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| ISEA reversed event in the Cretaceous Normal Super-chron （CNS）： ^40Ar／^39Ar dating and paleomagnetic results | |
| 作者姓名： | SHI Ruiping HE Huaiyu ZHU Rixiang & PAN Yongxin Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China |
| 作者单位： | SHI Ruiping,HE Huaiyu,ZHU Rixiang & PAN Yongxin Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China |
| 摘 要： | ThegeomagneticfieldwasfoundtobeofnormalpolarityforalongtimeduringtheCretaceousbyHelsleyandSteiner1]andthiswaslaternamedasCretaceousNormalSuperchron(CNS)2].TheCNSlastedalmost37Ma(120—83Ma).Severalabnormalgeologicalevents,suchasanoceanicanoxicevent,alargenumberofvol-canismandglobalclimaticwarmingduringtheCNShavebeenreported3—11].Thishasledtomanyquestionsbeingraised.IsittruethattheEarthsmagneticfielddidnotreverseatallintheCNS?Ifitdidreverse,howmanytimesandwhendidthishappen?Istherea… |
| 关 键 词： | ISEA 白垩纪 岩石磁性 古地磁 ^40Ar／^39Ar 年代测定 辽宁西部地区 |
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