CAJ | 학술논문

博什库尔-成吉斯火山弧中的黑山头组分布于西准噶尔谢米斯台山西缘，主要为一套火山碎屑岩-中酸性火山岩组合，其中酸性火山岩主要为安山岩、碎裂岩化安山岩、英安岩。通过对黑山头组中的英安岩进行LA-ICP-MS锆石U-Pb测年，获得其年龄为(331±2.4) Ma（n=13，MSWD=0.39，95%置信度），时代为早石炭世。证实博什库尔-成吉斯火山弧岩浆活动在早泥盆世以后并未完全结束，并延续到了早石炭世。
박십고이-성길사화산호중적흑산두조분포우서준갈이사미사태산서연，주요위일투화산쇄설암-중산성화산암조합，기중산성화산암주요위안산암、쇄렬암화안산암、영안암。통과대흑산두조중적영안암진행LA-ICP-MS고석U-Pb측년，획득기년령위(331±2.4) Ma（n=13，MSWD=0.39，95%치신도），시대위조석탄세。증실박십고이-성길사화산호암장활동재조니분세이후병미완전결속，병연속도료조석탄세。
The Heishantou Formation volcanic rocks of Boshchekul-Chingiz volcanic arc is situated in the western part of Xiemisitai Mountains, northern West junggar. It consists of pyroclastic rocks and neutral-acidic volcanic rocks, most of this neutral-acidic volcanic rocks are andesites, cataclasites of andesites and dacites. LA-ICP-MS dating was used to determine the zircons from dacites of the Heishantou Formation, and yielded zircon U-Pb age value of 331±2.4Ma(n=13, MSWD=0.39, 95% confidence), it belongs to the Early Carboniferous. It confirms the magmatism of Boshchekul-Chin-giz volcanic arc is not completely finished after the Early Devonian, it continued to the Early Carboniferous.