江汉盆地新构造运动对第四纪沉积环境演化的制约

杨青雄; 田望学; 李启文; 孔令耀

江汉盆地新构造运动对第四纪沉积环境演化的制约

湖北省地质调查院, 武汉 430034

基金项目:

中国地质调查局地质调查项目 12120113012800

详细信息

作者简介:
杨青雄(1982-), 男, 工程师, 主要从事基础地质调查工作。E-mail:smileyangqx@163.com

中图分类号: P546;P534.63
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出版历程
- 收稿日期: 2016-04-22
- 刊出日期: 2016-09-01

THE NEOTECTONIC RESTRICTS TO QUATERNARY DEPOSITION ENVIRONMENT EVOLUTION OF JIANGHAN BASIN

Geological Survey of Hubei Province, Wuhan 430034, China

摘要

摘要: 以江汉盆地周缘区露头剖面及沉积中心区第四纪钻孔岩芯资料为研究载体，通过第四纪地层横向对比分析，恢复了江汉盆地第四纪各时期的沉积环境，讨论了江汉盆地新构造运动的特点及对江汉平原第四纪沉积环境演化的控制作用。研究表明，早中更新世江汉盆地大部处于掀升状态，盆地周缘地带遭受剥蚀；晚更新世地壳显现不等量运动，盆地自北西向中南部表现为徐缓掀升与下沉并存；全新世，盆地周缘及波状地形区掀升和低平原区强烈沉降进一步突显，全新世中晚期湖泊范围达到最大。
- 江汉盆地 /
- 新构造运动 /
- 第四纪 /
- 沉积环境
Abstract: Through the transverse contrast of Quaternary strata, combining with the data of outcrop profiles in periphery area of Jianghan Basin and Quaternary drilling cores in sedimentary central area, we restored the sedimentary environment of Jianghan Basin in different period of Quaternary, and discussed the neotectonic characteristics and its control functions to Quaternary sedimentary environment evolution. The result shows that most part of Jianghan Basin is in a lift condition in early and Middle Pleistocene, the periphery of the basin is in a state of erosion. The amount of crust exercise is unequal in late Pleistocene, from north west to south central the basin is slowly rising and sinking. In Holocene, rising in periphery of basin and undulating terrain and sinking in low plain area are more significant, and the area of the lake reached the maximum in middle and late Holocene.
- Jianghan Basin /
- neotectonics /
- Quaternary /
- sedimentary environment

HTML全文

图 1 湖北省江汉盆地构造区划及前人钻孔位置简图

1—江汉盆地沉积中心区；2—江汉盆地西缘露头区；3—江汉盆地东缘露头区；4—盆地基底；5—主要河流；6—地貌分区边界；7—省边界；8—地名；9—东西向钻孔位置及编号；10—南北向钻孔位置(自北向南编号依次为江1—江15)；11—钻孔位置连线

Figure 1. The tectonic division and previous drilling positions map of Jianghan basin in Hubei

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图 2 江汉平原东西向第四系岩相剖面图

1—砂砾层；2—中粗砂；3—细砂；4—粉砂；5—砂与粉质黏土、黏土质粉砂微薄互层；6—粉质黏土；7—黏土；8—淤泥及淤泥质土；9—斑状黏土与含钙黏土；10—岩性层界限；11—钻孔投影；12—基岩；13—下更新统东荆河组(Q_p¹d)；14—中更新统江汉组(Q_p²j)；15—上更新统沙湖组(Q_p³s)；16—全新统郭河组(Q_hg)

Figure 2. The Quaternary lithofacies profile (east to west) in Jianghan Basin

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图 3 江汉平原南北向第四系岩相剖面图

Figure 3. The Quaternary lithofacies profile (south to north) in Jianghan basin

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图 4 沙湖—湘阴断裂地下热水产出地质条件物探示意图^[20]

1—第四系全新统；2—白垩—新近系；3—二叠—三叠系；4—粉质黏土；5—砂；6—砂卵石；7—砂岩、泥质粉砂岩；8—灰岩；9—硅质岩；10—地下热水产出部位；11—断层；12—地下热水补排迳流方向；13—地下热水开采井(手压井)

Figure 4. The geophysical prospecting schematic of geological conditions of underground hot water in Shahu-Xiangyin Fault

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图 5 石首—朱河断裂物探地质剖面图^[20]

1-粉质黏土；2-砂；3-砂卵石；4-黏土粉砂；5-粉砂；6-网纹红土

Figure 5. The geophysical prospecting section of Shishou-Zhuhe Fault

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图 6 沙市—闸口断裂物探地质剖面图^[20]

1-粉质黏土；2-砂；3-砂卵石；4-黏土粉砂

Figure 6. The geophysical prospecting section of Shashi-Zhakou Fault

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表 1 江汉盆地第四纪地层序列

Table 1. The Quaternary stratigraphic sequence in Jianghan Basin

时代	江汉盆地西缘露头区	江汉盆地沉积中心区	江汉盆地东缘露头区
全新世	孙家河组Q_hs	郭河组Q_hg	走马岭组Q_hz
晚更新世	古老背组Q_p³g	沙湖组Q_p³s	下蜀组Q_p³x
中更新世	善溪窑组Q_p²s	江汉组Q_p²j	王家店组Q_p²w
早更新世	云池组Q_p¹y	东荆河组Q_p¹d	阳逻组Q_p¹y

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