2014
DOI: 10.1007/s00410-014-1005-7
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Variations in melting dynamics and mantle compositions along the Eastern Volcanic Zone of the Gakkel Ridge: insights from olivine-hosted melt inclusions

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Cited by 58 publications
(79 citation statements)
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References 75 publications
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“…A wide range of compositions are observed in lavas erupted on the ultraslow‐spreading Southwest Indian Ridge, suggesting inefficient melt homogenization [ Standish et al ., ] similar to slow‐spreading systems. By contrast, recent studies found remarkably homogeneous trace element ratios in melt inclusions from several individual magmatic centers on the ultraslow‐spreading Gakkel Ridge [ Shaw et al ., ; Wanless et al ., ], suggesting melt homogenization has occurred. Combining trace element data with depth constraints from vapor saturation pressures derived from H 2 O–CO 2 systematics [ Dixon et al ., ], these melt inclusion studies concluded that at many large volcanic centers, melt pooling and homogenization must have occurred in the mantle prior to the melts ascending through the oceanic crust.…”
Section: Introductionsupporting
confidence: 90%
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“…A wide range of compositions are observed in lavas erupted on the ultraslow‐spreading Southwest Indian Ridge, suggesting inefficient melt homogenization [ Standish et al ., ] similar to slow‐spreading systems. By contrast, recent studies found remarkably homogeneous trace element ratios in melt inclusions from several individual magmatic centers on the ultraslow‐spreading Gakkel Ridge [ Shaw et al ., ; Wanless et al ., ], suggesting melt homogenization has occurred. Combining trace element data with depth constraints from vapor saturation pressures derived from H 2 O–CO 2 systematics [ Dixon et al ., ], these melt inclusion studies concluded that at many large volcanic centers, melt pooling and homogenization must have occurred in the mantle prior to the melts ascending through the oceanic crust.…”
Section: Introductionsupporting
confidence: 90%
“…Thus, the melt inclusions sample a wider range of melt compositions than the erupted lavas. Trace element ratios have greater variability than melt inclusions from other MORs [ Wanless and Shaw , ; Wanless et al ., ], with Ba/La = 4–30; La/Sm = 1.0–6.3; La/Yb = 0.9–6.3; and Nb/Zr = 0.04–0.42, and are more similar to the global variability in basaltic glass data (Figures and ).…”
Section: Geochemical Resultsmentioning
confidence: 99%
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“…Chlorine concentrations range from 58.7 to 1399 ppm and are generally higher than typical for basalts from other ultraslow-and slow-spreading ridges (where values b600 ppm for E-MORB samples, but b200 ppm for N-MORB samples have been reported (Michael and Schilling, 1989;Shaw et al, 2010;Wanless et al, 2014)). Cl and MgO are not correlated and their variation does not follow fractionation trends (Fig.…”
Section: Geochemistrymentioning
confidence: 94%
“…Michael and Cornell (1998) for the East Pacific Rise and for slow-spreading ridges with a thick and normal crust. Ultraslow-spreading ridges are represented by data from Michael and Cornell (1998), Shaw et al (2010) and Wanless et al (2014). OIB samples are represented by yellow symbols.…”
Section: Syn-eruptive Seawater Contaminationmentioning
confidence: 99%