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采用４０Ａｒ／３９Ａｒ法和激光微区等时线方法，对南极南设得兰群岛利文斯顿岛东部产出的鲍勒斯山组火山岩重新进行了年龄测定。结果表明，４５Ｄ安山质熔岩和２６２玄武安山质熔岩的等时年龄分别为（１０５．６２±２．１１）Ｍａ和（１１１．４８±２．２３）Ｍａ，其４０Ａｒ／３９Ａｒ初始比与尼尔值相当，岩石中不含过剩氩，表明等时年龄代表岩石真正的形成年龄。脉状产出的Ａ９３５２细晶岩的４０Ａｒ／３９Ａｒ坪年龄为（９６．７±１．６）Ｍａ，计算得到等时年龄为９６．６Ｍａ，晚于熔岩喷发而形成。新的年龄数据证实了鲍勒斯山组火山岩形成于白垩纪。白垩纪火山活动曾影响了整个利文斯顿岛，在赫德半岛出露的鲍勒斯山组火山岩曾被较年轻火山岩所覆盖，构造抬升使其出露。
Using the 40Ar / 39Ar method and the laser microanalysis, the volcanic rocks of the Bollasian Group produced in the eastern part of Livingston Island, South Shetland, South Antarctica were re-dated. The results show that the isochron ages of (105.62 ± 2.11) Ma and (111.48 ± 2.23) Ma for the 45D andesitic lavas and 262 basalt anamorphic lava are respectively The Neil value is quite high, and there is no excess argon in the rock, indicating that the isochron age represents the true age of formation of the rock. The 40Ar / 39Ar plateau of the vein-derived A9352 nodules is (96.7 ± 1.6) Ma, and the isochronous age is 96.6Ma, which is later than the lava eruption. New age data confirm that the Bollasian group volcanic rocks formed during the Cretaceous. Cretaceous volcanic activity had affected the entire Livingston Island, the Boulders Group volcanic rocks exposed in the Hart Peninsula have been covered by younger volcanic rocks, tectonic uplift to expose.