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引用本文:纵瑞文,龚一鸣. 西准噶尔克拉赛勒克山和布克河组晚泥盆世化石的发现及其地层归属[J]. 中国地质, 2019, 46(6): 1259-1269.
ZONG Ruiwen,GONG Yiming. The discovery of the Late Devonian fossils from the Hebukehe Formation and its stratal position in Kelasaileke Mountain, western Junggar, Xinjiang[J]. Geology in China, 2019, 46(6): 1259-1269(in Chinese with English abstract).
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西准噶尔克拉赛勒克山和布克河组晚泥盆世化石的发现及其地层归属
纵瑞文1,2, 龚一鸣1
1.中国地质大学 (武汉) 生物地质与环境地质国家重点实验室, 湖北 武汉 430074;2.中国科学院资源地层学与古地理学重点实验室, 中国科学院南京地质古生物研究所, 江苏 南京 210008
摘要:
西准噶尔地区广泛分布的和布克河组已被证明是洪古勒楞组的晚出异名,本文在西准噶尔克拉赛勒克山原划为下石炭统“和布克河组”的碎屑岩地层中发现了丰富的动、植物化石,包括:三叶虫Phacops sp.,菊石Manticoceras sp.,腕足类Tylothyris sp.,Aulacella sp.,“Mucrospirifer” sp.,Cyrtospirifer sp.,植物Leptophloeum rhombicum,Syringodendron sp.,Knorria sp.,其时代显示为晚泥盆世。根据岩性组合特征将其厘定为上泥盆统铁列克提组,而非“和布克河组”的替代名称洪古勒楞组。通过区域地质调查工作,证明了西准噶尔玛依力山地层小区内没有洪古勒楞组的分布,其晚泥盆世地层仅由铁列克提组组成,洪古勒楞组只分布在沙尔布尔提山地层小区,两个地层小区的界线为孟布拉克北侧至谢米斯台山南坡的深大断裂。晚泥盆世两个地层小区沉积分异明显,直到早石炭世早期才进入统一的盆地演化阶段,地层小区的分区性也随之消失。
关键词:  晚泥盆世  铁列克提组  和布克河组  斜方薄皮木  地层区划  西准噶尔  新疆  地质调查工程
DOI:10.12029/gc20190602
分类号:P535
基金项目:国家自然科学基金(41702006,41290260,41872034)、中国科学院资源地层学与古地理学重点实验室(中国科学院南京地质古生物研究所)开放课题(2017KF05)和中国地质调查局项目(1212011120502,1212011220245)联合资助。
The discovery of the Late Devonian fossils from the Hebukehe Formation and its stratal position in Kelasaileke Mountain, western Junggar, Xinjiang
ZONG Ruiwen1,2, GONG Yiming1
1.State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, Hubei, China;2.Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, Jiangsu, China
Abstract:
The Hebukehe Formation is widely distributed in western Junggar. It is the synonym of the Hongguleleng Formation. This paper presents abundant fossils from the clastic strata which were previously assigned to the Lower Carboniferous Hebukehe Formation in Kelasaileke Mountain, western Junggar. These fossils include trilobites Phacops sp., ammonoids Manticoceras sp., brachiopods Tylothyris sp., Aulacella sp., "Mucrospirifer" sp. and Cyrtospirifer sp., plants Leptophloeum rhombicum, Syringodendron sp. and Knorria sp.. The age of these fossils is attributed to the Late Devonian. According to the lithologic association, the fossiliferous strata are redefined as the Upper Devonian Tielieketi Formation, rather than the Hongguleleng Formation. Regional geological survey reveals that the Upper Devonian of Mayili Mountain stratomicroregion is only composed of the Tielieketi Formation, without the Hongguleleng Formation. The latter is only distributed in the Shaerbuerti Mountain stratomicroregion. The boundary of the two stratomicroregions is the deep fault located in northern Mengbulake to south slope of Xiemisitai Mountain. These two stratomicroregions experienced obvious sedimentary differentiation during the Late Devonian, and gradually evolved into the evolutional stage of uniform basin environment until the early Early Carboniferous, announcing a gradual disappearance of stratigraphic regionalization of the stratomicroregions.
Key words:  Late Devonian  Tielieketi Formation  Hebukehe Formation  Leptophloeum rhombicum  stratigraphic regionalization  western Junggar  Xinjiang  geological survey engineering