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- W2891990432 abstract "Peridotites exhumed along detachment faults at slow- and ultraslow-spreading ridges undergo variable and complex serpentinization. Here, we present in-situ oxygen isotope analyses in serpentine minerals from a textural sequence identified in samples drilled at the Atlantis Massif (Mid-Atlantic ridge, MAR, 30°N) and dredged along the easternmost Southwest Indian ridge (SWIR, 62–65°E). The textural sequence is similar at both locations and involves: mesh texture and bastite formation after olivine and orthopyroxene, mesh texture recrystallization into chrysotile- and antigorite-dominated textures, and banded and fibrous veins. The δ18O in serpentine decreases with the textural sequence, which we interpret to record an increase in the time-integrated water-rock ratio under a nearly constant temperature. While mesh texture development starts at stoichiometric water-rock ratios and creates an isotopic variability at a scale of ~100 μm, recrystallized textures indicate serpentinization temperatures on the order of 260–290 °C (seawater-dominated fluid hypothesis) or 320–360 °C (hydrothermally altered seawater hypothesis). The subsequent banded veins record the evolution towards colder and seawater-dominated fluids potentially present in shallower levels of the detachment footwall. Serpentinization leading to the mesh textures appears faster and more heterogeneous in Atlantis Massif samples than in SWIR samples. We propose that such features are influenced by the amount of gabbros intruded in the peridotite. In addition to influencing fluid pathways, gabbros also provide a source for observed Si-enrichments in some Atlantis Massif samples and control the pH, which in turn influences the mobility of Al." @default.
- W2891990432 created "2018-09-27" @default.
- W2891990432 creator A5042065911 @default.
- W2891990432 creator A5045130370 @default.
- W2891990432 creator A5050706880 @default.
- W2891990432 date "2018-12-01" @default.
- W2891990432 modified "2023-09-26" @default.
- W2891990432 title "In-situ oxygen isotope analyses in serpentine minerals: Constraints on serpentinization during tectonic exhumation at slow- and ultraslow-spreading ridges" @default.
- W2891990432 cites W1489938111 @default.
- W2891990432 cites W1674991382 @default.
- W2891990432 cites W1849376237 @default.
- W2891990432 cites W1964421696 @default.
- W2891990432 cites W1965296664 @default.
- W2891990432 cites W1966101874 @default.
- W2891990432 cites W1969051824 @default.
- W2891990432 cites W1973299642 @default.
- W2891990432 cites W1976868752 @default.
- W2891990432 cites W1979082610 @default.
- W2891990432 cites W1988606291 @default.
- W2891990432 cites W1988943085 @default.
- W2891990432 cites W1988978036 @default.
- W2891990432 cites W1990581568 @default.
- W2891990432 cites W2004245447 @default.
- W2891990432 cites W2005539087 @default.
- W2891990432 cites W2007711398 @default.
- W2891990432 cites W2008934623 @default.
- W2891990432 cites W2009231542 @default.
- W2891990432 cites W2013634682 @default.
- W2891990432 cites W2014892075 @default.
- W2891990432 cites W2015420670 @default.
- W2891990432 cites W2017264474 @default.
- W2891990432 cites W2020810253 @default.
- W2891990432 cites W2031077189 @default.
- W2891990432 cites W2032290499 @default.
- W2891990432 cites W2033804331 @default.
- W2891990432 cites W2034058675 @default.
- W2891990432 cites W2041528419 @default.
- W2891990432 cites W2042200137 @default.
- W2891990432 cites W2042202999 @default.
- W2891990432 cites W2052988056 @default.
- W2891990432 cites W2057655240 @default.
- W2891990432 cites W2067431079 @default.
- W2891990432 cites W2071336893 @default.
- W2891990432 cites W2072685698 @default.
- W2891990432 cites W2076520062 @default.
- W2891990432 cites W2076833330 @default.
- W2891990432 cites W2077376618 @default.
- W2891990432 cites W2083138515 @default.
- W2891990432 cites W2087564946 @default.
- W2891990432 cites W2095108102 @default.
- W2891990432 cites W2104473749 @default.
- W2891990432 cites W2107710538 @default.
- W2891990432 cites W2108148973 @default.
- W2891990432 cites W2114270007 @default.
- W2891990432 cites W2125291350 @default.
- W2891990432 cites W2126671525 @default.
- W2891990432 cites W2135273467 @default.
- W2891990432 cites W2137209139 @default.
- W2891990432 cites W2154014817 @default.
- W2891990432 cites W2154458308 @default.
- W2891990432 cites W2158140282 @default.
- W2891990432 cites W2159932134 @default.
- W2891990432 cites W2160908072 @default.
- W2891990432 cites W2162859581 @default.
- W2891990432 cites W2164220172 @default.
- W2891990432 cites W2166102005 @default.
- W2891990432 cites W2167590372 @default.
- W2891990432 cites W2169072530 @default.
- W2891990432 cites W2258434531 @default.
- W2891990432 cites W2295300293 @default.
- W2891990432 cites W2315469448 @default.
- W2891990432 cites W2316969563 @default.
- W2891990432 cites W2317917382 @default.
- W2891990432 cites W2328830054 @default.
- W2891990432 cites W2333584980 @default.
- W2891990432 cites W2340952558 @default.
- W2891990432 cites W2342704489 @default.
- W2891990432 cites W2553815294 @default.
- W2891990432 cites W2585658701 @default.
- W2891990432 cites W2736150281 @default.
- W2891990432 cites W2744716837 @default.
- W2891990432 cites W2808931462 @default.
- W2891990432 cites W2809393099 @default.
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- W2891990432 doi "https://doi.org/10.1016/j.lithos.2018.09.021" @default.
- W2891990432 hasPublicationYear "2018" @default.
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