莱芜“红石”沉积环境分析
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摘要
山东莱芜红石公园内出露较大面积的红色岩层,研究其成因及其沉积环境,可以确定当时的古地貌和气候特征,因此具有重要意义。在红色岩层分布区采集7个样品,用XRF、激光粒度分析仪和扫描电镜等设备进行分析,结果发现红层主要成份是SiO_2和Al_2O_3,沉积粒度以细沙为主,沙粒上具有水成标志。确定莱芜红色岩层为丹霞地貌景观,形成于季节性河流沉积,当时气候比较炎热干燥。
There are large area of red outcrop in Laiwu Red Rock park of Shandong. Its ancient landform and paleoclimate features can be determined by studying its cause of formation and sedimentary environment,so the study is of great significance. In order to carry out the research,seven samples were collected in the red beds region.The samples were analysed by XRF,laser particle size analyzer and scanning electron microscopy. The results show that the main components of the red beds are SiO_2 and Al_2 O_3. The sedimentary particle size of the red beds is dominated by fine sand,and the sands have some hydatogenesis mark. According to the previous analysis,it can be speculated that the red beds belongs to Danxia landform,which deposited in seasonal river,and the climate was hot and dry at that time.
There are large area of red outcrop in Laiwu Red Rock park of Shandong. Its ancient landform and paleoclimate features can be determined by studying its cause of formation and sedimentary environment,so the study is of great significance. In order to carry out the research,seven samples were collected in the red beds region.The samples were analysed by XRF,laser particle size analyzer and scanning electron microscopy. The results show that the main components of the red beds are SiO_2 and Al_2 O_3. The sedimentary particle size of the red beds is dominated by fine sand,and the sands have some hydatogenesis mark. According to the previous analysis,it can be speculated that the red beds belongs to Danxia landform,which deposited in seasonal river,and the climate was hot and dry at that time.
引文
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Nesbitt H W,Young G M.1982.Early Proterozoic Climates And Plate Motions Inferred From Major Element Chemistry Of Lutites[J]].Nature,299(5885):715-717.
Racey A.2009.Mesozoic red bed sequences from SE Asia and the significance of the Khorat Group of NE Thailand[J].Geological Society London Special Publications,315(1):41-67.
Zhang Henhua,Jiang Qinghui,Zhou Chuangbing,et al.2014.Strength and failure characteristics of Jurassic Red-Bed sandstone under cyclic wetting-drying conditions[J].Geophys.J.Int.,198(2):1034-1044.
范庆斌,叶玮,陈渠.2014.江西南昌横岗“砂山”石英颗粒表面形态特征[J].干旱区地理,37(5):1170-1181.
贾建军,高抒,薛允传.2002.图解法与矩法沉积物粒度参数的对比[J].海洋与湖沼,33(6):577-582.
贾玉芳.2012.末次冰期以来鄱阳湖地区沙山沉积及其环境意义[D].济南:山东师范大学.
江新胜,徐金沙,潘忠习.2003.鄂尔多斯盆地白垩纪沙漠石英沙颗粒表面特征[J].沉积学报,21(3):416-422.
罗谷松,彭华,闫罗彬,等.2016.南方“红层荒漠”旅游开发价值分析[J].地理科学,36(4):555-563.
潘志新,彭华.2015.国内外红层分布及其地貌发育的对比研究[J].地理科学,35(12):1575-1584.
山东省地质矿产局.1991.山东省区域地质志[M].北京:地质出版社:157-173.
孙东怀,安芷生,苏瑞侠,等.2001.古环境中沉积物粒度组分分离的数学方法及其应用[J].自然科学进展,11(3):269-276.
王兆夺,于东生,罗福生,等.2016.图解法和矩法计算泉州湾表层沉积物粒度参数的对比[J].海洋地质前沿,32(7):19-27.
谢又予,崔之久.1980.某些石英砂的扫描电镜观察和比较[J].水文地质工程地质,(6):19-21.
徐瑞春,周建军.2010.红层与大坝[M].武汉:中国地质大学出版社.
Harald G Dill,Obidjan Kadirov,Yura Tsoy,et al.2007.Palaeogeography of Neogene red bed sequences along the Aksa-Ata River in the Parkent-Nurekata intermontane basin(Tien Shan Mountains,Uzbekistan):With special reference to the magnetic susceptibility of siliciclastic rocks[J].Journal of Asian Earth Sciences,29(5):960-977.
Marcela M Haldan,Cor G Langereis,Andrew J Biggin,et al.2009.Acomparison of detailed equatorial red bed records of secular variation during the Permo-Carboniferous Reversed Superchron[J].Geophys.J.Int.177(3):834-848.
Nesbitt H W,Young G M.1982.Early Proterozoic Climates And Plate Motions Inferred From Major Element Chemistry Of Lutites[J]].Nature,299(5885):715-717.
Racey A.2009.Mesozoic red bed sequences from SE Asia and the significance of the Khorat Group of NE Thailand[J].Geological Society London Special Publications,315(1):41-67.
Zhang Henhua,Jiang Qinghui,Zhou Chuangbing,et al.2014.Strength and failure characteristics of Jurassic Red-Bed sandstone under cyclic wetting-drying conditions[J].Geophys.J.Int.,198(2):1034-1044.