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介绍了青藏高原羌塘盆地和措勤盆地的深部磁场特征，用隐伏裂陷槽的观点分析了这些特征。结合ＭＴ电性层深度图和中生界沉降带的厚度，将南北向正磁异常带（东经８９°－９０°）解释成晚古生代隐伏裂陷槽。该裂陷槽对北羌塘坳陷中生代的构造单元、沉积以及油气组合有很重要的控制作用。
The characteristics of the deep magnetic field in the Qiangtang Basin and the Cuoqin Basin of the Qinghai-Tibet Plateau are introduced, and these characteristics are analyzed from the point of view of the hidden rift groove. Combined with the MT electrical depth map and the Mesozoic sedimentary zone thickness, the NS-trending anomalous anomalous zone (longitude 89◦-90◦E) is interpreted as a late Paleozoic implicit rift channel. The rift trough plays an important role in controlling the Mesozoic tectonic units, sediments and hydrocarbon assemblages in the northern Qiangtang depression.