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K1孔位于罗布泊“耳轮”构造的北缘。磁性地层初步研究得知,在孔深61～62 m处为界,以上为布容正向极性时(Br),以下为松山反向极性时(Ma)。在孔底97～100 m处的正向极性偏移应属Cobb Mountains事件,对照S.C.Cande和D.V.Kent修定的古地磁极性年表,孔底地层的年代为1.2 Ma,归属早更新世中期。中更新世地层厚50余米,晚更新世地层厚10 m左右,全新世地层厚度小于5 m。根据古地磁资料计算得知,罗布泊K1孔的古纬度为34.1°。另据库车河剖面和恰恰剖面的古地磁资料计算,它们的古纬度分别为26.7°和20.0°,与现纬度相比,它们的共同特点是都在向北位移,这一规律与印度洋板块和欧亚板块挤压碰撞效应,及塔里木盆地南缘阿尔金断裂的左行走滑运动密切相关。
K1 holes are located on the northern edge of the Lop Nur “helix” structure. According to the preliminary study on the magnetic strata, it is bounded by the hole depth of 61 ~ 62 m at the time of the forward polarity of the cloth (Br), and the following is the reverse polarity of the Songshan Mountain (Ma). The positive polarity offset at the depth of 97-100 m at the bottom of the hole should belong to the Cobb Mountains event. According to the palaeomagnetic polarity chronology modified by SC Cande and DV Kent, the age of the bottom hole is 1.2 Ma, belonging to the Early Pleistocene Medium term. The Middle Pleistocene thickness is more than 50 meters, Late Pleistocene thickness of about 10 m, Holocene thickness of less than 5 m. According to paleomagnetic data, the ancient latitude of K1 hole in Lop Nur is 34.1 °. According to the Kuqahe profile and the paleomagnetic data of the exact profile, their ancient latitudes are 26.7 ° and 20.0 °, respectively. Compared with the present latitudes, their common feature is that they are all displaced to the north. This is consistent with the fact that the Indian Ocean plate It is closely related to the extrusion collision of the Eurasian plate and the left-lateral strike-slip of the Altyn Tagh fault in the southern margin of the Tarim Basin.