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• W3000498093 endingPage "105381" @default.
• W3000498093 startingPage "105381" @default.
• W3000498093 abstract "The Afar Depression is a broad region of subdued topography wherein the Red Sea, Gulf of Aden, and East African Rift System converge at a triple junction. This mature sector of the East African Rift System is characterized by attenuated continental lithosphere, with the implication that lavas erupted here can provide insights into the composition of sub-lithospheric magma reservoirs. Magmas in Afar and Yemen largely have geochemical characteristics consistent with a mixture of melts derived from the Afar plume, and from a hybrid endmember comprised of the depleted upper mantle and Pan-African lithosphere. Lavas erupted in the Erta ‘Ale range do not comport with this model and instead appear to have been derived from melting of a lithospheric mantle metasome that is likely related to prior Afar plume-lithosphere interaction. The extant data show no significant change in the reservoirs contributing to magmatism during the development of the rift in this region, however the surface distribution of magmatism reveals a relationship between rift evolution and magmatism. In Yemen, magmatic activity is limited to the regional Mid Miocene Resurgence event at ca. 10 Ma, and small-volume alkaline volcanism along the evolving Gulf of Aden margin from 6 Ma to present. In contrast, a much more extensive magmatic record is preserved in Afar. Coincident with the development of the rift margin, initial magmatism in Afar during this period (20–10 Ma) was dominantly in the form of large silicic eruptions, with lesser volumes of crustally contaminated Mablas basalts. The development of rift-marginal basins at ca. 7 Ma was coincident with the widespread eruption of fissural basalt of the Dalha Series. The Dalhoid Series represents a pulse of magmatism from ca. 5.6 to 3.9 Ma, which correlates with the initiation of sedimentation within the Sagantole Formation. The initiation of the lower member of the Afar Stratoid Series at ca. 3.9 Ma is broadly contemporaneous with sedimentation within the Hadar Formation, while the upper member (2.6 Ma) correlates with the Busidima Formation. The Gulf Basalt Series (2.8–0.3 Ma) temporally overlaps the upper member of the Afar Stratoid Series, but represents the first manifestations of the coincidence of strain localization and magmatism within rift axial grabens. The subsequent Axial Series (ca. 0.7 Ma to present), manifests as basaltic cones and central silicic volcanoes within three zones aligned with the Main Ethiopian Rift, Red Sea Rift, and Gulf of Aden. The evolution in Afar from initial large-scale silicic volcanic events to basin-wide fissural basaltic flows, to modern zones of focused magmatism, broadly parallels the localization of strain during the same period. This intimate relationship between the mechanism of strain accommodation and surface manifestation of magmatism in Afar has the implication that the modern zones of focused magmatism and strain are the pre-cursors of oceanic spreading centers. While Afar is clearly at an advanced stage in the rifting process, whether these modern zones are the direct precursors to oceanic spreading centers remains unresolved." @default.
• W3000498093 created "2020-01-23" @default.
• W3000498093 creator A5087207712 @default.
• W3000498093 date "2020-05-01" @default.
• W3000498093 modified "2023-10-09" @default.
• W3000498093 title "The Cenozoic magmatism of East Africa: Part IV – The terminal stages of rifting preserved in the Northern East African Rift System" @default.
• W3000498093 cites W1519872695 @default.
• W3000498093 cites W1533189974 @default.
• W3000498093 cites W1570876178 @default.
• W3000498093 cites W1574665252 @default.
• W3000498093 cites W1679441618 @default.
• W3000498093 cites W1779930784 @default.
• W3000498093 cites W1865945414 @default.
• W3000498093 cites W1910643799 @default.
• W3000498093 cites W1940026297 @default.
• W3000498093 cites W1948207159 @default.
• W3000498093 cites W1966116805 @default.
• W3000498093 cites W1967172981 @default.
• W3000498093 cites W1970425528 @default.
• W3000498093 cites W1974259877 @default.
• W3000498093 cites W1976772311 @default.
• W3000498093 cites W1978202478 @default.
• W3000498093 cites W1978529528 @default.
• W3000498093 cites W1979077638 @default.
• W3000498093 cites W1979808953 @default.
• W3000498093 cites W1981004178 @default.
• W3000498093 cites W1982385055 @default.
• W3000498093 cites W1992206577 @default.
• W3000498093 cites W1992272017 @default.
• W3000498093 cites W1992693329 @default.
• W3000498093 cites W1993323083 @default.
• W3000498093 cites W1999743542 @default.
• W3000498093 cites W2000637303 @default.
• W3000498093 cites W2002958841 @default.
• W3000498093 cites W2003227049 @default.
• W3000498093 cites W2003987543 @default.
• W3000498093 cites W2005781643 @default.
• W3000498093 cites W2006211097 @default.
• W3000498093 cites W2006369806 @default.
• W3000498093 cites W2007548647 @default.
• W3000498093 cites W2008800220 @default.
• W3000498093 cites W2012081041 @default.
• W3000498093 cites W2012790889 @default.
• W3000498093 cites W2015940363 @default.
• W3000498093 cites W2017340713 @default.
• W3000498093 cites W2020470148 @default.
• W3000498093 cites W2021611899 @default.
• W3000498093 cites W2023127187 @default.
• W3000498093 cites W2026932112 @default.
• W3000498093 cites W2028164936 @default.
• W3000498093 cites W2028407735 @default.
• W3000498093 cites W2028476403 @default.
• W3000498093 cites W2028598151 @default.
• W3000498093 cites W2031108625 @default.
• W3000498093 cites W2031381920 @default.
• W3000498093 cites W2031489692 @default.
• W3000498093 cites W2032311728 @default.
• W3000498093 cites W2032859587 @default.
• W3000498093 cites W2035168588 @default.
• W3000498093 cites W2037546356 @default.
• W3000498093 cites W2039236357 @default.
• W3000498093 cites W2044096781 @default.
• W3000498093 cites W2048182970 @default.
• W3000498093 cites W2051046669 @default.
• W3000498093 cites W2051064502 @default.
• W3000498093 cites W2053570782 @default.
• W3000498093 cites W2053690184 @default.
• W3000498093 cites W2054986748 @default.
• W3000498093 cites W2058013971 @default.
• W3000498093 cites W2060696521 @default.
• W3000498093 cites W2061481840 @default.
• W3000498093 cites W2064077359 @default.
• W3000498093 cites W2066057897 @default.
• W3000498093 cites W2066273985 @default.
• W3000498093 cites W2066447471 @default.
• W3000498093 cites W2066457414 @default.
• W3000498093 cites W2066655662 @default.
• W3000498093 cites W2066683166 @default.
• W3000498093 cites W2069836684 @default.
• W3000498093 cites W2069875122 @default.
• W3000498093 cites W2070120765 @default.
• W3000498093 cites W2071307485 @default.
• W3000498093 cites W2073601367 @default.
• W3000498093 cites W2074029267 @default.
• W3000498093 cites W2077028606 @default.
• W3000498093 cites W2077308142 @default.
• W3000498093 cites W2078464421 @default.
• W3000498093 cites W2078774116 @default.
• W3000498093 cites W2079074324 @default.
• W3000498093 cites W2080240398 @default.
• W3000498093 cites W2085271975 @default.
• W3000498093 cites W2085527334 @default.
• W3000498093 cites W2087718514 @default.
• W3000498093 cites W2088424892 @default.
• W3000498093 cites W2091049975 @default.
• W3000498093 cites W2091616693 @default.
• W3000498093 cites W2092641211 @default.
• W3000498093 cites W2092694319 @default.

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