《Table 1 Magnetization rates of drill cores from the Tarim basina)》

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《Structural architecture of Neoproterozoic rifting depression groups in the Tarim Basin and their formation dynamics》

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a) The tests of the natural remanent magnetic intensity were carried out on the American vertical 2G-755R superconducting magnetometer in the Paleomagnetic Laboratory of the Institute of Geomechanics，Chinese Academy Geological Sciences.The magnetic suscep

Basic rocks in the Cryogenian or Ediacaran occur in the outcrops in the peripheral orogens of the Tarim Basin，and have strong magnetic properties.For example，the mean magnetic susceptibilities of three layer diabases of the Sugetbrake Formation in the lower Ediacaran，which are located in the Aksu and Urshi areas of the northwest margin of the basin，are 3893.6×10-5SI，4571.8×10-5SI and4483.9×10-5SI，respectively（Yang et al.，2012）.The peridotites and gabbros of the Proterozoic in the Hongliugou of Altun Mountain at the southeast margin of the basin have maximum magnetic susceptibilities of 23509.8×10-5SI，and an average magnetic susceptibility of 1032.4×10-5SI，which indicate that both the basic and ultrabasic rocks can cause strong magnetic anomalies.In this study，the magnetic properties of cores from several principal exploration wells are analysed（Table 1），and combined with previous research results（Yan et al.，2014）demonstrate that the basic and ultrabasic igneous rocks have higher magnetic susceptibilities，whereas the acid igneous rocks，low-grade metamorphic rocks，and sedimentary rocks have lower magnetic susceptibilities.The lithologies and magnetic susceptibilities of the Wells TZ33，YD2，and Well F1 are quite different（Table 1；Figure 10a）.