巴里坤红井子地区中石炭统阿什喀腊组浊积岩的发现及其意义

DISCOVERY OF TURBIDITE IN AXIKANA FORMATION OF MIDDLE CARBONIFEROUS AND ITS SIGNIFICANCE IN THE HOHGJINGZI AREA OF BARKOL

阿什喀腊组浊积岩野外识别标志明显，如层面构造的底部冲刷面、工具模和层内构造的粒序层理、包卷层理、同生叠瓦状泥砾构造、水平层理、沙纹交错层理等鉴别特征清楚；生物丰富，尤其深海一半深海遗迹化石组合十分明显；浊积岩的剖面结构类型虽然复杂多样，但总体分析，以远源浊积岩为主。鲍马序列清晰，一般为小型。该浊积岩的发现对红井子地区和博格达地区的大地构造分析具有重要意义。

The turbidite of Axikara Fm. is discovered in the field by bottom scouring,mold grainary bedding,fold bedding,syngenetic imbricated boulder clay structure,horizontal bedding and cross bedding etc.,with abudant fossils,especiaily the abyssal-semi-abyssal trace fossils.The turbidite is mainly of far source,with obvious Bouma series,generally in a small scale.The discovery has an important significance in the geotectonic analysis in Hongjingzi area and Bogda area.