| 海南岛天涯海角和莺歌海海滩岩的特征与沉积、成岩环境 |
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| 引用本文： | 王建华.海南岛天涯海角和莺歌海海滩岩的特征与沉积、成岩环境[J].热带海洋学报,1991(4). |
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| 作者姓名： | 王建华 |
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| 作者单位： | 中山大学地质系 广州510275 |
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| 摘 要： | 海南岛天涯海角和莺歌海中全新世海滩岩的胶结物由泥晶状和叶片状高镁方解石、针状文石、微亮晶方解石等组成,具变化的胶结组构,沿剖面胶结物及其组构有一定的分带性;颗粒组分反映出高能波浪作用下海滩的沉积特点;岩石中可溶组分的K,Sr,Mg等元素的分布受岩层分布位置、生物屑数量、胶结物性质以及后期淡水改造的影响;天涯海角海滩岩中的δ~(18)O出现较高负值。
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| 关 键 词： | 海滩岩 胶结作用 组分特征 成岩环境 |
CHARACTERISTICS OF THE BEACHROCKS IN TIANYA-HAIJIAO AND YINGGEHAI, HAINAN ISLAND, AND THEIR DEPOSITIONAL,DIAGENETIC ENVIRONMENTS |
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| Wang Jianhua.CHARACTERISTICS OF THE BEACHROCKS IN TIANYA-HAIJIAO AND YINGGEHAI, HAINAN ISLAND, AND THEIR DEPOSITIONAL,DIAGENETIC ENVIRONMENTS[J].Journal of Tropical Oceanography,1991(4). |
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| Authors: | Wang Jianhua |
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| Abstract: | The cements of the middle-Holocene beachrocks in Tianya-Haijiao and Yinggebai, Hainan Island, consist of micritic and bladed Mg-calcite, aragonite needle, and micro-sparite calcite. There are various cementation fabrics which show also a band-distribution along the profile, as well as the cement minerals; depositional characteristics of high energy wave action on the beach appear in the grain components . The distributions of the elements K, Sr, Mg etc., are influenced by the position of rock layer, bioclastic quantity, nature of cement and transformed by freshwater in later period. The 18O of the beachrocks in Tianya-Haijiao shows high negative values. |
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| Keywords: | beachrock cementation component characteristics diagenetic environment |
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