弥河下游河道变化与沉积环境分析
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摘要
在综合前人研究结果的基础上,重绘了莱州湾古河道,结合弥河下游四个柱状样,分析了弥河下游沉积环境。通过ZK305、Hsh15沉积相分析了弥河下游沉积环境的演变过程;对Lz908粒度组分与粒度参数分析,结合C-M图对弥河下游沉积动力变化进行了分析;通过BH2粒度组分与粒度参数变化,分析了弥河下游潮间带的沉积特征。研究结果发现,弥河下游沉积环境经历了由稳定的陆域沉积环境到动荡的海陆交互沉积环境的变化过程。弥河在晚更新世与全新世河道摆动形成了弥河洪冲积扇,是现代弥河下游沉积物的来源。同时,历史时期古河道在钻孔柱状样中均有一定的反应。现代弥河下游沉积物粒度组分多以砂质和粉砂质为主,反映了现代物质的搬运能力较强的特点。
On the basis of the comprehensive research results of the predecessors, the paleochannel of Laizhou Bay was redrawn, and the four columns in the lower reaches of the Mihe River were combined to analyze the sedimentary environment in the lower reaches of the Mihe River. The evolution process of the sedimentary environment in the lower reaches of the Mihe River was analyzed by ZK305 and Hsh15 sedimentary facies. The analysis of the particle size and particle size parameters of Lz908 and the C-M map were used to analyze the variation of sedimentary dynamics in the lower reaches of the Mihe River. The sedimentary characteristics of the intertidal zone in the lower reaches of the Mihe River were analyzed. The study found that the sedimentary environment in the lower reaches of the Mihe River experienced a process of changing from a stable land-based sedimentary environment to a turbulent sea-land interaction sedimentary environment. The Mihe River formed a floodplain of the Mihe River in the late Pleistocene and Holocene rivers, which is the source of sediments in the lower reaches of the modern Mihe. At the same time, the ancient river channel in the historical period has a certain reaction in the borehole column. The grain size components of sediments in the lower reaches of modern Mihe River are mainly sandy and silty, reflecting the strong handling capacity of modern materials.
On the basis of the comprehensive research results of the predecessors, the paleochannel of Laizhou Bay was redrawn, and the four columns in the lower reaches of the Mihe River were combined to analyze the sedimentary environment in the lower reaches of the Mihe River. The evolution process of the sedimentary environment in the lower reaches of the Mihe River was analyzed by ZK305 and Hsh15 sedimentary facies. The analysis of the particle size and particle size parameters of Lz908 and the C-M map were used to analyze the variation of sedimentary dynamics in the lower reaches of the Mihe River. The sedimentary characteristics of the intertidal zone in the lower reaches of the Mihe River were analyzed. The study found that the sedimentary environment in the lower reaches of the Mihe River experienced a process of changing from a stable land-based sedimentary environment to a turbulent sea-land interaction sedimentary environment. The Mihe River formed a floodplain of the Mihe River in the late Pleistocene and Holocene rivers, which is the source of sediments in the lower reaches of the modern Mihe. At the same time, the ancient river channel in the historical period has a certain reaction in the borehole column. The grain size components of sediments in the lower reaches of modern Mihe River are mainly sandy and silty, reflecting the strong handling capacity of modern materials.
引文
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[24]李琰,于洪军,易亮,等.渤海南部Lz908孔海陆交互沉积的粒度特征及其对沉积环境的指示[J].海洋科学, 2014(5):107-113.
[25]PASSEGA R. Grain size representation by CM patterns as a geologic tool[J]. Journal of Sedimentary Research, 1964(4):830-847.
[2]ZHANG J. On the critical issues of land-ocean interactions in the coastal zones[J]. Chinese Science Bulletin, 2011,56(24):1956-1966.
[3]KREMER H. River catchment-coastal sea interaction and human dimensions[J]. Regional Environmental Change, 2004,4(1):1-4.
[4]丁东.莱州湾南岸第四纪地层与海岸线[J].海洋地质与第四纪地质, 1987, 7(S):29-38.
[5]薛春汀. 7000年来渤海西岸南岸海岸线变迁[J].地理科学,2009, 29(2):217-222.
[6]国际地质对比计划第200号项目中国工作组.中国海平面变化[M].北京:海洋出版社, 1986:98-105.
[7]韩有松,孟广兰,王少青.渤海莱州湾滨海平原晚第四纪地质事件与古环境[J].海洋科学集刊, 1994(1):87-96.
[8]韩美,李道高,赵明华,等.莱州湾南岸平原地面古河道研究[J].地理科学, 1999(5):451-456.
[9]李道高,赵明华,韩美,等.莱州湾南岸平原浅埋古河道带研究[J].海洋地质与第四纪地质, 2000(1):23-29.
[10]薛春汀,丁东.渤海莱州湾南岸潍河-弥河三角洲:沉积序列和沉积格架[J].地理科学, 2008(5):672-676.
[11]孟庆海,韩美,赵明华,等.弥河冲洪积扇和古河道初步研究[J].山东师大学报(自然科学版), 1999(1):47-51.
[12]郦道元.水经注[M].北京:商务印书馆, 1958:150-160.
[13]山东省寿光县地方史志编纂委员会.寿光县志[M].上海:中国大百科全书出版社上海分社, 1992:95-96.
[14]李道高,韩美,赵明华,等.渤海莱州湾南岸平原浅埋古河道带及其与海(咸)水入侵关系研究[J].海洋学报(中文版), 1999(6):64-71.
[15]LI T, LI T J. Sediment transport processes in the Pearl River Estuary as revealed by grain-size end-member modeling and sediment trend analysis[J]. Geo-Marine Letters, 2018, 38(2):167-178.
[16]尉建功,冯秀丽,林霖,等.秦皇岛附近海域表层沉积物粒度分布特征及运移趋势分析[J].中国海洋大学学报:自然科学版,2013, 43(7):66-71.
[17]MCLAREN P. An interpretation of trends in grain size measures[J]. Journal of Sedimentary Petrology, 1981, 51:611-624.
[18]王庆,王小鲁,李雪艳,等.黄河三角洲南部废弃三角洲潮间滩涂表层沉积粒度特征及其粗化现象[J].第四纪研究, 2017,37(2):353-367.
[19]SAHU B K. Depositional mechanism from the size analysis of classic sediments[J]. Journal of Sediment Research, 1964,34(1):73-83.
[20]YI L, DENG C, XU X, et al. Paleo-megalake termination in the Quaternary:Paleomagnetic and water-level evidence from south Bohai Sea, China[J]. Sedimentary Geology, 2015(1):1-12.
[21]喻薛凝,战庆,王张华.长江口各地貌单元沉积构造和粒度分区特征[J].海洋地质与第四纪地质, 2016, 36(4):1-11.
[22]王旭,张戈.盘锦港海底表层沉积物粒度特征及沉积环境分析[J].海洋开发与管理, 2017, 34(7):75-79.
[23]吕文哲.海岸带至深海典型海洋沉积物粒度特征研究[D].青岛:国家海洋局第一海洋研究所, 2017.
[24]李琰,于洪军,易亮,等.渤海南部Lz908孔海陆交互沉积的粒度特征及其对沉积环境的指示[J].海洋科学, 2014(5):107-113.
[25]PASSEGA R. Grain size representation by CM patterns as a geologic tool[J]. Journal of Sedimentary Research, 1964(4):830-847.