...
首页> 外文期刊>Contributions to Mineralogy and Petrology >partial melting of lower crust at 10-15 kbar: constraints on adakite and TTG formation
【24h】

partial melting of lower crust at 10-15 kbar: constraints on adakite and TTG formation

机译:下地壳在10-15 kbar时发生部分融化:对白云石和TTG形成的限制

获取原文
获取原文并翻译 | 示例
           

摘要

The pressure-temperature (P-T) conditions for producing adakite/tonalite-trondhjemite-granodiorite (TTG) magmas from lower crust compositions are still open to debate. We have carried out partial melting experiments of mafic lower crust in the piston-cylinder apparatus at 10-15 kbar and 800-1,050 °C to investigate the major and trace elements of melts and residual minerals and further constrain the P-T range appropriate for adakite/TTG formation. The experimental residues include the following: amphibolite (plagioclase + amphibole ± garnet) at 10-15 kbar and 800 °C, garnet granulite (plagioclase 4- amphibole + garnet + clinopyrox-ene + orthopyroxene) at 12.5 kbar and 900 °C, two-pyroxene granulite (plagioclase + clinopyroxene 4- orthopyroxene ± amphibole) at 10 kbar and 900 °C and 10-12.5 kbar and 1,000 °C, garnet pyroxenite (garnet + clinopyroxene ± amphibole) at 13.5-15 kbar and 900-1,000 °C, and pyroxenite (clinopyroxene + orthopyroxene) at 15 kbar and 1,050 °C.
机译:由下部地壳成分生产Adakite / tonalite-长晶岩-granodiorite(TTG)岩浆的压力-温度(P-T)条件仍存在争议。我们在10-15 kbar和800-1,050°C的活塞缸设备中进行了铁镁质下壳的部分熔化实验,以研究熔体和残余矿物的主要和微量元素,并进一步限制了适合于akakite / TTG形成。实验的残留物包括:10-15 kbar和800°C的闪石(斜长石+斜角石+石榴石),12.5 kbar和900°C的石榴石颗粒(斜长石4-闪石+石榴石+ clinopyrox-ene +邻苯二酚),两个于10 kbar和900°C以及10-12.5 kbar和1,000°C的-辉石颗粒(斜长石+斜向辉石4-邻苯二酚±闪石),13.5-15 kbar和900-1,000°C的石榴石辉石(石榴石+斜辉石±闪石) ,以及在15 kbar和1,050°C下的辉石(斜辉石+邻苯二茂铁)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号