Paleomagnetic measurements demonstrate that the Jijiagou section which is the stratotype one of Baode Stage of the Neogene in China records 12 normal and 11 reversed polarity zones.
古
磁测量表明,中国新近系保德
界线层型,山西保德冀家沟剖面记录了12个正极性段与11个负极性段。
质】新第三纪的（迄今2200至250万年前间，许
哺乳动物和早先形态的人类在这一时期出）；新近纪的（等于Neocene）Paleomagnetic measurements demonstrate that the Jijiagou section which is the stratotype one of Baode Stage of the Neogene in China records 12 normal and 11 reversed polarity zones.
古磁测量表明,中国新近系保德界线层型,山西保德冀家沟剖面记录了12个正极性段与11个负极性段。
The basin tectonic model: it is intermont basin during late Jurassic to early Cretaceous, developed into faulted-lacustrine basin in Eogene, and evolved into depression in Neogene and Quaternary.
“盆”构造发育模式为：从晚侏罗世到白垩纪末期发育的山间“盆”
、发展到早第三纪断陷湖盆的发育、再演化为晚第三纪及第四纪陷发育段。
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