FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3204103051> ?p ?o ?g. }

• W3204103051 endingPage "158" @default.
• W3204103051 startingPage "140" @default.
• W3204103051 abstract "The alkalinity of ocean island basalts (OIB), which form by upwelling thermo-chemical instabilities in the mantle, is often associated with the degree of melting. Yet it remains to be tested if alkalinity and the degree of melting are systematically associated with enriched mantle components. The Tasmantid Seamounts, which are fossil remnants of the Tasmantid mantle plume, comprise a north-south age-progressive submarine volcanic chain in the Coral and Tasman Seas East of Australia. Dredged seafloor lavas from nine seamounts along the seamount chain, ranging in age from 50 to 6.5 Ma, show a dichotomy in alkalinity, similar to those observed in other hotspot areas such as Hawai’i or Pitcairn. In radiogenic Sr-Nd-Hf-Pb isotope systematics, Tasmantid Seamount lavas form a continuum between EM1 and PREMA and are thus part of the prevalent EM1-PREMA association in the Pacific. However, their radiogenic Pb isotope systematics mark the Tasmantid plume as an individuum with no resemblance to any other plume. In stable Fe isotopes (expressed as δ 57 Fe Prim , which is the Fe isotopic composition calculated to primitive lavas along a liquid line of descent) alkali basalts are, on average, isotopically heavier than tholeiitic lavas, ranging in δ 57 Fe Prim from +0.10 to +0.21‰, unrelated to radiogenic isotope systematics, but with co-variations of δ 57 Fe Prim and Ti* (which is the primitive melt Ti content). These systematics point towards residual garnet as a key factor and thus indicate a solely petrologic relation between degrees of melting and Fe isotopes. Tholeiitic lavas exhibit a near-depleted mantle like isotopic composition (ranging in δ 57 Fe Prim from −0.01 to +0.22‰, median at δ 57 Fe Prim + 0.04‰), yet with values of up to δ 57 Fe Prim + 0.22‰ that require an isotopically heavy source of unknown origin. The lack of systematics between alkalinity and radiogenic isotope signatures indicates that temperature is the likely driving force for variable melting degrees in some samples over others. Based on these observations, we surmise that tholeiitic lavas form in the plume centre whereas alkaline lavas form at the cooler rim of the conduit. Mixing between melts and associated enriched components in the Tasmantid mantle plume may occur but, at least for alkaline lavas, only on a small scale." @default.
• W3204103051 created "2021-10-11" @default.
• W3204103051 creator A5008313205 @default.
• W3204103051 creator A5009380036 @default.
• W3204103051 creator A5028709465 @default.
• W3204103051 creator A5043804374 @default.
• W3204103051 creator A5073128359 @default.
• W3204103051 date "2021-12-01" @default.
• W3204103051 modified "2023-10-13" @default.
• W3204103051 title "Alkalinity of ocean island lavas decoupled from enriched source components: A case study from the EM1-PREMA Tasmantid mantle plume" @default.
• W3204103051 cites W1498216505 @default.
• W3204103051 cites W1511677864 @default.
• W3204103051 cites W1555074799 @default.
• W3204103051 cites W1562979489 @default.
• W3204103051 cites W1579624063 @default.
• W3204103051 cites W1627328041 @default.
• W3204103051 cites W1675744230 @default.
• W3204103051 cites W1699045143 @default.
• W3204103051 cites W1764818718 @default.
• W3204103051 cites W1828329906 @default.
• W3204103051 cites W1896461978 @default.
• W3204103051 cites W1914890451 @default.
• W3204103051 cites W1963819833 @default.
• W3204103051 cites W1964490562 @default.
• W3204103051 cites W1968430296 @default.
• W3204103051 cites W1968545963 @default.
• W3204103051 cites W1969859799 @default.
• W3204103051 cites W1970947232 @default.
• W3204103051 cites W1974463006 @default.
• W3204103051 cites W1974731988 @default.
• W3204103051 cites W1980002163 @default.
• W3204103051 cites W1983270558 @default.
• W3204103051 cites W1985957692 @default.
• W3204103051 cites W1995194566 @default.
• W3204103051 cites W1995857854 @default.
• W3204103051 cites W2001405671 @default.
• W3204103051 cites W2004856555 @default.
• W3204103051 cites W2006137489 @default.
• W3204103051 cites W2008782416 @default.
• W3204103051 cites W2009544440 @default.
• W3204103051 cites W2009641230 @default.
• W3204103051 cites W2014814915 @default.
• W3204103051 cites W2021987309 @default.
• W3204103051 cites W2022857584 @default.
• W3204103051 cites W2027988322 @default.
• W3204103051 cites W2035178582 @default.
• W3204103051 cites W2037834208 @default.
• W3204103051 cites W2038296817 @default.
• W3204103051 cites W2038719649 @default.
• W3204103051 cites W2039195509 @default.
• W3204103051 cites W2042423268 @default.
• W3204103051 cites W2046406137 @default.
• W3204103051 cites W2047567126 @default.
• W3204103051 cites W2047790922 @default.
• W3204103051 cites W2055768450 @default.
• W3204103051 cites W2060419390 @default.
• W3204103051 cites W2060928101 @default.
• W3204103051 cites W2063912394 @default.
• W3204103051 cites W2073867908 @default.
• W3204103051 cites W2076342957 @default.
• W3204103051 cites W2076522025 @default.
• W3204103051 cites W2076755830 @default.
• W3204103051 cites W2077430827 @default.
• W3204103051 cites W2083691178 @default.
• W3204103051 cites W2085234182 @default.
• W3204103051 cites W2090275812 @default.
• W3204103051 cites W2095508229 @default.
• W3204103051 cites W2096646144 @default.
• W3204103051 cites W2098705248 @default.
• W3204103051 cites W2103507727 @default.
• W3204103051 cites W2103897223 @default.
• W3204103051 cites W2107485853 @default.
• W3204103051 cites W2117683602 @default.
• W3204103051 cites W2118936252 @default.
• W3204103051 cites W2127125460 @default.
• W3204103051 cites W2133399066 @default.
• W3204103051 cites W2136039128 @default.
• W3204103051 cites W2138522501 @default.
• W3204103051 cites W2147037889 @default.
• W3204103051 cites W2148295486 @default.
• W3204103051 cites W2154858814 @default.
• W3204103051 cites W2157099954 @default.
• W3204103051 cites W2161188118 @default.
• W3204103051 cites W2174176343 @default.
• W3204103051 cites W2196046810 @default.
• W3204103051 cites W2323665205 @default.
• W3204103051 cites W2330184473 @default.
• W3204103051 cites W2467510129 @default.
• W3204103051 cites W2510283352 @default.
• W3204103051 cites W2513789484 @default.
• W3204103051 cites W2521500440 @default.
• W3204103051 cites W2530248222 @default.
• W3204103051 cites W2611537658 @default.
• W3204103051 cites W2615106566 @default.
• W3204103051 cites W2716439769 @default.
• W3204103051 cites W2804544321 @default.
• W3204103051 cites W2909569627 @default.
• W3204103051 cites W2950029086 @default.

• next