Interaction between the Mid-Atlantic Ridge and the Azores hot spot during the last 85 Myr: Emplacement and rifting of the hot spot-derived plateaus
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Cites background from "Interaction between the Mid-Atlanti..."
...The latter is considered to be anultra-slow spreading riftwith an extension rate of 2–4mm/year (Madeira and Ribeiro, 1990; Gente et al., 2003; Vogt and Jung, 2004)....
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24 citations
Cites background from "Interaction between the Mid-Atlanti..."
...According tomagnetic data, theMARwas located in the area of São Miguel during that time (Gente et al., 2003; Luis and Miranda, 2008) casting the dating into doubt.)...
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...Both, the jumpof the triple junction and the strong volcanismare associated with the existence of a hot spot (e.g. Cannat et al., 1999; Gente et al., 2003; Schilling, 1975) or an anomalously volatile-enriched upper mantle (e.g. Bonatti, 1990; Schilling et al., 1980)which once interacted or is still…...
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...After the hot-spot had passed the ridge, the constructed plateau was rifted and normal seafloor spreading has reestablished (Cannat et al., 1999; Escartín et al., 2001; Gente et al., 2003)....
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...Until 7 Ma, the formation of the Terceira Rift involved the accretion of large volumes of extrusives and intrusives aswell as underplated material (Cannat et al., 1999; Gente et al., 2003; Luis et al., 1998)....
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...Therefore, mantle convection may account for the initiation of the Terceira Rift (e.g. Gente et al., 2003; Yang et al., 2006), but it contradicts Adam et al. (2013) who argue stress induced by mantle upwelling being the prevalent factor for the tectonic regime....
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23 citations
References
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Additional excerpts
...0) [Wessel and Smith, 1991]....
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"Interaction between the Mid-Atlanti..." refers background or methods in this paper
...where t is the age in Myr and S is the subsidence in kilometers [Parsons and Sclater, 1977]....
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...The expected subsidence of the seafloor is calculated using the relation S ¼ 0:35 sqrt tð Þ where t is the age in Myr and S is the subsidence in kilometers [Parsons and Sclater, 1977]....
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