摘要
获得了近百万平方千米、精度达1×1 0 -5m/s2 的重力基础图件和处理解释图件;根据重力资料对大地构造进行了分区;推断了一批断裂构造;追踪、圈定了大型隐伏或半隐伏岩浆岩带;对多金属成矿带和油气盆地进行了推测;对区内的基底和沉积财内部的主要密度界面进行了研究,首次编制了中生界底和古生界底两个密度界面埋深图;对地壳厚度和地壳的均衡特征进行了研究。
The basic and interpretation maps with a precision of 1 × 10-5 m/s2 and an area of nearly one million km2 of the surveyed area are constructed for the east-central part of the Qinghai-Xizang Plateau. The results of research based on the gravity data include: the division of tectonic units; delineation of a number of faults; delimitation of giant buried and partly-buried magmatic belts; prediction of polymetallogenic zones and petroleum basins; examination of the major density boundaries in the basement and deposits; compilation of two burial depth diagrams of the density boundaries at the bases of the Mesozoic and Palaeozoic strata, respectively, and exploration of the crustal thickness and equilibrium.
出处
《沉积与特提斯地质》
CAS
CSCD
2005年第1期148-152,共5页
Sedimentary Geology and Tethyan Geology
关键词
1:100万
重力调查
成果与进展
青藏高原中东部
1∶1 000 000
gravimetric survey
development
the east-central part of the Qinghai-Xizang Plateau
