Geological Age, Paleoclimate and Petroleum Geological Characteristics of the Upper Part of the Suowa Formation in the North Qiangtang Basin

Abstract

Abstract:

The upper part of the Suowa Formation in the central district of the North Qiangtang depression is the sediment during the latestage evolution of the Qiangtang basin, which deposits in tidal flatlagoonal environment. By strata correlation of the upper part of the Suowa Formation, it is found that its lithology is different in the eastern, western and southern areas, and the places where the oil shale exposed only aligned around the epicontinental restricted gulflagoon areas
e g. Shengli River area, Changshe Mountain area and Tuolamu area in the southern margins of the North Qiangtang basin. The deposition of the oil shale is obviously controlled by differential palaeotopography. Based on the fossil assemblages in the upper part of the Suowa Formation and its underlying strata, and combined with the Re-Os dating of the Shengli River oil shale, the geological age of the upper part of the Suowa Formation is suggested to be Early Cretaceous. The Cretaceous spores and pollen assemblages and silicified wood reveal that the climate during the early period of the upper part of the Suowa Formation was warm and humid, while the climate during the later period was hot and arid. Furthermore, the vertical changed climate may be not restricted to the Shengli River region, but the whole North Qiangtang basin. The discovery of the oil shalegypsum sedimentary associations is of important implications for our knowledge of the hydrocarbon accumulation and preservation of the Qiangtang basin during the late stage evolution.

Key words: geological age, palaeoclimate, palynological assemblage, the upper
part of the Suowa Formation, Early Cretaceous, Qiangtang basin

CENG Qing-Jiang, WANG Jian, CHEN Meng, FU Xiu-Gen, TUN Tao, XIONG Xin-Guo. Geological Age, Paleoclimate and Petroleum Geological Characteristics of the Upper Part of the Suowa Formation in the North Qiangtang Basin[J]. Geoscience, 2012, 26(1): 10-21.

References

［1］王希斌，鲍佩声，陈克樵. 西藏的蛇绿岩
[J]. 中国区域地质, 1987, 3(2): 248-256.
［2］伊海生, 林金辉, 赵兵, 等.藏北羌塘地区地层新资料
[J]. 地质论评, 2003, 49(1): 59-65.
［3］谭富文, 王剑, 李永铁, 等. 羌塘盆地侏罗纪末-早白垩世沉积特征与地层问题
[J].中国地质, 2004, 31(4): 400-405.
［4］王剑, 付修根, 李忠雄, 等. 藏北羌塘盆地胜利河—长蛇山油页岩带的发现及其意义
[J].地质通报, 2009, 28(6) : 691-695.
［7］付修根, 王剑, 汪正江, 等. 藏北羌塘盆地海相油页岩沉积环境
[J]. 新疆石油地质, 2007, 28(5): 529-533.
［8］付修根, 王剑, 汪正江, 等. 藏北羌塘盆地晚侏罗世海相油页岩生物标志物特征、沉积环境分析及意义
[J].地球化学, 2007, 36(5): 486-496.
［9］王剑, 付修根, 李忠雄, 等. 北羌塘盆地油页岩形成环境及其油气地质意义
[J]. 沉积与特提斯地质, 2010, 30(3): 11-17.
［10］吴滔, 熊兴国, 易成兴, 等. 北羌塘坳陷胜利河组膏岩沉积环境
[J]. 新疆石油地质, 2010, 31(4): 376-378.
［11］李亚林, 王成善, 伍新和, 等. 藏北托纳木地区发现上侏罗统海相油页岩
[J]. 地质通报, 2005, 24(8): 783-784.
［13］王剑, 付修根, 杜安道, 等. 羌塘盆地胜利河海相油页岩地球化学特征及ReOs定年
[J]. 海相油气地质, 2007, 12(3): 21-26.
［14］王剑, 谭富文, 李亚林, 等. 青藏高原重点沉积盆地油气资源潜力分析
[M]. 北京：地质出版社, 2004：44-47.
［15］王剑, 丁俊, 王成善, 等. 青藏高原油气资源战略选区调查与评价
[M]. 北京：地质出版社, 2010: 263.
［16］王成善, 伊海生, 刘池洋, 等. 西藏羌塘盆地古油藏发现及其意义
[J]. 石油与天然气地质, 2004, 25(2): 139-143.
［18］赵政璋, 李永铁, 叶和飞, 等. 青藏高原大地构造特征及盆地演化
[M]. 北京：科学技术出版社, 2000：208-220, 321-359.
［19］西藏自治区地质矿产局. 西藏自治区区域地质志\
[M\]. 北京: 地质出版社, 1993：100-188.
［20］尹福光, 潘桂棠, 李兴振, 等. 昆仑造山带中段蛇绿混杂岩的地质地球化学特征
[J]. 大地构造与成矿学, 2004,28(2): 194-200.
［21］尹福光. 羌塘盆地中央隆起性质与成因
[J]. 大地构造与成矿学, 2003, 27(2): 143- 146.
［22］方德庆, 梁定益. 北羌塘盆地中部上侏罗统研究新进展
[J]. 地层学杂志, 2000, 24(2): 163-167.
［23］汪正江, 王剑, 陈文西, 等. 青藏高原北羌塘盆地胜利河上侏罗统海相油页岩的发现
[J]. 地质通报，2007, 26(6):764-768.
［24］张玉修, 张开均, 李勇, 等. 西藏羌塘盆地东部中-上侏罗统沉积特征及沉积相划分
[J]. 大地构造与成矿学, 2007, 31(1): 52-62.
［25］白海生. 青海西南部海相侏罗纪地层新认识
[J]. 地质论评, 1989, 35(6): 529-536.
［26］阴家润. 青海南部奇异蚌动物群生态环境与时代探讨
[J]. 古生物学报, 1990, 29(3): 284-299.
［28］杨兢红, 蒋少涌, 凌洪飞, 等. 黑色页岩与大洋缺氧事件的ReOs同位素示踪与定年研究
[J]. 地学前缘, 2005, 12(2): 143-150.
［29］黎文本. 吉林安图县早白垩世屯田营组孢粉组合
[J]. 古生物学报, 2001, 40(4): 450-456.
［30］黄清华, 赵来时, 卢占武, 等. 内蒙古海拉尔盆地大磨拐河组孢粉化石及其时代浅析
[J]. 地质科技情报, 2006, 25(1): 19-26.
［31］吴炳伟, 雷安贵. 辽宁铁岭盆地早白垩世孢粉组合
[J]. 微体古生物学报, 2007, 24(1): 89-97.
［32］黎文本. 辽宁义县金家沟义县组砖城子层孢粉组合
[J]. 古生物学报, 2010, 49(1): 44-53.
［33］瓦赫拉梅耶夫 B A. 侏罗—白垩纪全球植物群及气候\
[M\]. 孙革，张志城，郑少林，译. 南京：南京大学出版社, 1991：35-54.
［34］辛存林, 孙柏年, 韦利杰, 等. 甘肃窑街中侏罗世孢粉组合及其古环境意义
[J]. 兰州大学学报：自然科学版, 2006, 42(3): 8-13.
［38］黎文本. 塔里木盆地北部早白垩世孢粉组合
[J]. 古生物学报, 2000, 39(1): 28-45.
［39］朱丽霞.羌塘盆地胜利河—托拉木地区早白垩世沉积环境及石油地质意义
[D]. 北京：中国地质科学院, 2011：46-53.
［40］黄清华, 杨建国, 孔惠. 东北依兰—伊通地堑方正断陷方正组的建立及其意义
[J]. 地层学杂志, 2003, 27(2): 138-145.
［41］张清波, 常英. 北京地区大灰厂组孢粉组合及其地质意义
[J]. 北京地质, 1994(2):1-7.
［42］谭富文, 王剑, 王小龙, 等. 藏北羌塘盆地上侏罗统中硅化木的发现及意义
[J]. 地质通报, 2003, 22(11/12): 956-958.
［43］尹凤娟, 侯宏伟. 陕西彬县地区中侏罗世延安组孢粉植物群及其意义
[J]. 植物学报, 1999, 41(3): 325-329.
［44］黄嫔, 管永明, 杨晓清. 江苏句容深层早侏罗世孢粉植物群的发现
[J]. 微体古生物学报, 2000, 17(1): 85-98.
［45］黄嫔, 张光富. 吉林延边智新盆地大拉子组孢粉组合
[J]. 微体古生物学报, 2002, 19(3): 263-275.
［47］赵海滨, 尹志刚, 万晓樵, 等. 据孢粉分析黑龙江嘉荫地区晚白垩世气候变化对恐龙绝灭的影响
[J]. 现代地质, 2006, 20(2): 216-224.
［48］崔莹, 席党鹏, 万晓樵. 大庆油田徐22井青山口组/姚家组微体生物及其古气候响应
[J]. 现代地质, 2007, 21(3): 484-490.
［50］张望平. Dicheiropollis 在云南富民盆地安宁组孢粉组合中的出现及其意义
[J]. 微体古生物学报, 1995, 12(1): 39-49.

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