A geomagnetic polarity time scale for the period 0–17 Ma, based on 40Ar/39Ar plateau ages for selected field reversals

A geomagnetic polarity time scale for the period 0–17 Ma, based on 40Ar/39Ar plateau ages for selected field reversals
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0–17 Ma 周期的地磁极性时间尺度,基于选定磁场反转的 40Ar/39Ar 高原年龄

DOI:
10.1029/93gl01876
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发表时间:
1993
影响因子:
5.2
通讯作者:
A. Baksi
A. Baksi
中科院分区:
地球科学1区
文献类型:
--
作者:
A. Baksi

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利用∼为1、2、10、16和34 Ma的选定磁场反转的40Ar/39Ar平台年龄,遵循Cande和Kent1992年的技术,建立了地磁极性时间尺度。这与以前的GPTS明显不同,特别是在中新世中后期;后中新世时期的克莱恩人的年龄与天体年代学技术得出的值是一致的。这一GPTS的改进有待于在3-8 Ma和11-15 Ma的时间范围内获取40Ar/39Ar平台年龄以进行场反转。
Utilizing 40Ar/39Ar plateau ages for selected field reversals at ∼ 1, 2, 10, 16 and 34 Ma, a geomagnetic polarity time scale (GPTS) is constructed, following the technique of Cande and Kent [1992]. This differs markedly from previous GPTS, especially in middle-late Miocene time; the ages for the chrons in post-Miocene time are in agreement with values derived by the astrochronological technique. Refinements in this GPTS await acquisition of 40Ar/39Ar plateau ages for field reversals in the time frames 3–8 Ma and 11–15 Ma.