山东半岛南部近岸海域碎屑矿物对中小河流的物源响应
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摘要
对山东半岛南部近岸海域的106个表层沉积物样品及大沽河、五龙河和乳山河的94个表层沉积物样品进行碎屑矿物分析,系统地研究了碎屑矿物的分布特征及物源指示。研究区共鉴定出40种重矿物和13种轻矿物,重矿物以普通角闪石、绿帘石、黑云母和自生黄铁矿为主,轻矿物以石英、斜长石、钾长石和风化云母为主。根据碎屑矿物组合特征,将研究区分为4个矿物区:Ⅰ区为胶州湾口至崂山头的附近海域;Ⅱ_1亚区为丁字湾和鳌山湾附近水深约15m以浅的海域,Ⅱ_2亚区为研究区东南部水深>20m的远岸区;Ⅲ区处于Ⅱ区和Ⅳ区的过渡带;Ⅳ区为乳山口西南部近岸海域。Ⅰ区和Ⅱ区的矿物组合均为普通角闪石-绿帘石-石英-长石,Ⅰ区和Ⅱ_1亚区受大沽河、五龙河和乳山河输入的物质及沿岸基岩、岛屿风化碎屑的影响较大,Ⅱ_2亚区主要为晚更新世低海平面时形成的陆架残留沉积。Ⅲ区矿物组合为普通角闪石-石英-长石-片状矿物,Ⅳ区矿物组合为云母类-自生黄铁矿-普通角闪石-石英,Ⅲ区、Ⅳ区物源多样,黄河物质对两区贡献显著。
106 surface sediment samples from the coastal waters off the southern Shandong Peninsula plus 94 samples from the Dagu,Wulong and Rushan Rivers are collected and analyzed for detrital minerals.The distribution pattern and provenances of the detrital minerals are systematically studied and a total of 40 heavy minerals and 13 light minerals recognized.Heavy minerals are dominated by hornblende,epidote,biotite and authigenic pyrite,whereas light minerals consist mainly of quartz,plagioclase,potassium feldspar and weathered mica.There are four mineral zones in the study area.The Zone Ⅰ is the offshore area from Jiaozhou Bay mouth to Lushantou.The Zone Ⅱ may be further divided into 2 sub-areas.The Zone Ⅱ_1 is a shallow water area near the T-Shaped Bay and Aoshan Bay about 15 mdeep.The Ⅱ_2 is far in the southeast of the study area in a water depth of more than 20 m.The Zone Ⅲ is in the transitional zone between Zone Ⅱ and Ⅳ.The Zone Ⅳ is the coastal water in the southwestern part of Rushankou.The mineral assemblage of Zone I and Zone Ⅱ is commonly consisting of hornblende,epidote,quartz and feldspar.The Zone Ⅰ and the Sub-zone Ⅱ_1 are greatly affected by the materials from the Dagu,Wulong and Rushan Rivers,as well as the coastal bedrock and island weathering debris.The Sub-zone Ⅱ_2 is mainly covered by the shelf relict sediments deposited during the Late Pleistocene low sea level.The mineral assemblage in the Zone Ⅲ is dominated by hornblende,quartz,feldspar and flaky minerals.The mineral assemblage in the Zone Ⅳ is dominated by flaky minerals,authigenic pyrite,hornblende and quartz.The material sources of the Zones Ⅲ and Ⅳ are diverse,and the Yellow River contributes significantly.
106 surface sediment samples from the coastal waters off the southern Shandong Peninsula plus 94 samples from the Dagu,Wulong and Rushan Rivers are collected and analyzed for detrital minerals.The distribution pattern and provenances of the detrital minerals are systematically studied and a total of 40 heavy minerals and 13 light minerals recognized.Heavy minerals are dominated by hornblende,epidote,biotite and authigenic pyrite,whereas light minerals consist mainly of quartz,plagioclase,potassium feldspar and weathered mica.There are four mineral zones in the study area.The Zone Ⅰ is the offshore area from Jiaozhou Bay mouth to Lushantou.The Zone Ⅱ may be further divided into 2 sub-areas.The Zone Ⅱ_1 is a shallow water area near the T-Shaped Bay and Aoshan Bay about 15 mdeep.The Ⅱ_2 is far in the southeast of the study area in a water depth of more than 20 m.The Zone Ⅲ is in the transitional zone between Zone Ⅱ and Ⅳ.The Zone Ⅳ is the coastal water in the southwestern part of Rushankou.The mineral assemblage of Zone I and Zone Ⅱ is commonly consisting of hornblende,epidote,quartz and feldspar.The Zone Ⅰ and the Sub-zone Ⅱ_1 are greatly affected by the materials from the Dagu,Wulong and Rushan Rivers,as well as the coastal bedrock and island weathering debris.The Sub-zone Ⅱ_2 is mainly covered by the shelf relict sediments deposited during the Late Pleistocene low sea level.The mineral assemblage in the Zone Ⅲ is dominated by hornblende,quartz,feldspar and flaky minerals.The mineral assemblage in the Zone Ⅳ is dominated by flaky minerals,authigenic pyrite,hornblende and quartz.The material sources of the Zones Ⅲ and Ⅳ are diverse,and the Yellow River contributes significantly.
引文
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[17]乔淑卿,石学法,王国庆,等.渤海底质沉积物粒度特征及输运趋势探讨[J].海洋学报(中文版),2010,32(4):139-147.
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[19]邓凯,杨守业,王中波,等.台湾山溪性小河流碎屑重矿物组成及其示踪意义[J].沉积学报,2016,34(3):531-542.
[20]颜彬,谢敬谦,黄博,等.广东近岸海域矿物特征指数分布及指示意义[J].海洋地质前沿,2017,33(11):1-8.
[21]董江,李安春,徐方建,等.东海内陆架EC2005孔重矿物组合特征及其物源指示意义[J].海洋与湖沼,2015,46(6):1292-1303.
[22]张永明,毕建强,孙圣堂,等.青岛崂山头海域海底滑坡的声波探测[J].工程地球物理学报,2012,9(2):170-174.
[23]赵广涛,王德滋,曹钦臣,等.I-A型复合花岗岩体的热演化及其意义——以崂山花岗岩体为例[J].中国科学:地球科学,1998,28(4):296-302.
[24]刘金庆,张勇,印萍,等.青岛近岸海域表层沉积物重矿物分布及物源[J].海洋地质与第四纪地质,2016,36(1):69-78.
[25]韦钦胜,于志刚,冉祥滨,等.黄海西部沿岸流系特征分析及其对物质输运的影响[J].地球科学进展,2011,26(2):145-156.
[26]王昆山,石学法,林振宏.南黄海和东海北部陆架重矿物组合分区及来源[J].海洋科学进展,2003,21(1):31-40.
[27]王中波,杨守业,李日辉,等.黄河水系沉积物碎屑矿物组成及沉积动力环境约束[J].海洋地质与第四纪地质,2010,30(4):73-85.
[28]朱玉荣.潮流场对渤、黄、东海陆架底质分布的控制作用[J].海洋地质与第四纪地质,2001,21(2):7-13.
[2]吕全荣,严肃庄.长江河口重矿物组合的研究及其意义[J].华东师范大学学报(自然科学版),1981(1):76-86.
[3]刘建国.全新世渤海泥质区的沉积物物质组成特征及其环境意义[D].北京:中国科学院研究生院(海洋研究所),2007.
[4]金秉福,宫立新,宋键.大沽河泥沙来源的重矿物分析及其环境意义[J].海洋科学,2010,34(10):71-76.
[5]王志远,张新刚,薛翠珍,等.莱阳市五龙河水污染问题及控制对策[J].山东水利,2006(1):10.
[6]杨姗姗.乳山河雨洪资源利用效应分析与评价[D].济南:济南大学,2014.
[7]王安国,张训华,李广雪,等.山东半岛近岸海区全新世泥质沉积体研究现状[J].海洋地质前沿,2013,29(10):52-58.
[8]李安春,陈丽蓉,李铁钢.山东半岛南部近海表层沉积物矿物组合特征及其物源与沉积动力环境指示意义[J].海洋科学,2000,24(3):57-57.
[9]程鹏,高抒.北黄海西部海底沉积物的粒度特征和净输运趋势[J].海洋与湖沼,2000,31(6):604-615.
[10]刘炳辰.渤海中南部碎屑矿物特征与沉积环境[D].烟台:鲁东大学,2013.
[11]林晓彤,李巍然,时振波.黄河物源碎屑沉积物的重矿物特征[J].海洋地质与第四纪地质,2003,23(3):17-21.
[12]王昆山,石学法,蔡善武,等.黄河口及莱州湾表层沉积物中重矿物分布与来源[J].海洋地质与第四纪地质,2010,30(6):5-12.
[13]孔庆祥,金秉福,刘春暖.莱州浅滩表层沉积物重矿物分布特征及物源识别[J].海洋科学,2014,38(12):86-93.DOI:10.11759/hykx2013021001.
[14]王昆山,石学法,李珍,等.东海DGKS9617岩心重矿物及自生黄铁矿记录[J].海洋地质与第四纪地质,2005,25(4):41-45.
[15]初凤友,陈丽蓉,申顺喜,等.南黄海自生黄铁矿成因及其环境指示意义[J].海洋与湖沼,1995,26(3):227-233.
[16]刘忠诚,金秉福,王金城,等.辽东湾滨岸带矿物组合分区及其意义[J].海洋通报,2014,33(3):268-276.
[17]乔淑卿,石学法,王国庆,等.渤海底质沉积物粒度特征及输运趋势探讨[J].海洋学报(中文版),2010,32(4):139-147.
[18]刘忠诚.辽东湾海岸带沉积物碎屑矿物分析及其环境意义[D].烟台:鲁东大学,2014.
[19]邓凯,杨守业,王中波,等.台湾山溪性小河流碎屑重矿物组成及其示踪意义[J].沉积学报,2016,34(3):531-542.
[20]颜彬,谢敬谦,黄博,等.广东近岸海域矿物特征指数分布及指示意义[J].海洋地质前沿,2017,33(11):1-8.
[21]董江,李安春,徐方建,等.东海内陆架EC2005孔重矿物组合特征及其物源指示意义[J].海洋与湖沼,2015,46(6):1292-1303.
[22]张永明,毕建强,孙圣堂,等.青岛崂山头海域海底滑坡的声波探测[J].工程地球物理学报,2012,9(2):170-174.
[23]赵广涛,王德滋,曹钦臣,等.I-A型复合花岗岩体的热演化及其意义——以崂山花岗岩体为例[J].中国科学:地球科学,1998,28(4):296-302.
[24]刘金庆,张勇,印萍,等.青岛近岸海域表层沉积物重矿物分布及物源[J].海洋地质与第四纪地质,2016,36(1):69-78.
[25]韦钦胜,于志刚,冉祥滨,等.黄海西部沿岸流系特征分析及其对物质输运的影响[J].地球科学进展,2011,26(2):145-156.
[26]王昆山,石学法,林振宏.南黄海和东海北部陆架重矿物组合分区及来源[J].海洋科学进展,2003,21(1):31-40.
[27]王中波,杨守业,李日辉,等.黄河水系沉积物碎屑矿物组成及沉积动力环境约束[J].海洋地质与第四纪地质,2010,30(4):73-85.
[28]朱玉荣.潮流场对渤、黄、东海陆架底质分布的控制作用[J].海洋地质与第四纪地质,2001,21(2):7-13.
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