(Fig. 5.2) Profile of Lead/Calcium ratios of an Arctica islandica shell collected off the coast of Northeast Iceland
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Shell increments were used to assign calendar years to all Pb/Ca values.
壳体生长增量(shell increments)被用于为所有铅钙比(Pb/Ca)数值标定对应的公历年份。
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2025-11-11



