| 柴达木盆地西缘阿尔金山南坡上干柴沟组大古植物化石的发现及其地质意义 |
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| 引用本文： | 仲新. 柴达木盆地西缘阿尔金山南坡上干柴沟组大古植物化石的发现及其地质意义[J]. 甘肃地质, 2007, 16(4): 26-30 |
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| 作者姓名： | 仲新 |
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| 作者单位： | 甘肃省地矿局第三地勘院 甘肃兰州730050 |
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| 摘 要： | 阿尔金南坡干柴沟地区上干柴沟组新发现Podagonium-Quercus大古植物化石组合,该组合指示上干柴沟组中下部地层的时代为新近纪中新世,与我国华北板块、华南板块和青海乌兰、泽库等地区比较,显示出低分异度和低丰度的特点。从该植物组合相伴产出的Austrocypris分析,表明该地区纬向气候带属高温少雨、干湿交替的疏林草原环境,有利于柴西陆相成油盆地主力油源层的发育。
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| 关 键 词： | 大古植物 中新世 阿尔金 柴达木盆地 |
| 文章编号： | 1004-4116（2007）04-0026-0005 |
| 收稿时间： | 2007-10-23 |
DISCOVERY OF PLANT FOSSILS OF SHANGGANCHAIGOUFORMATION IN SOUTH SLOPE OF ARKIN MOUNTAIN IN QAIDAMBASIN AND THEIR GEOLOGICAL SIGNIFICANCE |
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| ZHONG Xin. DISCOVERY OF PLANT FOSSILS OF SHANGGANCHAIGOUFORMATION IN SOUTH SLOPE OF ARKIN MOUNTAIN IN QAIDAMBASIN AND THEIR GEOLOGICAL SIGNIFICANCE[J]. Acta Geologica Gansu, 2007, 16(4): 26-30 |
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| Authors: | ZHONG Xin |
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| Affiliation: | ZHONG Xin(No.3 Geology and Mineral Exploration Team,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Lanzhou 730050,China) |
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| Abstract: | Within the Shanchaigou Formation in the south slope of Arkin Basin has been discovered plant fossil assemblage of Podagonium-Quercus,which indicate that the age of middle-lower layer of ShangChaigou Formation is Miocene of Neogene Period.It is characterized by lower differential degree and abundance by comparison with North China Plate,South China Plate,Wulan and Zeku region of Qinghai in China.The analysis of Austrocypris associated with these plant assemblage show that this area was the veld environment with rare rain,alternation of drought and moisture in latitudinal climate zone,where is favorable for development of main oil source bed in continental face oil forming basin of west Qaidam Basin. |
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| Keywords: | plant fossils Miocene Arkin Qaidam Basin |
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