FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1999291288> ?p ?o ?g. }

• W1999291288 endingPage "15374" @default.
• W1999291288 startingPage "15359" @default.
• W1999291288 abstract "Several recent models of crustal evolution are based on the belief that the thickness of the continental crust is proportional to its age, with ancient crust being the thickest. A worldwide review of seismic structure contradicts this belief and falsifies these models, at least for the Archean. Proterozoic crust has a thickness of 40–55 km and a substantial high‐velocity (>7 km/s) layer at its base, while Archean crust is only 27–40 km thick (except at the site of younger rifts and collisional boundaries) and lacks the basal high‐velocity layer. Seismology also provides evidence that the lithosphere is thickest beneath Archean cratons, while diamond ages show that this lithospheric keel must have already existed in the Archean. Geochemical data also indicate significant differences between Archean and Proterozoic lithosphere. Major and trace element studies of sediments show a change in upper crustal composition between the Archean and Proterozoic. Archean rocks are depleted in Si and K and enriched in Na, Ca, and Mg. There is also a marked change in the Eu/Eu * ratio. Mantle xenoliths and continental flood basalts show that the mantle lithosphere beneath Archean crust is ultradepleted in FeO compared to that beneath post‐Archean crust. The secular change in the crust‐forming process is attributed to a decline in mantle temperature, leading to a change in the composition of the lithospheric mantle. The higher temperature of the Archean mantle led to the eruption of komatiitic lavas, producing a refractory lithospheric mantle which is ultradepleted in FeO and volatiles. The resultant lithospheric keel is intrinsically less dense than the surrounding mantle and thus not susceptible to delamination. It was sufficiently thick and cool for diamonds to form during the Archean. In contrast, Proterozoic crust developed above fertile mantle. The eruption of continental flood basalts and underplating of basaltic sills is attributed to subsequent heating and partial melting of the lithospheric mantle. Consequently, Proterozoic crust is thickened and has a high‐velocity basal layer." @default.
• W1999291288 created "2016-06-24" @default.
• W1999291288 creator A5000420749 @default.
• W1999291288 creator A5041419986 @default.
• W1999291288 date "1994-08-10" @default.
• W1999291288 modified "2023-10-18" @default.
• W1999291288 title "Evolution of the Precambrian lithosphere: Seismological and geochemical constraints" @default.
• W1999291288 cites W148376100 @default.
• W1999291288 cites W1493074749 @default.
• W1999291288 cites W1517720790 @default.
• W1999291288 cites W1556001614 @default.
• W1999291288 cites W1579181793 @default.
• W1999291288 cites W1590052314 @default.
• W1999291288 cites W160526013 @default.
• W1999291288 cites W1964175282 @default.
• W1999291288 cites W1967714164 @default.
• W1999291288 cites W1969602122 @default.
• W1999291288 cites W1969846781 @default.
• W1999291288 cites W1970149759 @default.
• W1999291288 cites W1970933153 @default.
• W1999291288 cites W1971763202 @default.
• W1999291288 cites W1973078128 @default.
• W1999291288 cites W1974751453 @default.
• W1999291288 cites W1984052571 @default.
• W1999291288 cites W1986737423 @default.
• W1999291288 cites W1988024307 @default.
• W1999291288 cites W1988914543 @default.
• W1999291288 cites W1989055240 @default.
• W1999291288 cites W1991263091 @default.
• W1999291288 cites W1993702982 @default.
• W1999291288 cites W1996021606 @default.
• W1999291288 cites W1996464890 @default.
• W1999291288 cites W2000505371 @default.
• W1999291288 cites W2006725969 @default.
• W1999291288 cites W2007989026 @default.
• W1999291288 cites W2010240370 @default.
• W1999291288 cites W2014828526 @default.
• W1999291288 cites W2018411847 @default.
• W1999291288 cites W2022110504 @default.
• W1999291288 cites W2022900466 @default.
• W1999291288 cites W2023725435 @default.
• W1999291288 cites W2023989699 @default.
• W1999291288 cites W2030933415 @default.
• W1999291288 cites W2032840455 @default.
• W1999291288 cites W2034215463 @default.
• W1999291288 cites W2035056140 @default.
• W1999291288 cites W2036898235 @default.
• W1999291288 cites W2040234272 @default.
• W1999291288 cites W2040340001 @default.
• W1999291288 cites W2044953309 @default.
• W1999291288 cites W2048273015 @default.
• W1999291288 cites W2048645353 @default.
• W1999291288 cites W2050742809 @default.
• W1999291288 cites W2053342234 @default.
• W1999291288 cites W2053654763 @default.
• W1999291288 cites W2054486238 @default.
• W1999291288 cites W2055178299 @default.
• W1999291288 cites W2055911874 @default.
• W1999291288 cites W2060627246 @default.
• W1999291288 cites W2063945760 @default.
• W1999291288 cites W2065009202 @default.
• W1999291288 cites W2067550860 @default.
• W1999291288 cites W2068398280 @default.
• W1999291288 cites W2069020560 @default.
• W1999291288 cites W2070682421 @default.
• W1999291288 cites W2073193552 @default.
• W1999291288 cites W2073890181 @default.
• W1999291288 cites W2074991281 @default.
• W1999291288 cites W2079364444 @default.
• W1999291288 cites W2082065886 @default.
• W1999291288 cites W2083246526 @default.
• W1999291288 cites W2088518170 @default.
• W1999291288 cites W2090194751 @default.
• W1999291288 cites W2091302390 @default.
• W1999291288 cites W2097381052 @default.
• W1999291288 cites W2100210332 @default.
• W1999291288 cites W2101770063 @default.
• W1999291288 cites W2105384183 @default.
• W1999291288 cites W2106667984 @default.
• W1999291288 cites W2110566146 @default.
• W1999291288 cites W2110610247 @default.
• W1999291288 cites W2115168330 @default.
• W1999291288 cites W2117834512 @default.
• W1999291288 cites W2137829824 @default.
• W1999291288 cites W2142724877 @default.
• W1999291288 cites W2150851598 @default.
• W1999291288 cites W2152210657 @default.
• W1999291288 cites W2167380722 @default.
• W1999291288 cites W2168495165 @default.
• W1999291288 cites W2171805491 @default.
• W1999291288 cites W2265675129 @default.
• W1999291288 cites W2328315297 @default.
• W1999291288 cites W2338912987 @default.
• W1999291288 cites W2341046848 @default.
• W1999291288 cites W2482126952 @default.
• W1999291288 cites W2507102334 @default.
• W1999291288 cites W2575191430 @default.
• W1999291288 cites W2975847447 @default.

• next