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基金项目:中国地质调查局项目“长江三角洲三维深部地质调查”(1212011220252),中国地质调查局项目“苏南现代化建设示范区1∶5万环境地质调查”(DD20160245)资助
作者单位
苗巧银, 姜丽, 黄顺生 江苏省地质调查研究院 
摘要:
      青藏高原隆升的研究多集中在高原内部及周边,对其他地域的研究鲜有报道。苏北盆地ZKJ30、ZKJ32、ZKJ43等钻孔样品的微量元素Be、Ga、Cr和常量元素Fe及氧化物Al2O3、MgO、Fe2O3、TiO2、Na2O、CaO、P2O5等在早、中更新世不同深度段呈现较明显的含量拐点变化,含量逐渐增加且存在旋回性等变化特征,反映早、中更新世气候与沉积环境发生了根本性的变化,进而响应于青藏高原早、中更新世阶段性隆升。由于印度板块和欧亚板块碰撞的内在动力,青藏高原隆升的同时苏北盆地拗陷并沉积成平原,这种大范围的西部造山、东部成盆现象,符合盆山耦合关系,推知苏北平原及高邮凹陷的形成均与青藏高原的隆升存在一定的响应及因果关系。
关键词:化学元素含量  青藏高原隆升  盆山耦合关系  早、中更新世  苏北盆地
Abstract:
      The study on the uplift of the Qinghai-Tibet Plateau emphasized areas in and surrounding the plateau, which is seldom reported in other areas. This paper selects the trace elements including Be, Ga, Cr, macro-element of Fe and oxide including Al2O3, MgO, Fe2O3, TiO2, Na2O, CaO and P2O5 in drilling holes of ZKJ43, ZKJ32 and ZKJ30 of the Northern Jiangsu Basin and studies their obvious changes of content turning points and their features of increasing content and cyclicity in the different depths of the Early and Middle Pleistocene strata. The result reveals a fundamental change of the climate and sedimentary environment in the Early and Middle Pleistocene period, which corresponds to the sessional uplift of the Qinghai-Tibet Plateau of the same time. The internal dynamics of the Indian and Eurasian plates colliding contributed to the uplift of the Qinghai-Tibet Plateau. Meanwhile, the Northern Jiangsu Basin sunk and deposited into a plain. This large range of western orogeny and eastern basin formation conforms to the basin-mountain coupling relationship, which suggests that the formation of the Northern Jiangsu Plain and the Gaoyou Sag has a certain responsive and causal relationship with the uplift of the Qinghai-Tibet plateau.
Keywords:chemical element content  uplift of the Tibetan Plateau  basin-mountain coupling  Early and Middle Pleistocene  Northern Jiangsu Basin
苗巧银, 姜丽, 黄顺生.苏北盆地早、中更新世地球化学元素变化特征与青藏高原隆升响应[J].地质学刊,2018,42(2):206-215