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以Ｋ－Ａｒ稀释法和４０Ａｒ／３９Ａｒ阶段加热法对利文斯顿岛百尔斯半岛的熔岩和次火山岩测定了同位素年龄。新的年龄数据表明，该区火山活动在晚侏罗纪末即已开始，一直持续到晚白垩世，存在着三期火山活动的产物。侏罗纪末～早白垩世初的火山活动除有熔岩（１４６Ｍａ，１３７Ｍａ）喷出外，还发育有辉长岩侵入体（１３５Ｍａ）和辉绿岩岩墙（１２９Ｍａ）等次火山岩。安山岩（１１４Ｍａ）和石英斑岩（９４Ｍａ）则是早白垩世火山活动的结果。半岛东部具沉积夹层的玄武岩（７１Ｍａ）是区域上晚白垩世～早第三纪火山活动的代表。
The isotopic age of lava and subvolcanic rocks in the Pils Peninsula, Livingston Island was determined by K-Ar dilution and 40Ar / 39Ar stage heating. New age data suggest that the volcanic activity in the area started at the end of the Late Jurassic and continued into the Late Cretaceous. There are three stages of volcanic activity. In addition to lava (146Ma, 137Ma), volcanic activity from the end of Jurassic to early Cretaceous also developed subvolcanic rocks such as gabbro intrusive (135Ma) and diabase dyke (129Ma). Andesite (114Ma) and quartz porphyry (94Ma) are the result of Early Cretaceous volcanic activity. The basalts with sedimentary interlayer in the east of the peninsula (71Ma) represent the Late Cretaceous to Early Tertiary volcanic activity in the area.