Matches in SemOpenAlex for { <https://semopenalex.org/work/W1971554572> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W1971554572 endingPage "A58" @default.
- W1971554572 startingPage "A58" @default.
- W1971554572 abstract "Two groups of protogranular spinel-lherzolite and harzburgite xenoliths occur in Late Tertiary necks on Sal Island, Cape Verde Archipelago. Large protogranular clinopyroxenes from lherzolites (cpx 8–17 vol%) have high Cr2O3 and low CaO contents, and upward-convex rare earth element (REE) patterns (LaN = 3.6– 5.3; SmN = 8.3–12.8; YbN = 2.4–4.8). Orthopyroxenes show very high Cr2O3 contents and flat HREE distributions, with YbN ranging from 0.7 to 0.9. Small secondary clinopyroxenes in harzburgites (cpx 1–3 vol%) are characterized by strong enrichment of LREE and MREE (LaN = 7.9–64.1; SmN = 36.6–95.4) with positively fractionated HREE patterns (YbN = 4.9–13.1). Orthopyroxenes in harzburgites reflect high degrees of partial melting, with low Al2O3 contents ( 25%) of a spinel-bearing protolith, whereas the lherzolites reflect low-degree partial melting of a garnet-bearing lherzolite that re-equilibrated in the spinel stability field. Both lithotypes have been metasomatised by kimberlite-like melts, leaving veins of K-rich glass + K-feldspar. In situ Re–Os analyses of intergranular sulfides from lherzolites yield values of 187Os/188Os varying from 0.1037 + 0.0020 to 0.1256 + 0.0022. TRD model ages define three groups: 3320 + 150 Ma, 2060 + 140 Ma and 996 + 73 Ma (1 s). The age patterns in the Re–Os data, the juxtaposition of strongly depleted harzburgites and (originally) garnet lherzolites, and evidence of kimberlite-like metasomatism suggest that part of the ancient African subcontinental lithospheric mantle was incorporated into the newly formed oceanic lithosphere during the opening of the Atlantic ocean." @default.
- W1971554572 created "2016-06-24" @default.
- W1971554572 creator A5020121719 @default.
- W1971554572 creator A5022631664 @default.
- W1971554572 creator A5035029050 @default.
- W1971554572 creator A5047793322 @default.
- W1971554572 creator A5056410545 @default.
- W1971554572 creator A5083277443 @default.
- W1971554572 date "2006-08-01" @default.
- W1971554572 modified "2023-10-01" @default.
- W1971554572 title "Archean to Proterozoic depletion in Cape Verde lithospheric mantle" @default.
- W1971554572 doi "https://doi.org/10.1016/j.gca.2006.06.221" @default.
- W1971554572 hasPublicationYear "2006" @default.
- W1971554572 type Work @default.
- W1971554572 sameAs 1971554572 @default.
- W1971554572 citedByCount "6" @default.
- W1971554572 countsByYear W19715545722012 @default.
- W1971554572 crossrefType "journal-article" @default.
- W1971554572 hasAuthorship W1971554572A5020121719 @default.
- W1971554572 hasAuthorship W1971554572A5022631664 @default.
- W1971554572 hasAuthorship W1971554572A5035029050 @default.
- W1971554572 hasAuthorship W1971554572A5047793322 @default.
- W1971554572 hasAuthorship W1971554572A5056410545 @default.
- W1971554572 hasAuthorship W1971554572A5083277443 @default.
- W1971554572 hasConcept C127313418 @default.
- W1971554572 hasConcept C149347711 @default.
- W1971554572 hasConcept C151730666 @default.
- W1971554572 hasConcept C16942324 @default.
- W1971554572 hasConcept C17409809 @default.
- W1971554572 hasConcept C1965285 @default.
- W1971554572 hasConcept C2549261 @default.
- W1971554572 hasConcept C2910841116 @default.
- W1971554572 hasConcept C5900021 @default.
- W1971554572 hasConcept C67236022 @default.
- W1971554572 hasConcept C77928131 @default.
- W1971554572 hasConcept C93033518 @default.
- W1971554572 hasConcept C95457728 @default.
- W1971554572 hasConceptScore W1971554572C127313418 @default.
- W1971554572 hasConceptScore W1971554572C149347711 @default.
- W1971554572 hasConceptScore W1971554572C151730666 @default.
- W1971554572 hasConceptScore W1971554572C16942324 @default.
- W1971554572 hasConceptScore W1971554572C17409809 @default.
- W1971554572 hasConceptScore W1971554572C1965285 @default.
- W1971554572 hasConceptScore W1971554572C2549261 @default.
- W1971554572 hasConceptScore W1971554572C2910841116 @default.
- W1971554572 hasConceptScore W1971554572C5900021 @default.
- W1971554572 hasConceptScore W1971554572C67236022 @default.
- W1971554572 hasConceptScore W1971554572C77928131 @default.
- W1971554572 hasConceptScore W1971554572C93033518 @default.
- W1971554572 hasConceptScore W1971554572C95457728 @default.
- W1971554572 hasIssue "18" @default.
- W1971554572 hasLocation W19715545721 @default.
- W1971554572 hasOpenAccess W1971554572 @default.
- W1971554572 hasPrimaryLocation W19715545721 @default.
- W1971554572 hasRelatedWork W1967900791 @default.
- W1971554572 hasRelatedWork W1970007678 @default.
- W1971554572 hasRelatedWork W1974622275 @default.
- W1971554572 hasRelatedWork W1976393269 @default.
- W1971554572 hasRelatedWork W1999291288 @default.
- W1971554572 hasRelatedWork W2039711575 @default.
- W1971554572 hasRelatedWork W2074589356 @default.
- W1971554572 hasRelatedWork W2105476294 @default.
- W1971554572 hasRelatedWork W2128601413 @default.
- W1971554572 hasRelatedWork W2300042093 @default.
- W1971554572 hasVolume "70" @default.
- W1971554572 isParatext "false" @default.
- W1971554572 isRetracted "false" @default.
- W1971554572 magId "1971554572" @default.
- W1971554572 workType "article" @default.