Distribution of p-process ¹⁷⁴Hf in early solar system materials and the origin of nucleosynthetic Hf and W isotope anomalies in Ca-Al rich inclusions

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• 作者：Stefan T.M. Peters^a ; ^b ; ^c ; ^{s.peters@geo.uni-goettingen.de} ; Carsten Mü ; nker^a ; ^b ; Markus Pfeifer^a ; ^b ; Bo-Magnus Elfers^a ; ^b ; Peter Sprung^a ; ^b
• 关键词：meteorites ; supernova injection ; CAI ; nucleosynthetic isotope anomalies ; hafnium ; tungsten
• 刊名：Earth and Planetary Science Letters
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：459
• 期：Complete
• 页码：70-79
• 全文大小：827 K
• 卷排序：459

文摘

Chondrites, eucrites and Earth carry uniform p-process 174Hf abundances. Ca–Al rich inclusions have variable p-, and r- (or s-) process Hf proportions. Combined Hf and W isotopes in CAIs reflect selective processing of presolar carriers. No need for interaction between supernova ejecta and the nascent solar system. 176Lu–176Hf and 182Hf–182W chronometers are unaffected by heterogeneity in Hf isotopes.