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出露于扬子克拉通北缘大洪山地区的打鼓石群一直被认为是一套中元古代沉积地层，其上被花山群不整合覆盖。但是由于缺少可靠的年龄依据，打鼓石群与同属扬子克拉通北缘的神农架群以及其他相关地层的对比关系一直存有争议。本文作者利用高精度高分辨率离子探针质谱仪（SHRIMP）测定了打鼓石群中凝灰岩的锆石UPb年龄，并利用激光烧蚀多接收器电感耦合等离子体质谱仪（LAMCICPMS）测定了打鼓石群凝灰岩和基本同时代的神农架地区神农架群上亚群凝灰岩的锆石LuHf同位素。这是迄今为止第一次测得了打鼓石群罗汉岭组凝灰岩年龄（1 225±19） Ma和（1 239±23） Ma；锆石LuHf同位素结果显示打鼓石群罗汉岭组凝灰岩与神农架群上亚群野马河组凝灰岩具有相似的LuHf同位素特征：176Hf/177Hf初始值介于0.282 172~0.282 397，εHf(t)值为4.9~12.0， TCDM=1 150~1 943 Ma。结合现有区域地质资料，我们认为打鼓石群与神农架群上亚群属于同时期沉积物，形成于超级地幔柱主导的哥伦比亚超大陆裂解背景。
The Kwupuk Group, exposed in the Dahongshan area on the northern margin of the Yangtze craton, has long been considered as a set of Mesoproterozoic sedimentary formations overlaid by the unconformity of Huashan Group. However, due to the lack of a reliable age basis, the contrast between the Taigu Formation and the Shennongjia Group and other related formations in the northern margin of the Yangtze craton has been controversial. In this paper, the zircon UPb age of tuff in the drum rock group was determined by using high-resolution high-resolution ion-probe mass spectrometry (SHRIMP). Laser ablation multi-receiver inductively coupled plasma mass spectrometry (LAMC ICP-MS) were used to determine the zircon Lu-Hf isotopes of the Tuguanshi tuff and the upper-basal tuff in the Shennongjia group in the same period. This is the first time so far measured the tuffstone age of the Luohanling Formation (1 225 ± 19) Ma and (1 239 ± 23) Ma in the Kwufu Stone Group. The LuHf isotopic results of the zircons show that the tuff rocks of the Luohanling Formation and the Shennongjia The tuffs of the Mhe-Shangnian Makahe Formation have similar LuHf isotopic characteristics: 176Hf / 177Hf initial values ranged from 0.282 172 to 0.282 397, εHf (t) values ranged from 4.9 to 12.0, and TCDM values ranged from 1 150 to 1 943 Ma. Combined with the existing regional geological data, we believe that the Taigu Group and the Shennongjia Group belong to the same period of sediments, formed in the supercontinental plume dominated by the super mantle plume.