西沙群岛西科1井第四纪钙藻及其生态功能

马兆亮; 祝幼华; 刘新宇; 罗威; 马瑞芳; 徐守立

doi:10.3799/dqkx.2015.059

西沙群岛西科1井第四纪钙藻及其生态功能

doi: 10.3799/dqkx.2015.059

马兆亮^{1, 2,},
祝幼华¹,
刘新宇³,
罗威³,
马瑞芳^{1, 2},
徐守立³

1.
中国科学院资源地层学与古地理学重点实验室, 江苏南京 210008
2.
中国科学院大学, 地球科学学院, 北京 100049
3.
中海石油(中国)有限公司湛江分公司研究院, 广东湛江 524057

基金项目:

国家重大项目 2011ZX05025-002

国家自然科学基金 41272014

详细信息

作者简介:
马兆亮(1986-), 男, 博士, 研究方向新近纪以来有孔虫地层学与礁生态.E-mail: zhaolma@gmail.com

中图分类号: Q914.82
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出版历程
- 收稿日期: 2014-07-05
- 刊出日期: 2015-04-01

Quaternary Calcareous Algae from Well Xike-1 in Xisha Islands and Its Ecological Function

Ma Zhaoliang^{1, 2
,},
Zhu Youhua¹,
Liu Xinyu³,
Luo Wei³,
Ma Ruifang^{1, 2},
Xu Shouli³

1.
Key Laboratory of Economic Stratigraphy and Palaeogeography, Chinese Academy of Sciences, Nanjing 210008, China
2.
College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049, China
3.
Zhanjiang Branch of CNOOC Ltd., Zhanjiang 524057, China

摘要

摘要: 对西沙群岛西科1井第四纪地层中的钙藻进行了初步研究, 共鉴定钙藻3科7属, 包括红藻门珊瑚藻科让氏藻属、蟹手藻属、珊瑚藻属、石枝藻属和石孔藻属, 以及绿藻门松藻科仙掌藻属和粗枝藻科伞轴藻属.通过对地层中钙藻形态功能的分析, 西科1井第四纪早期海水较深, 沉积环境为礁前相, 中期外礁坪和内礁坪交替沉积, 至晚期出现短时间的泻湖相之后沉积环境演变为礁后滩相.西科1井第四纪钙藻在造礁功能上主要体现在2个方面: (1)通过自身的钙化作用, 为生物礁的生长供应微小碳酸盐颗粒沉积物; (2)利用自身形成的节片结构和生物捆扎-粘结结构参与造礁.
- 钙藻 /
- 造礁作用 /
- 第四纪 /
- 西科1井 /
- 西沙群岛 /
- 海洋地质
Abstract: This paper presents our study of the calcareous algae in the well Xike-1, Xisha Islands, and it is found that there are 3 families and 7 genera in the Quaternary sedimentary deposit mainly including Rhodophyta Corallinaceae Jania, Amphiroa, Corallina, Lithothamnium, Lithoporella and Rhodophyta Chlorophyta Codiaceae Halimeda and Dasycladaceae Cymopolia. Analysis of the stratigraphic distribution of the calcareous algae in the well Xike-1 shows that it was forereef facies in the early Quaternary and then became the outer reef flat facies alternated with the inner reef flat facies in the middle Quaternary. In the later Quaternary, it developed into the backreef beach facies mixed with brief lagoon facies. Calcareous algae played the role of providing calcareous skeleton debris and building reef framework.
- calcareous algae /
- reef-building function /
- Quaternary /
- well Xike-1 /
- Xisha Islands /
- marine geology

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图 2 西沙群岛西科1井第四纪绿藻门仙掌藻属(a，b)和伞轴藻属(c)

Fig. 2. Quaternary Chlorophyta Halimeda (a, b) and Cymopolia (c) of Xike-1 on Xisha Island

下载: 全尺寸图片幻灯片

图 1 西沙群岛西科1井第四纪珊瑚藻科

a.深度：0.03 m；b.深度：18.22 m；c.深度：19.71 m，d.深度：21.36 m；e.深度：1.11 m，f.深度：1.11 m；深度：63.71 m；i.深度：61.64 m.a.珊瑚藻属Corallina Linnaeus；b~d.让氏藻属Jania Lamouroux；e，f.蟹手藻属Amphiroa Lamouroux；g，h.石枝藻属Lithothamnium Philippi；i.石孔藻属Lithoporella Foslie

Fig. 1. Quaternary Corallinaceae of Xike-1 on Xisha Island

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图 3 节片结构(a, b)、粘结-捆扎结构(c, d)和碎片充填(e, f)

Fig. 3. Geniculum texture (a, b), binding-cementitious texture (c, d) and filling fragments (e, f)

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