| 天山志留纪生物地理特征及分区 |
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| 引用本文： | 王宝瑜.天山志留纪生物地理特征及分区[J].新疆地质,1993(1). |
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| 作者姓名： | 王宝瑜 |
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| 作者单位： | 新疆维吾尔自治区地质矿产局地质矿产研究所 |
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| 基金项目： | 国家自然科学基金资助(9487001) |
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| 摘 要： | 天山志留纪生物丰富,包括笔石、珊瑚、腕足类、层孔虫等10多个门类,由于伊塞克—伊犁板块的阻隔和尼古拉耶夫—图拉苏断裂带的影响,天山南北具有两种不同的古地理环境。根据生物组合和沉积相特征,将天山归入古亚洲域,并细分为2个省,3个亚省:I_1准噶尔—哈萨克斯坦省,包括博罗科努山、那拉提山、北山、西准噶尔和哈萨克斯坦;I_1~1西准噶尔—北天山亚省,包括早志留世笔石相碎屑岩,中志留世珊瑚、腕足相碳酸盐岩和晚志留世杂色碎屑岩夹碳酸盐岩,局部含少量珊瑚腕足类;I_2南天山省,包括新疆南天山和原苏联南天山和中亚;I_2~1土尔克斯坦—哈尔克山亚省,包含早志留世碎屑岩和碳酸盐岩,局部含笔石,中晚志留世碳酸盐岩和碎屑岩,含丰富的珊瑚、腕足类、层孔虫,常形成珊瑚-层孔虫礁,火山岩不发育。I_2~2努腊套—费尔干纳亚省。整个志留纪为笔石相砂页岩沉积,火山活动微弱。
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| 关 键 词： | 天山 志留纪 古生物地理特征 生物省 |
SILURIAN PALEOBIOGEOGRAPHICAL FEATURES AND DIVISIONS IN TIAN-SHAN |
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| Wang Baoyu.SILURIAN PALEOBIOGEOGRAPHICAL FEATURES AND DIVISIONS IN TIAN-SHAN[J].Xinjiang Geology,1993(1). |
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| Authors: | Wang Baoyu |
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| Abstract: | The Silurian biota in Tianshan are particularly abundant, including graptolite,corals, brachiopods, stromatoporida and so on. As a result of separation of Yisaike-Ili plate and the effect of Nigulaev-Tulasu fault zone,the southern and northern parts of Tianshan have two distinctively different paleobiogeographic enviromments and features. Based on fossil assemblages and sedimentary facies,the Tianshan is incorporated into paleo-Asia realm,and is further subdivided into two provinces and three subprovinces. They are : I 1. Junggar-Kazakstan province, including Borohoro Mt. ,Nalati Mt. ,Beishan,West Junggar and Kazakstan region; I 11. West Junggar-North Tianshan subprovince,consisting of clastic rocks bearing graptolite of early Silurian,carbonate rocks bearing coral and brachiopods of middle Silurian and variegated clastic rocks bearing a few coral and brachiopods of late Silurian; I 2. South Tianshan province,containing Southern Tianshan in Xinjiang and South Tianshan and Mid-Asia in former USSR; I 21. Tuerkestan-Haerke sub-province, consisting of clastic and carbo-nate rocks bearing graptolite of early Silurian,and carbonate and clastic rocks bearing abundant corals,brachiopods,stromatoporida and coral-stromato-porid reef of middle and late Silurian; I 22. Nulatau-Fierganna subprovince, consisting of sandstones and shales bearing graptolite of whole Silurian. |
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| Keywords: | Tianshan Silurian paleobiogeographical features biologic province |
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