木孜塔格幅、鲸鱼湖幅地质调查新成果及主要进展

New results and major progress in regional geological survey of the Muztag and Jingyu Lake sheets

发现并填绘出前寒武纪地层单元。于木孜塔格地区下石炭统托库孜达坂群中发现早石炭世放射虫。在阿尔格山大断裂以南中二叠统鲸鱼湖组灰岩中首次发现冷温型单通道。在黑顶山缝合带中识别出畅流沟-向阳泉和木孜塔格蛇绿混杂岩带,二者分别形成于新元古代早、晚期。对各构造带中的岩石地层进行了古地磁研究与对比,建立了各自的古地磁极移曲线。获取一批新生代火山岩的同位素测年资料。

The Precambrian stratigraphic unit has been found and mapped. Early Carboniferous radiolarians were found in the Lower Carboniferous Tokozidaban Group in the Muztag area. Cold-warm-type Monodiexodina was for the first time found in limestone of the Middle Permian Jingyu Lake Formation south of the Arkatag fault. The Changliugou-Xiangyangquan and Muztag ophiolitic mélange belts were recognized in the Heidingshan suture zone, both of which formed in the early and late Neoproterozoic. Paleomagnetic study and correlation of rocks and strata were conducted in various tectonic belts, and their respective paleomagnetic polar wandering curves were constructed. A group of isotope age data of Cenozoic volcanic rocks were obtained.