摘要：
在柴达木盆地南缘野外地质调查过程中，在祁曼塔格山前石拐子剖面下石炭统石拐子组和乌图美仁庆华铁矿附近剖面的上石炭统缔敖苏组中发现了大量Chondrites遗迹化石。经鉴定，研究区的Chondrites遗迹化石主要包括Chondrites fenxiangensis Yang，1984（分乡丛藻迹）；Chondrites filifalx Volk，1964（细枝丛藻迹）和Chondrites maqianensis Yang，1988（玛沁丛藻迹）3个遗迹种。根据研究区的Chondrites遗迹化石特征，结合岩性特征和其他实体化石资料，认为石拐子地区早石炭世为台洼沉积环境，乌图美仁庆华铁矿地区晚石炭世为局限碳酸盐岩台地沉积环境。另外，探讨了生物扰动对两个地区储集层的改造作用。该研究对恢复柴达木盆地南缘的沉积环境和古生态以及评价研究区的储集层物性具有重要的借鉴意义。
Abstract:
Abstract Abundant trace fossils Chondrites were found in the Lower Carboniferous Shiguaizi Formation in Shiguaizi section at the toes of the Qimantage Mountains and the Upper Carboniferous Di’aosu Formation near Qinghua iron mine of Wutumeiren area in the south margin of Qaidam Basin. Three ichnospecies were identified: Chondrites fenxiangensis Yang，1984; Chondrites filifalx Volk，1964; Chondrites maqianensis Yang，1988. It is considered that the Early Carboniferous in Shiguaizi area was dominated by syneclise environment and the Upper Carboniferous of Qinghua iron mine was a restricted carbonate platform according to the trace fossils characters and the lithological characteristics as well as other body fossils information. Bioturbated reworking on reservoir, which is an essential influence in the reservoir quality, was also investigated. The investigation has a great reference significance in reconstructing the sedimentary environment and appraising the reservoir quality in the south margin area of Qaidam Basin.
牛永斌1,2 钟建华1,3 钟福平3 高玉飞1 禚元杰1. 柴达木盆地南缘石炭系Chondrites遗迹化石的发现及其地质意义[J]. 古地理学报, 2008, 10(5): 529-535.
Niu Yongbin1,2 Zhong Jianhua1,3 Zhong Fuping2 Gao Yufei1 Zhuo Yuanjie1. Discovery of trace fossils Chondrites from the Carboniferous in south margin of Qaidam Basin andits geological significance[J]. JOURNAL OF PALAEOGEOGRAPHY, 2008, 10(5): 529-535.