黑龙江省绥化市望奎县前头村—幺屯村四方台组剖面沉积演化特征

剖面位于黑龙江省绥化市四方台镇前头村一幺屯村,区域构造属松辽盆地东南隆起区,沉积环境为干旱-半干旱.地层构造总体呈一个缓背斜的褶皱形态,其中以北翼出露地层较全,出露厚度85.37 m,共划分为12个层；南翼出露厚度50.13 m,划分为4层.通过对剖面地层的细致考察并结合区域地质资料,剖面四方台组地层沉积了一套以红与杂色的砂泥岩,并得出本区四方台组地层底部和中部的沉积相类型属湖泊相滨浅湖亚相,随着盆地东部的持续抬升,顶部转为曲流河相.

Heilongjiang province Suihua city Wangkui County village of Yao Tuncun in front of Sifangtai formation sedimentary evolution characteristics

This section is located in the Heilongjiang province Suihua city Sifangtai town before the village - Yao Tuncun, regional structure of Southeast Uplift in Songliao Basin, sedimentary environment in arid and semiarid. The formation structure is generally a gentle anticlinal fold, with the North Wing exposed strata is full, with the thickness of 85.37 meters, is divided into 12 layers; flank exposed the thickness of 50.13 meters, is divided into 4 layers. Based on the strata investigates and regional geological data, profiles of Sifangtai formation deposition by a red and mottled sandstone and mudstone, and the District of Sifangtai formation in middle and bottom of the sedimentary facies type belongs to lake shore shallow lake subfacies, along with the eastern basin continued uplift, top to meandering river phase.