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北京延庆千家店盆地土城子组古生物化石及古气候沉积环境——延庆地区首次发现疑似恐龙骨骼化石

贺瑾瑞, 焦润成, 南赟, 郝春燕, 张玲玲, 冉淑红, 宋庆伟, 张翊超, 赵丹凝, 程素珍

贺瑾瑞, 焦润成, 南赟, 郝春燕, 张玲玲, 冉淑红, 宋庆伟, 张翊超, 赵丹凝, 程素珍. 2017: 北京延庆千家店盆地土城子组古生物化石及古气候沉积环境——延庆地区首次发现疑似恐龙骨骼化石. 地质通报, 36(8): 1319-1329.
引用本文: 贺瑾瑞, 焦润成, 南赟, 郝春燕, 张玲玲, 冉淑红, 宋庆伟, 张翊超, 赵丹凝, 程素珍. 2017: 北京延庆千家店盆地土城子组古生物化石及古气候沉积环境——延庆地区首次发现疑似恐龙骨骼化石. 地质通报, 36(8): 1319-1329.
HE Jinrui, JIAO Runcheng, NAN Yun, HAO Chunyan, ZHANG Lingling, RAN Shuhong, SONG Qingwei, ZHANG Yichao, ZHAO Danning, CHENG Suzhen. 2017: A discussion on Tuchenzi fossils and paleoclimate sedimentary environment in Qianjiadian basin of Yanqing County:Suspected dinosaur bones discovered for the first time in Yanqing, Beijing. Geological Bulletin of China, 36(8): 1319-1329.
Citation: HE Jinrui, JIAO Runcheng, NAN Yun, HAO Chunyan, ZHANG Lingling, RAN Shuhong, SONG Qingwei, ZHANG Yichao, ZHAO Danning, CHENG Suzhen. 2017: A discussion on Tuchenzi fossils and paleoclimate sedimentary environment in Qianjiadian basin of Yanqing County:Suspected dinosaur bones discovered for the first time in Yanqing, Beijing. Geological Bulletin of China, 36(8): 1319-1329.

北京延庆千家店盆地土城子组古生物化石及古气候沉积环境——延庆地区首次发现疑似恐龙骨骼化石

基金项目: 

中国地质调查局项目《华北地区重要地质遗迹调查(北京)》 1212011220044

北京市国土局项目《北京市地质遗迹详查评价及保护对策研究》 0747-1361SITCN217

北京市地质矿产勘查开发局项目《北京市延庆县千家店盆地土城子组孢粉组合特征研究》 京地[2015]148号

详细信息
    作者简介:

    贺瑾瑞(1984-), 男, 硕士, 工程师, 从事区域地质调查及地质遗迹调查。E-mail:laurry@qq.com

  • 中图分类号: Q915.2

A discussion on Tuchenzi fossils and paleoclimate sedimentary environment in Qianjiadian basin of Yanqing County:Suspected dinosaur bones discovered for the first time in Yanqing, Beijing

  • 摘要:

    延庆千家店盆地土城子组底部不整合接触蓟县系雾迷山组,不见顶,主要分为3个岩性段,一段以复成分砾岩、砂砾岩为主;二段以紫红色、黑色薄层泥页岩和泥质粉砂岩为主;三段以复成分砾岩、含砾粗砂岩为主。前人在该盆地二段地层中发现大量动植物化石,有双壳类、叶肢介、昆虫、木化石、恐龙足迹等,但一直没有介形类、孢粉及恐龙化石的相关报道。在化石层位发现疑似"恐龙骨骼"化石,丰富了该区化石种类。通过LA-ICP-MS测年,得出一段底部年龄为157.62±0.69Ma;二段中上部年龄为157.13±0.96Ma。分析认为,千家店盆地土城子组主体沉积时代为晚侏罗世早期,在前人研究的基础上,通过多样的古生物化石来探讨该盆地古气候背景及沉积环境。

    Abstract:

    The Tuchengzi Formation in Qianjiadian Basin of Yanqing County is composed of three lithologic members:the first member mainly consists of polymictic gravel and glutenite, the second member mainly consists of purplish red shale and argillaceous sandstone, and the third member mainly consists of compound gravel and gravel-bearing grit sandstone. A lot of fossils found in the second member have been reported, such as bivalves, conchostracans, Palaeontologists, plant fossils and dinosaur footprint. Neverthe-less, no relevant reports on the fossils of ostracods, sporopollen and dinosaur bones are found. In this study, the suspected dinosaur bone fossils were discovered for the first time in the second member of the Tuchengzi Formation in Qianjiadian Basin of Yanqing County, and LA-ICP-MS zircon U-Pb dating of the argillaceous sandstone was carried out. According to the age values of the low-er part of the first member (15.762±0.69Ma, ) and the upper part of the second member (157.13±0.96Ma), the formation age of the Tuchengzi should be early Late Jurassic. On the basis of previous studies, the ancient climate and sedimentary environment of the Qianjiadian basin are discussed.

  • 致谢: 感谢北京市地质研究所杨鸿连教授的关心和指导,感谢华北地区重要地质遗迹调查项目和北京市地质遗迹详查评价及保护对策研究项目组成员的大力支持。
  • 图  1   研究区地质简图

    Figure  1.   Geological sketch map of the study area

    图  2   延庆千家店盆地土城子组实测剖面

    1—复成分砾岩;2—砂砾岩;3—凝灰质砂岩;4—凝灰质粉砂岩;5—流纹质角砾凝灰岩;6—粉砂岩;7—角砾凝灰岩;8—安山质角砾熔岩;9—沙质页岩;10—页岩;11—含粗质砂岩;12—白云岩;J3tc1—土城子组一段;J3tc2—土城子组二段;J3tc3—土城子组三段;Jxw—迷雾山组

    Figure  2.   Measured section of Tuchengzi s trata in Qianjiadian basin, Yanqing County

    图  3   疑似“恐龙骨骼”

    Figure  3.   Suspected"dinosaur bones"

    图  4   N1样品中锆石阴极发光(CL)照片(30颗)

    Figure  4.   CL images of zircons of N1 sample

    图  5   N1样品LA-ICP-MS锆石U-Pb谐和图

    Figure  5.   Zircon U-Pb concordia curve for N1 sample by LA-ICP-MS

    图  6   N2样品中锆石阴极发光(CL)图像

    Figure  6.   CL images of zircons of N2 sample

    图  7   N2样品LA-ICP-MS锆石U-Pb谐和图

    Figure  7.   Zircon U-Pb concordia curve for N2 samples by LA-ICP-MS

    表  1   土城子组划分沿革

    Table  1   Division of Tuchengzi Formation

    命名单位/个人林朝棨[7]长春地院[7]陈晋镳等[8]北京地质学院《华北地区区域地层表·北京分册》[9]《北京市区域地质志》[10]萧宗正等[11]《北京市岩石地层》[1]
    20世纪20—30年代承德1942年辽西1957年辽西1959年冀北赤城1961年1977年北京1991年北京1994年北京1996年北京
    “承德砾岩”或“土城子砾岩”土城子砾岩层正式称为“土城子组”后城组后城组后城组后城组后城组土城子组
    下载: 导出CSV

    表  2   N1样品测试结果

    Table  2   Dating age of N1 Sample

    测点号含量/10-6同位素比值年龄/Ma
    PbU232th/238U206Pb/238Uerr%207Pb/235Uerr%207Pb/206Pberr%206Pb/238U
    12700.89900.00200.02500.00031.320.16960.00955.620.04910.00265.211592
    22570.63030.00130.02500.00031.200.17030.01257.360.04950.00387.671592
    3*153690.52150.00260.03630.00041.080.32520.00471.430.06500.00091.452302
    4*71690.50430.00250.03670.00041.080.28390.00541.900.05620.00111.872323
    52680.54680.00050.02470.00031.160.16740.01016.010.04910.00306.061572
    62660.68130.00120.02470.00031.110.16790.00573.380.04930.00163.281572
    7113640.62810.00450.02480.00031.040.16730.00331.950.04890.00101.991582
    893340.48610.00270.02450.00031.110.16730.00291.740.04960.00081.621562
    951371.43260.00300.02470.00031.090.16680.00382.250.04900.00112.151572
    10113101.55380.01380.02490.00031.030.16960.00301.780.04930.00081.671592
    1151701.14010.00750.02470.00031.050.16770.00583.430.04920.00173.411572
    1272610.81970.00080.02430.00031.060.16620.00422.500.04950.00122.331552
    1362040.79110.00180.02460.00031.110.16740.00392.320.04940.00102.121572
    1441291.55530.00280.02500.00031.150.16800.00814.830.04870.00224.511592
    1561821.16960.01620.02460.00031.060.16800.00442.610.04940.00122.491572
    16133471.98910.00680.02460.00031.050.16780.00301.780.04950.00081.701572
    172790.64180.00190.02480.00031.110.16670.00965.730.04880.00285.721582
    183851.25510.00180.02480.00031.110.16670.00965.780.04870.00285.831582
    19*162971.37450.00360.03240.00031.040.91430.01992.180.20450.00391.912062
    2051940.76170.00700.02460.00031.070.16860.00422.520.04970.00122.511572
    2182441.11760.00160.02500.00031.200.16930.00492.880.04910.00112.311592
    222580.55220.00150.02500.00031.150.17060.00985.770.04950.00285.741592
    23*162130.44170.00190.06240.00081.271.36120.02061.520.15830.00231.433905
    24*4951.33330.00640.02960.00031.080.24460.01365.570.05980.00335.561882
    252820.61530.00260.02470.00031.130.16800.01096.500.04940.00326.571572
    2682850.61860.00110.02510.00031.030.16940.00422.450.04900.00112.301602
    27*174360.52910.00250.03580.00041.050.27640.00401.430.05600.00071.292272
    2871892.07710.00360.02460.00031.030.16710.00412.460.04930.00112.331562
    292670.67750.00130.02440.00031.140.16650.01468.770.04940.00438.681562
    3061950.64440.00210.02500.00031.050.16830.00362.110.04880.00102.111592
    注:带“∗”的点号为计算年龄加权平均值时剔除的数据
    下载: 导出CSV

    表  3   N2样品测试结果

    Table  3   Dating age of N2 sample

    测点号含量/10-6同位素比值年龄/Ma
    PbU232th/238U206Pb/238Uerr%207Pb/235Uerr%207Pb/206Pberr%206Pb/238U
    11340.9670570.0057940.02450.00052.030.16610.020712.470.04910.033668.391563
    272011.9256750.0085290.02470.00031.090.16740.00472.820.04920.00142.881572
    3*2560.654990.0015940.03070.00041.240.81410.02673.280.19220.00643.351952
    451771.1607890.0061690.02470.00031.100.16750.00422.510.04910.00122.451572
    52650.9273980.0018310.02430.00031.200.16490.01287.730.04920.00398.011552
    61350.6092410.0030390.02510.00031.260.16810.01227.260.04860.00357.291602
    761671.515350.0019180.02490.00031.090.16800.00462.720.04900.00122.401582
    81430.5986740.0036910.02500.00031.240.16810.01287.620.04880.00387.821592
    941240.6276450.0069580.02500.00031.100.16700.00482.900.04850.00142.971592
    101270.9867610.0055330.02400.00031.270.16870.01076.320.05100.00336.461532
    112711.1451020.004380.02480.00031.080.16870.00784.630.04930.00234.601582
    121400.9183180.0027880.02460.00031.300.16730.01106.580.04930.00326.491572
    1331150.5685350.0016790.02440.00031.100.16730.00724.300.04980.00214.291552
    14*243973.7544630.0415150.03030.00031.010.69690.01211.740.16710.00251.501922
    1541590.7956780.0058630.02460.00031.030.16520.00764.580.04870.00224.511572
    1641251.2474240.0051110.02480.00031.120.16620.01348.090.04860.00398.111582
    1751660.9305410.0114970.02480.00031.040.16590.00523.130.04850.00153.091582
    18*132011.2855830.0026340.03550.00041.041.55160.02281.470.31710.00411.302252
    注:带“∗”的点号为计算年龄加权平均值时剔除的数据
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-12-30
  • 修回日期:  2017-03-14
  • 网络出版日期:  2023-08-15
  • 刊出日期:  2017-07-31

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