极性期 [
jí xìng qī]
[地物] polarity epoch
- 结果表明,B/M界线出现在L7的底部,并且在剖面下部出现了松山负向期的贾拉米洛正向极性亚带。
The results indicate that the B/M boundary appears at the top of L7 and that the Jaramillo normal polarity subzone of the Matuyama negative polarity zone appears in the lower part of the section. - 然而,如果假设南寨剖面与黄土高原上洛川标准剖面有着相当的沉积速率,60米不间断的沉积物将不仅包含整个布容正极性期,还将覆盖部分松山负极性。
However compare to the standard Luochan section on the Chinese Loess Plateau, the Nanzhai section (60m) should have part of the Matuyama reversal polarity.
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