阿尔金断裂西南端走向及延伸的区域重力场制约

阿尔金断裂带作为青藏高原北部边界的重要组成部分,长期以来受到国内外地学界的广泛关注与研究。笔者通过对区域重力场的分析,认为阿尔金断裂的西南端并非止于郭扎错,而是在郭扎错北东附近分为两个分支,一支经郭扎错继续向南西西延伸,过龙木错后由空喀山口进入克什米尔,另一支继续向南西延伸,经吉普以西止于班公湖附近的班公湖—怒江结合带,并且,经吉普以西止于班公湖附近的这一分支形成时间要早于经郭扎错、龙木错后由空喀山口进入克什米尔的这一分支。

Constraints of the regional gravitational field on the trend and extension of the southwestern part of the Altyn Tagh fault

The Altyn Tagh fault as an important component part of the northern boundary of the Qinghai-Tibet Plateau has long attracted attention of the geoscience communities both at home and abroad. Based on an analysis of the regional gravitational field, the authors think that the southwestern part of the Altyn Tagh fault does not end at Gozha Co but is divided into two branches near the northeast of Gozha Co. One branch passes through Gozha Co and continues to extend in a WSW direction, and after passing Lungmu C...