P2O5 and by other means such as trace elements, REE, or field relations. " | ||
| - | } | ||
| - | </code> | ||