A study on pre- and post-tsunami shallow deposits off SE coast of India from the 2004 Indian Ocean tsunami: a geochemical approach

被引:16
|
作者
Srinivasalu, S. [3 ]
Jonathan, M. P. [1 ]
Thangadurai, N. [3 ]
Ram-Mohan, V. [2 ]
机构
[1] Univ Autonoma Estado Hidalgo, Ctr Invest Ciencias Tierra & Mat, Pachuca 42184, Hidalgo, Mexico
[2] Univ Madras, Dept Geol, Sch Earth & Atmospher Sci, Madras 600025, Tamil Nadu, India
[3] Anna Univ, Dept Geol, Madras 600025, Tamil Nadu, India
关键词
Core sediments; Tsunami event; Geochemistry; Normalization; SE coast of India; NORTHERN CHILE 23-DEGREES-S; AMAZON CONTINENTAL-SHELF; SEDIMENTARY FACIES; SOUTHEAST COAST; TAMIL-NADU; INFERENCES; MINERALOGY; TEXTURE; BASINS; RECORD;
D O I
10.1007/s11069-009-9385-0
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
A study was made on samples from one core collected immediately after the December 2004 Asian tsunami to know the geochemical nature of the offshore tsunami sediments. The core sample was analyzed for sediment grain size, CaCO3, organic carbon (OC) and major elements (SiO2, TiO2, Al2O3, Fe2O3, CaO, MgO, Na2O, K2O, P2O5, MnO). The results indicate that the core sample can be divided into two parts: (1) upper 0-25 cm, interpreted to be deposited after tsunami (AT), and (2) lower 25-45 cm, interpreted as before tsunami (BT) as evidenced by the sandy nature AT with fluctuating CaCO3 contents. The AT part is devoid of OC suggesting that the sediment could have been transported to deeper regions along with the finer particles. Major elements such as SiO2, TiO2, CaO indicate high values than the other elements in AT part than in the BT part. The BT part contains Al rich alluvium mud associated with finer mud and organic particles. An analysis of the correlation matrix indicates the possible source of elements and transport of heavy minerals in the AT part than the BT part. The overall results suggest that the sediments could possibly have two different origins.
引用
收藏
页码:391 / 401
页数:11
相关论文
共 44 条
  • [1] A study on pre- and post-tsunami shallow deposits off SE coast of India from the 2004 Indian Ocean tsunami: a geochemical approach
    S. Srinivasalu
    M. P. Jonathan
    N. Thangadurai
    V. Ram-Mohan
    Natural Hazards, 2010, 52 : 391 - 401
  • [2] Identification and characterization of tsunami deposits off southeast coast of India from the 2004 Indian Ocean tsunami: Rock magnetic and geochemical approach
    S Veerasingam
    R Venkatachalapathy
    N Basavaiah
    T Ramkumar
    S Venkatramanan
    K Deenadayalan
    Journal of Earth System Science, 2014, 123 : 905 - 921
  • [3] Identification and characterization of tsunami deposits off southeast coast of India from the 2004 Indian Ocean tsunami: Rock magnetic and geochemical approach
    Veerasingam, S.
    Venkatachalapathy, R.
    Basavaiah, N.
    Ramkumar, T.
    Venkatramanan, S.
    Deenadayalan, K.
    JOURNAL OF EARTH SYSTEM SCIENCE, 2014, 123 (04) : 905 - 921
  • [4] Tsunami of December 26, 2004 on the southwest coast of India: Post-tsunami geomorphic and sediment characteristics
    Narayana, A. C.
    Tatavarti, R.
    Shinu, N.
    Subeer, A.
    MARINE GEOLOGY, 2007, 242 (1-3) : 155 - 168
  • [5] Characterization of 2004 Indian Ocean Tsunami induced deposits along the Chennai coast using magnetic and geochemical techniques
    Veerasingam, S.
    Venkatachalapathy, R.
    INDIAN JOURNAL OF GEO-MARINE SCIENCES, 2014, 43 (07) : 1378 - 1383
  • [6] Tsunami Intensity Mapping Along the Coast of Tamilnadu (India) During the Deadliest Indian Ocean Tsunami of December 26, 2004
    J. P. Narayan
    M. L. Sharma
    B. K. Maheshwari
    pure and applied geophysics, 2006, 163 : 1279 - 1304
  • [7] Tsunami intensity mapping along the coast of Tamilnadu (India) during the deadliest Indian Ocean tsunami of December 26, 2004
    Narayan, J. P.
    Sharma, M. L.
    Maheshwari, B. K.
    PURE AND APPLIED GEOPHYSICS, 2006, 163 (07) : 1279 - 1304
  • [8] Sheltered coastal environments as archives of paleo-tsunami deposits: Observations from the 2004 Indian Ocean tsunami
    Andrade, Vanessa
    Rajendran, Kusala
    Rajendran, C. P.
    JOURNAL OF ASIAN EARTH SCIENCES, 2014, 95 : 331 - 341
  • [9] Offshore depositional sequence of 2004 tsunami from Chennai, SE coast of India
    M. P. Jonathan
    S. Srinivasalu
    N. Thangadurai
    N. Rajeshwara-Rao
    V. Ram-Mohan
    T. Narmatha
    Natural Hazards, 2012, 62 : 1155 - 1168
  • [10] Offshore depositional sequence of 2004 tsunami from Chennai, SE coast of India
    Jonathan, M. P.
    Srinivasalu, S.
    Thangadurai, N.
    Rajeshwara-Rao, N.
    Ram-Mohan, V.
    Narmatha, T.
    NATURAL HAZARDS, 2012, 62 (03) : 1155 - 1168