【摘要】 以老茫崖—阿尔干和格尔木—额济纳旗 2条 1∶5 0万实测重力剖面数据为基础 ,研究了青藏高原北缘的重力场特征 ,划分了 5个地质构造单元 ,计算并分析了研究区Airry均衡异常 ,推测阿尔金断裂带和北祁连断裂带为青藏高原北缘的动力边界。更多还原

【Abstract】 Based upon the 1∶500 000 gravity profiles of Laomangai-Argan, a study has been made on the gravity field features of the Qinghai-Tibet plateau′s north margin. This area can be divided into five geo-tectonic units. The Airy isostatic anomaly in this area has been calculated and analyzed. It is speculated that the Altun and the North Qilian fault zone are considered to be the dynamic boundary of the northern margin of the Qinghai-Tibet plateau.更多还原