勉略带是古生代的板块缝合带吗?  

THE GEOLOGIC EVIDENCES OF THE MIAN-LUE TECTONIC BELT BEING NON-PHANEROZOIC PLATE SUTURING BELT

作　　者：杨志华[1] 李勇[1] 邓亚婷 

机构地区：[1]西安工程学院资源系 [2]陕西地矿信息中心

出　　处：《湖北地矿》2001年第2期11-17,共7页Hubei Geology & Mineral Resources

基　　金：国土资源部陕甘川项目;地矿部"八五"秦巴科技攻关 (85- 0 1- 0 18);国家科委 (96- 914-0 1- 0 4);国家自然科学基金 (492 72 136 )等项目资助

摘　　要：通过专题研究、区调填图和多学科综合分析 ,从勉略带内部地层的岩性、时代、结构、古生物化石及生物古地理分区 ;蛇绿岩、超基性岩、变质火山岩的产状和地球化学特征以及它和勉略宁—摩天岭地块、扬子块、西秦岭带、佛坪块的相互关系 ,详细论述了勉略带不是显生宙时期的板块缝合带 ,不存在Pz2By the monographic study, regional mapping and polydivisional synthetical analysis, the authors detailedly introduce the lithology, age, structure, palaeobiology, palaeogeographic division of the trata and the attitude and geochemistry of the ophiolite, ultrabasic rocks and metavolcanite in Mian-Lue tectonic belt, and the relationship between Mian-Lue-Ning-Motianling block, Yangtze block, western Qinling belt, Fopin block is discussed as well. The authors put forwards that the Mian-Lue belt is not the Phanerozoic plate suturing belt, and there doesn't exit Pz 2-T, even finite ocean basin in Mian-Lue tectonic belt.

关 键 词：勉略带 显生宙 蛇绿混杂岩带 板块缝合带 古生代 

分 类 号：P542.4[天文地球—构造地质学] P534.4[天文地球—地质学]