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库木库里盆地位于青藏高原北缘,与柴达木盆地一山之隔,是二者的过渡地带,也是高原主体部分向NE扩展的前缘地区;现今构造表现为被3条大型活动构造带(走滑的阿尔金断裂带、东昆仑断裂带和逆冲的祁漫塔格褶皱逆冲系)所夹持。因此,该盆地对于研究青藏高原北缘的构造活动性、活动历史,探讨高原的扩展模式具有十分重要的意义。虽然库木库里盆地南、北两侧均发育活动性很强的大型走滑断裂,但是在盆地中央发育1条大型背斜,走向NWW-SEE,与祁漫塔格褶皱逆冲系和柴达木盆地内的褶皱构造走向一致,说明盆地目前遭受NNE向的挤压。通过对盆地地形横、纵剖面和阶地展布形态的分析,得出背斜有自西向东扩展变形的特征;野外调查和测年结果显示,背斜东段冰川融水形成了大型冰水扇,形成年龄为(87.09±2.31)~(102.4±3.7)ka,进而获得背斜东段自晚更新世以来平均隆升速率的最大值为(2.78±0.28)~(3.28±0.28)mm/a。库木库里盆地整体的活动性很强,在构造上与其北边的柴达木盆地类似,都受控于阿尔金断裂南侧的NNE向的区域挤压作用。
Located in the northern margin of the Qinghai-Xizang Plateau and across the hill from the Qaidam basin, the Kunmucuri Basin is a transition zone between the two and is also a frontal area where the main part of the plateau extends to the NE. Now, the structure is characterized by three large-scale activities Belt (strike-slip Altun fault zone, East Kunlun fault zone and thrust Qi Mantag fold fold thrust system). Therefore, the basin is of great significance for the study of tectonic activities, activity history and exploration of the plateau expansion pattern in the northern margin of the Qinghai-Tibet Plateau. Although large active strike-slip faults are developed in both south and north sides of the Kumkur Basin, a large anticline is developed in the central part of the basin and runs toward the NWW-SEE. The fold structure in the Damu Basin is consistent, indicating that the basin is currently subjected to NNE-direction squeezing. Based on the analysis of the horizontal and vertical profiles of the terrain and the distribution patterns of terraces, the anticline has been extended from west to east. The field surveys and the dating results show that the glaciers in the eastern anticline formed a large ice-floe (87.09 ± 2.31) ~ (102.4 ± 3.7) ka, and the maximum of the average uplift rate since the late Pleistocene in the eastern anticline was (2.78 ± 0.28) ~ (3.28 ± 0.28) mm / a . The Cumuri Basin, as a whole, is highly mobile and structurally similar to its northern Qaidam basin, controlled by the NNE-direction regional crustal south of the Altyn Tagh fault.