邯郸市第四纪岩石地层与年代地层划分与对比

发布时间：2019-05-06 15:02

【摘要】：邯郸市地势西高东低,大致以京广铁路为界,东部地区为山前洪冲积平原,地势开阔平坦;西部为侵蚀剥蚀地形,山脉、丘陵、盆地相间,河谷辗转穿越,地表形态差异很大。根据地貌特征,以太行山山前断裂为界,目标区可分为两个主要地貌单元:断裂以西为太行山山地丘陵区,断裂以东为华北平原沉积区。根据邯郸市区钻孔岩性、沉积相、沉积旋回、沉积物粒度特征、14C、光释光、热释光测年数据和孢粉组合等资料,结合前人钻孔资料特征,确定了岩石地层和年代地层的划分依据和标志,绘制了单孔综合柱状图、连孔柱状对比图以及邯郸市区钻孔第四系综合柱状图,提出了详细的岩石地层和年代地层划分和对比方案。在岩石地层方面,邯郸市区第四系划分为更新统下部固安组(Qp1g)、更新统中部杨柳青组(Qp2y)、更新统上部欧庄组(Qp3o)和全新统(Qh)。研究表明,邯郸地区第四系地层的沉积由西到东逐渐变薄:根据南北向的钻孔廊带对比图,西部以冲洪积相为主,沉积物发育较薄;中东部以冲湖积、河流相为主。造成这种差异主要是由于邯郸地区地形及古地貌西高东低的原因。在年代地层方面,根据前人和本文获得的14C、光释光、热释光测年数据和孢粉组合等资料,按照目前新的第四纪地层划分方案和划分标准,较详细地讨论了目标区第四纪年代地层的划分和对比。其中,更新统未见底,更新统下部(固安组)顶界0.73Ma,更新统中部(杨柳青组)为0.73Ma-0.128Ma,更新统上部(欧庄组)为0.128Ma-0.01Ma,全新统为0.01Ma至今的沉积。
[Abstract]:The topography of Handan city is high in the west and low in the east, roughly bounded by the Beijing-Guangzhou railway, and open and flat in the east of the mountain as the front flood alluvial plain, while the west is eroded and denuded terrain, mountains, hills, basins interphase, river valleys tossing and traversing, and there are great differences in the shape of the earth's surface. According to the geomorphologic characteristics, the target area can be divided into two main geomorphologic units: the hilly area of the Taihang Mountains to the west of the fault and the sedimentary area of the North China Plain to the east of the fault. Based on drilling lithology, sedimentary facies, sedimentary cycle, sediment particle size characteristics, 14C, photoluminescence, thermoluminescence dating data and sporopollen assemblage data in Handan city, combined with the characteristics of previous drilling data, The classification basis and symbol of lithostratigraphy and chronostratigraphy are determined, and the single-hole comprehensive column chart, the continuous hole column-like correlation map and the Handan urban borehole Quaternary comprehensive column chart are drawn. Detailed lithostratigraphic and chronostratigraphic division and correlation schemes are proposed. In terms of lithostratigraphy, the Quaternary in Handan city is divided into the lower Gouan formation (Qp1g) of the Pleistocene, the Yangliuqing formation (Qp2y) of the central Pleistocene, the Qp3o of the upper Pleistocene and the (Qh). Of the Holocene. The results show that the deposition of Quaternary strata in Handan area gradually thinned from west to east: according to the contrast map of borehole corridor belt in north-south direction, the west is dominated by alluvial facies and the sediments are thin; the middle-eastern part is dominated by alluvial lacustrine and fluvial facies. This difference is mainly due to the Handan area topography and palaeogeomorphology west high east low reason. In chronostratigraphy, according to the data of 14C, photoluminescence, thermoluminescence dating and sporopollen assemblage obtained by predecessors and in this paper, according to the current new Quaternary stratigraphic classification scheme and standard, The division and correlation of Quaternary chronostratigraphy in the target area are discussed in detail. Among them, there is no bottom in the Pleistocene, 0.73 Ma in the lower part of the Pleistocene (Gu'an formation), 0.73 Ma in the middle part of the Pleistocene (Yangliuqing formation), 0.128 Ma in the upper Pleistocene (Ouzhuang formation) and 0.128 Ma in the upper part of the Pleistocene (Ouzhuang formation). The Holocene is the deposit of 0.01Ma to the present.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P534.63

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