中国东南部碎斑熔岩问题再探讨  

Re-discussing on porphyroclastic lava in southeast China

作　　者：周万蓬[1,2,3] 郭福生[2,3] 刘林清[2,3] 姜勇彪[2] 

机构地区：[1]核工业北京地质研究院,北京100029 [2]东华理工大学,抚州344000 [3]江西省数字国土重点实验室,抚州344000

出　　处：《资源调查与环境》2015年第2期98-103,共6页Resources Survey & Environment

基　　金：中国地质调查局地质调查项目(项目编号:1212011120836)资助

摘　　要：归纳并总结了前人对碎斑熔岩的产出位置、产状特征、分带性、岩石结构、岩石类型归属、成岩温度及长石矿物特点等方面的研究成果及其认识,对碎斑熔岩的构造属性、碎斑熔岩与火山碎屑沉积岩、花岗斑岩存在的演化关系及碎斑结构成因问题进行了探讨,并指出了原来的碎斑熔岩在空间上应为火山口附近至火山颈相或火山通道相区间的过渡性岩石类型,而不是某一种岩性,应根据岩石特征和野外产状分别归为熔岩或花岗斑岩的岩石名称,这种过渡岩石类型作为整体可考虑定名为碎斑熔岩体。It is summarized the previous research results and understandings of the occurring locations, occurrence features, zonation, rock structure, rock type owership, diagenetic temperature and feldspar mineral characteristics of the prophyroclastic lava in southeast China. By discussing on the problems related to structure attribute, evolution relationships of porphyroclastic lava, pyroclastic sedimentary rock and granite-porphyry, and genesis of porphyroclastic lava,it is concluded that the original porphyroclastic lava in space should belong to transitional rock that occurred nearby the crater to volcanic channel or volcanic neck phase rather than a single lithology, so they should be classified as lava or granite porphyry according to the rock characteristics and field occurrence, and the transitional rock type should be named as porphyroclastic lava.

关 键 词：碎斑熔岩 中国东南部 碎斑结构 

分 类 号：P581[天文地球—岩石学]