Agricultural Changes in Xinjiang in the Sixth Year of Guangxu s Reign from the Perspective of the Monument for Building Qarqi Canal

The Monument for Building Qarqi Canal was inscribed in the sixth year of Guangxu s reign in the Qing Dynasty(1880).This inscription made a detailed record of the event when the Qing army expelled the invading army of Mohammad Yaqub Beg,whenever the Qing army regained a place,it immediately started recruiting exiled people,restoring agriculture,building water conservancy and did other rehabilitation works.The army of the Qing Dynasty successively established rehabilitation bureaus in various parts of southern Xinjiang to be responsible for the rehabilitation works.These once again set off a climax in the development of water conservancy in multi-ethnic areas in Xinjiang,and laid the foundation for the rapid development of agricultural development and water conservancy in Xinjiang during the Guangxu s reign in the Qing Dynasty.

新疆拜城县察尔其铜矿床的沉积环境及成矿作用分析

察尔其铜矿位于新疆拜城县,是区域滴水铜矿带的东段。铜矿体产于新生界中新统-上新统康村组第四段(N 1-2 k 4)的第3亚段和第5亚段;铜矿化主要产于杂色砂岩及其与泥灰岩接触部位附近。矿区含矿层主要有B矿层和C矿层,B矿层划分出3条铜矿体,其中B1、B2号矿体为主矿体;C矿层矿体划分出5个矿体,其中C1号矿体为主矿体,也是察尔其铜矿区的主矿体。矿区新近系康村组含矿层沉积特征为扇三角洲前缘亚相的水下分流河道微相和分流间湾微相,滨浅湖亚相的浅湖砂坝微相和浅湖泥微相,局部出现深湖相。康村组沉积物来自再旋回造山带物源区,含矿砂岩的碎屑来自灰岩、泥灰岩、砂岩、泥岩、变质岩、深成岩、火山岩等,与北邻天山造山带的岩性相当。认为察尔其铜矿床属于与新近纪湖相沉积作用有关的砂岩型铜矿,并将铜矿形成过程分为2个成矿期3个成矿阶段,建立了矿床成矿模式。