Matches in SemOpenAlex for { <https://semopenalex.org/work/W63284986> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W63284986 abstract "New Sm-Nd whole-rock isotopic data have been obtained on 56 rock units: 52 from the Piedmont, 3 from the Blue Ridge. Results of these units are presented. A plot of crystallization age versus initial [var epsilon][sub Nd] shows two distinct trends: one for Blue Ridge-Sauratown Mountain samples, and one for Piedmont samples. Blue Ridge basement gneisses contain a major depleted source component at 1200-to-1500 Ma, with significant recrystallization at [approximately]1000 Ma. Piedmont units, [approximately]550-to-270 Ma, are derived from a more depleted source, and cannot have formed by melting of Blue Ridge crust. Sm-Nd reference isochrons of [approximately]550 and 1500 Ma can be drawn through the central and eastern Piedmont and BR samples, respectively. These crustal formation dates ( ) match the oldest U-Pb and Sm-Nd ages thus far reported for these areas. Based on Sr and Nd data, there appear to be two different magma types in the central and eastern Piedmont. The most juvenile depleted crust in the CSB and CB ([approximately]550 Ma, [var epsilon][sub Nd] = [approximately]6, I[sub Sr] [approximately]0.703) could be the source of low I[sub Sr] Late Paleozoic plutons. Low [var epsilon][sub Nd], high I[sub Sr] Piedmont plutons could represent mixtures of juvenile plus older (Grenvillemore » ) crust. The IP may have incorporated a significant amount of this older crust, resulting in isotopic signatures that differ somewhat from both the Blue Ridge and the rest of the Piedmont.« less" @default.
- W63284986 created "2016-06-24" @default.
- W63284986 creator A5054392181 @default.
- W63284986 creator A5059716561 @default.
- W63284986 creator A5080654138 @default.
- W63284986 date "1994-03-01" @default.
- W63284986 modified "2023-09-23" @default.
- W63284986 title "Initial Nd and Sr isotopic compositions of the Piedmont and Blue Ridge of the Carolinas" @default.
- W63284986 hasPublicationYear "1994" @default.
- W63284986 type Work @default.
- W63284986 sameAs 63284986 @default.
- W63284986 citedByCount "0" @default.
- W63284986 crossrefType "journal-article" @default.
- W63284986 hasAuthorship W63284986A5054392181 @default.
- W63284986 hasAuthorship W63284986A5059716561 @default.
- W63284986 hasAuthorship W63284986A5080654138 @default.
- W63284986 hasConcept C127313418 @default.
- W63284986 hasConcept C151730666 @default.
- W63284986 hasConcept C171701179 @default.
- W63284986 hasConcept C17409809 @default.
- W63284986 hasConcept C26687426 @default.
- W63284986 hasConcept C2776698055 @default.
- W63284986 hasConcept C32277403 @default.
- W63284986 hasConcept C34122518 @default.
- W63284986 hasConcept C42787717 @default.
- W63284986 hasConcept C46381822 @default.
- W63284986 hasConcept C487381 @default.
- W63284986 hasConcept C77928131 @default.
- W63284986 hasConceptScore W63284986C127313418 @default.
- W63284986 hasConceptScore W63284986C151730666 @default.
- W63284986 hasConceptScore W63284986C171701179 @default.
- W63284986 hasConceptScore W63284986C17409809 @default.
- W63284986 hasConceptScore W63284986C26687426 @default.
- W63284986 hasConceptScore W63284986C2776698055 @default.
- W63284986 hasConceptScore W63284986C32277403 @default.
- W63284986 hasConceptScore W63284986C34122518 @default.
- W63284986 hasConceptScore W63284986C42787717 @default.
- W63284986 hasConceptScore W63284986C46381822 @default.
- W63284986 hasConceptScore W63284986C487381 @default.
- W63284986 hasConceptScore W63284986C77928131 @default.
- W63284986 hasLocation W632849861 @default.
- W63284986 hasOpenAccess W63284986 @default.
- W63284986 hasPrimaryLocation W632849861 @default.
- W63284986 hasRelatedWork W1626294849 @default.
- W63284986 hasRelatedWork W1973800976 @default.
- W63284986 hasRelatedWork W1974812317 @default.
- W63284986 hasRelatedWork W1974890658 @default.
- W63284986 hasRelatedWork W1976800255 @default.
- W63284986 hasRelatedWork W1977793586 @default.
- W63284986 hasRelatedWork W1983142816 @default.
- W63284986 hasRelatedWork W1994694358 @default.
- W63284986 hasRelatedWork W2025066789 @default.
- W63284986 hasRelatedWork W2026385560 @default.
- W63284986 hasRelatedWork W2040788351 @default.
- W63284986 hasRelatedWork W2047176498 @default.
- W63284986 hasRelatedWork W2049902162 @default.
- W63284986 hasRelatedWork W2052016523 @default.
- W63284986 hasRelatedWork W2074881295 @default.
- W63284986 hasRelatedWork W2084028362 @default.
- W63284986 hasRelatedWork W2142319922 @default.
- W63284986 hasRelatedWork W2181435657 @default.
- W63284986 hasRelatedWork W2567103635 @default.
- W63284986 hasRelatedWork W358824128 @default.
- W63284986 isParatext "false" @default.
- W63284986 isRetracted "false" @default.
- W63284986 magId "63284986" @default.
- W63284986 workType "article" @default.