...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Contributions to Mineralogy and Petrology >Comment on: 'High-temperature dehydration melting and decompressive P-T path in a granulite complex from the Eastern Ghats India' by S. Bhattacharya and R. Kar
【24h】

Comment on: 'High-temperature dehydration melting and decompressive P-T path in a granulite complex from the Eastern Ghats India' by S. Bhattacharya and R. Kar

机译：S. Bhattacharya和R. Kar发表评论：“来自印度东高止山脉的粒状复合物中的高温脱水熔融和减压P-T路径”

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Thermodynamic and chemographic modelling of complex reaction textures observed in Mg-Al-rich pelitic granulites is an important tool to unravel the P-T evolutionary history of high-grade rocks. In the Eastern Ghats Belt, India, several studies have been carried out on these fascinating aluminous granulites, and the results of these studies have revealed complex P-T-t histories (Dasgupta and Sengupta 1995; Sengupta et at. 1999; Rickers et at. 2001a, 2001b; Gupta et al. 1999; Dobmeier and Simmat 2002; Dobmeier and Raith 2003). In recent communication, Bhattacharya and Kar (2002) reported reaction textures from a suite of Mg-Al granulites from the Paderu area of the Eastern Ghats Belt. Combining the textural relations and thermodynamic calibration of some construed reactions, the authors have put forward a single phase metamorphic evolution of the area along a 'clockwise' pressure-temperature trajectory. Combining the petrological features from the Paderu area with those reported from the Chilka Lake complex, the authors proposed a general tectonic model for the entire Eastern Ghats Belt. Incidentally, the rocks in and around Paderu have been studied in some detail by several other workers (Lal et al. 1987; Mohan et al. 1997; Sengupta et at. 1997). The purpose of this comment is to demonstrate that the conclusions made in the paper are inconsistent with the petrological features described in the text. Further, the thermodynamic treatment used in the paper has serious errors in many places, and hence, is often in complete disagreement with the existing experimental data and theoretical analyses on the Mg-Al-rich assemblages. There are also significant problems arising from the poor quality of the analytical database. Unfortunately, the authors cite only a few published works (mostly their own) ignoring many other relevant studies from this belt (cited above). Our observations are organised according to the sections of the paper.
机译：在富含Mg-Al的针状粒料中观察到的复杂反应织构的热力学和化学建模，是揭示高级岩石P-T演化历史的重要工具。在印度的东高止山脉带，对这些迷人的铝质花岗岩进行了数项研究，这些研究的结果揭示了复杂的PTt历史（Dasgupta和Sengupta 1995; Sengupta等，1999; Rickers等，2001a，2001b）。 ; Gupta等人1999; Dobmeier和Simmat 2002; Dobmeier和Raith 2003）。在最近的交流中，Bhattacharya和Kar（2002）报告了来自东高止山脉带帕德鲁地区的一系列Mg-Al颗粒的反应质地。结合一些解释性反应的结构关系和热力学校准，作者提出了沿“顺时针”压力-温度轨迹的区域单相变质演化。结合帕德鲁地区的岩石学特征和奇尔卡湖综合体报道的岩石学特征，作者提出了整个东高止山脉带的一般构造模型。顺便提一下，帕德鲁及其周边地区的岩石已经由其他几位工人进行了详细研究（Lal等，1987; Mohan等，1997; Sengupta等，1997）。本评论的目的是证明本文得出的结论与本文所述的岩石学特征不一致。此外，本文中使用的热力学处理在许多地方都有严重的错误，因此，常常与现有的实验数据和富镁铝组合物的理论分析完全不同。分析数据库的质量低下也带来了严重的问题。不幸的是，作者仅引用了几篇已发表的作品（大部分是他们自己的作品），却忽略了这一带上的许多其他相关研究（如上所述）。我们的观察是根据本文的各个部分进行组织的。

著录项

相似文献

  • 外文文献
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