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关于“含水中基性大陆下地壳部分熔融能形成C型埃达克岩吗?”的回复 被引量:1

Reply to “ Can Partial Melting of the Hydrous Intermediate-Basic Lower Continental Crust Generate C-type Adakites? ”
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摘要 焦永玲等对笔者发表在《高校地质学报》2012年第18卷第1期的“含水大陆下地壳的部分熔融:大别山C型埃达克岩成因探讨”一文提出质疑。针对他们的问题,笔者进行了回复,并提出:(1)大别山C型埃达克岩的源岩可能是基性的(SiO2含量50%左右),但是比较准确的成分估计还需要进一步研究(2)变质含水基性岩(角闪岩)在1.0~1.2GPa压力下(相当于35~40km)可以形成含石榴石20%以上的残余体;(3)中钾的角闪岩(K2O含量1%左右)部分熔融可以形成高钾钙碱性长英质熔体(K2O含量3.5%~5%)。 We reply here to the comments of Jiao et al. on our previous paper "Partial Melting of Hydrous Lower Continental Crust: Discussion on the Petrogenesis of C-Type Adakites From the Dabie Orogen. We propose that (1) the protoliths of the C-type adakites from the Dabie orogen might have a basic composition with SiO: content of ca. 50%, but more accurate estimation is to be investigated, (2) partial melting of amphibolite at 1.0-1.2 GPa ( corresponding to a depth of 35-40 kin) can result in residues containing ≥20% garnet, and (3) medium-potassium amphibolitic protolith (ca. 1% K20) can generate high-K calc-alkaline felsic melts with K20 content of 3.5%-5%.
出处 《高校地质学报》 CAS CSCD 北大核心 2013年第2期381-384,共4页 Geological Journal of China Universities
基金 教育部和国家外国专家局高等学校学科创新引智计划(B07039) 国家重点基础研究发展计划项目(2012CB416802)联合资助
关键词 C型埃达克岩 大陆下地壳 角闪岩 部分熔融 大别山 C-type adakite continental lower crust amphibolite partial melting Dabie orogen
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  • 2焦永玲,汪洋,姚瑶,仝立华.含水中基性大陆下地壳部分熔融能形成C型埃达克岩吗?——与张超等商榷[J].高校地质学报,2013,19(2):373-380. 被引量:2
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