豫西罗圈组杂砾岩沉积特征及成因分析  

THE SEDIMENTARY CHARACTERISTICS AND GENESIS ANYLSIS FOR COMPLEX CONGLOMERATE OF LUOQUAN FORMATION IN WESTERN HENAN

作　　者：杨玉卿[1] 吴瑞棠[1] 

机构地区：[1]河南石油勘探局职工大学,中国地质大学

出　　处：《河南地质》1994年第2期119-126,共8页Henan Geology

摘　　要：本文主要依据野外实际资料，参考近年来国内外有关杂砾岩的文献，重点研究了罗圈组杂砾岩的砾石、基质成分、粒度频率分布等沉积特征，讨论了杂砾岩及伴生的其他岩石类型的形成机制。认为杂砾岩的形成与冰川作用紧密相关，与泥石流或重力流沉积作用可能无关。冰川直接堆积的产物以块状杂砾岩等为代表，在剖面占极高比例，相当于原生冰碛岩；冰水改造过的产物在剖面所占比例不高，以层状杂砾岩等为代表，相当于次生冰碛岩。Based on the field actual material,refering to documents that contected with complexconglomerate in recent years in the world,the sedimentary characteristics of gravel,matrixcomposition,distribution of grainsize and frequency of complex conglomerate in LuoquanFormation have been studied and forming mechanism of complex conglomerate and othercompany rocks have been discussed also. The authors believed that the formation of complexconglomerate is inseparable interrlated with glaciation, and has nothing to do with debrisflow or the sedimentary of gravity flow. The product of glacial deposite directely is mainlycomposed of massive complex conglomerate,which occupying high proportion in section,it isequal to primary tillite.

关 键 词：豫西 罗圈组 杂砾岩 成因 沉积 

分 类 号：P588.212.5[天文地球—岩石学]