The Qiangtang Basin, located in the Tibetan Plateau, is an appropriate area to verify the Lhasa–Qiangtang collision, which was recorded by the middle-upper part of the Yanshiping Group (the Xiali and Suowa Fms) in the basin. However, the chronology of the Xiali and Suowa Fms is HYPERLINK “javascript:;” controversial, which limits comprehending the timing of the Lhasa–Qiangtang collision. More importantly, HYPERLINK “javascript:;” oil HYPERLINK “javascript:;” shale and salt springs were exposed in the Xiali and Suowa Fms in the basin. 544 paleomagnetic samples were collected from the Yanshiping section in the basin in order to reveal the timing of the Lhasa–Qiangtang collision from the view of paleomagnetic ages of the two formations. However, we did not give credible magnetostratigraphic ages of the two formations because of ammonite fossils, a global primary standard for the Jurassic strata correlation, without being found in the last study. Yin (2016) revised the long-term HYPERLINK “javascript:;” controversial paleontological age of the Suowa Fm. from a Tithonian age of the Late Jurassic or a Berriasian age of the Early Cretaceous, to a Middle Bathonian–Middle Callovian age of the Middle Jurassic based on new ammonite fossils. Considering ammonite fossils as a powerful tool and a global primary standard for the Jurassic strata correlation, we attempted to correlate the last magnetostratigraphy with the GPTS 2012 again. Magnetostratigraphic ages of 164.0–160.2 Ma and 160.2–156.8 Ma for the Xiali and Suowa Fms are suggested, respectively. The timing of the Lhasa–Qiangtang collision (156.8–154.9 Ma) is revealed from the magnetostratigraphic ages and the zircon U–Pb age of the Xueshan Fm, 154.9 (+6.8/−1.6) Ma, overlying the Suowa Fm in the Yanshiping section.

羌塘盆地位于青藏高原，是验证拉萨—羌塘碰撞的适宜区域，盆地内岩石坪群中上部（夏里组、索瓦组）记录了拉萨—羌塘碰撞。然而，夏利和索瓦Fms的年表是超链接“javascript:;”存在争议，这限制了对拉萨-羌塘碰撞发生时间的理解。更重要的是，超链接“javascript:;”石油超链接“javascript:;”盆地夏黎组、索洼组出露页岩和盐泉。为了从拉萨-羌塘地层的古地磁年龄角度揭示拉萨-羌塘碰撞的时代，在盆地内雁石坪剖面采集了544块古地磁样品。然而，由于在上一次研究中没有发现菊石化石（侏罗纪地层对比的全球主要标准），我们没有给出这两个地层的可信磁性地层年龄。 Yin (2016) 修改了长期超链接“javascript:;”索瓦组古生物时代存在争议。从晚侏罗世的提通阶或早白垩世的贝里亚阶，到基于新菊石化石的中侏罗世的中巴通阶-中卡洛夫阶。考虑到菊石化石是侏罗纪地层对比的有力工具和全球主要标准，我们尝试再次将最后一次磁地层学与 GPTS 2012 进行关联。夏利组和索瓦组的磁性地层年龄分别为164.0~160.2 Ma和160.2~156.8 Ma。岩石坪剖面索瓦组上覆的雪山组磁性地层年龄和锆石U-Pb年龄揭示了拉萨-羌塘碰撞的时间（156.8~154.9 Ma），雪山组为154.9（+6.8/−1.6）Ma 。