Comment on “Discovery of davemaoite, CaSiO 3 -perovskite, as a mineral from the lower mantle”
Comment on “Discovery of davemaoite, CaSiO 3 -perovskite, as a mineral from the lower mantle”
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对“发现来自下地幔的矿物 davemaoite、CaSiO 3 -钙钛矿”的评论
DOI：
10.1126/science.abo0882
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发表时间：
2022
期刊：
影响因子：
56.9
通讯作者：
Yang, Jing
中科院分区：
文献类型：
--
作者：
Walter, Michael J.;Kohn, Simon C.;Pearson, D. Graham;Shirey, Steven B.;Speich, Laura;Stachel, Thomas;Thomson, Andrew R.;Yang, Jing
Walteret等人对我们关于发现davemaoite的报告发表了一些批评性的评论，他们认为这表明我们的结果并没有提供令人信服的证据来证明davemaoite在模式标本中的存在，并且宿主钻石已经在岩石圈中形成。他们的说法是基于对论文中衍射数据的误解，对成分数据的分析不足，忽视了包裹体的三维分布，以及任意假设地球地幔没有温度的横向变化，这与最先进的地幔温度变化评估不一致，也与他们自己发表的结果不一致。
Walteret al. issue a number of critical comments on our report about the discovery of davemaoite to the end that they believe to show that our results do not provide compelling evidence for the presence of davemaoite in the type specimen and that the hosting diamond had formed in the lithosphere. Their claim is based on a misinterpretation of the diffraction data contained in the paper, an insufficient analysis of the compositional data that disregards the three-dimensional distribution of inclusions, and the arbitrary assumption that Earth’s mantle shows no lateral variations in temperature, inconsistent with state-of-the-art assessments of mantle temperature variations and with their own published results.