Pb210 dates of marine sediment core BC660

The box core (BC) 660 was collected in 2012 from a trough on the northern shelf of South Georgia (53° 46.913' S; 38° 7.708' W) during research cruise JR257 aboard the RRS James...箱式岩芯（box core, BC）660于2012年搭载RRS詹姆斯号（RRS James）执行JR257号科考航次期间，在南乔治亚岛北部陆架的一处海槽中采集获得，其采集坐标为南纬53° 46.913'、西经38° 7.708'。