High-resolution δ18O and δ13C records across the Piacenzian/Gelasian boundary...
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Level: This elevation is measured with respect to the reference level: the Nicola bed (sapropel layer A5), whose top is typically used as a lithological marker to highlight the...
层级：本次高程测量以参考基准面为参照：尼古拉层（Nicola bed，sapropel layer A5），其顶面通常被用作岩性标志层（lithological marker）以标示……
