The Carboniferous-Permian polarity sequence of the Anle Village section, Guangnan, Yunnan is established by the magneticstratigraphy study of this section.
本文通过云南广南安乐村剖面的磁性地层学研究，获得了该剖面石炭-二叠系的极性序列。
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The second dating method was palaeo - magnetic analysis, or magnetic polarity stratigraphy .