国外火山地质地貌论文摘要写什么

兄弟 一看你就是没有什么地质学知识 火山喷发一般是在地质板块活跃地带以及板块构造缝隙边缘 貌似你也没有看过中国地质杂志 怎么能说中国没有什么火山呢？再来说说熔岩吧 那个不是熔岩融化上层岩石形成的而是地质板块互相挤压作用较软的板块沉降入地幔融化后才是熔岩形成的来源

Zhejiang province is located in the middle of the west circum-Pacific volcanic belt, which is the main structural and magmatic activity belt during Mesozoic and Cenozoic time in the eastern part of our country, and also the important component of the Pacific tectono-magmatic metallogenic The giant Jiangshan - Shaoxing joint belt divide province into two major geological structures- east Zhejiang unit and west Zhejiang unit which belongs to the southeast edges of the Yangzi P East Zhejiang belongs to South China fold system which features vast development of draped Mesozoic volcanic and red sedimentary Widely invaded igneous rock and Proterozoic metamorphosed strata exposing like fault block uplift presents "one old, one new" geologic structure

摘要写的一般是正文的总结性语言，通常按照目的、方法、过程、结论几个环节来写。字数并不固定，一般二三百字就可以，硕士论文的字数需要更多些，四五百字。