Karakteristik Endapan Kuarter di Dataran Aluvial Rawa Utara Pangkalan Balai, Kabupaten Banyuasin (Sumsel) ( Suatu Studi Awal dari Efek Perubahan Iklim dalam Proses Sedimentasi)

Herman Moechtar

Abstract


The sediments in this area are of fluvial and swarnp systems, The fluvial deposits include channel sand, and fine grained cIay of floodplain deposits. The swarnp deposits of Iine-grained include humic clay and peaty clay, the basement of this Quaternary deposits is tufaceous clay of pyroclastic.

The character of Quaternary depositional style at the PangkaIan Balai and surrounding is dominantly influenced by autogenic mechanisms (internal processes), such as river channel systems and sediment supply from the    surrounding hills.  The cIimate factor of allogenic rnechanisms (externaI processes) is specific to related humidity as chemicaI, physics, or biology aspects in time.

Keywords: Fasies, fluvial and swamp, internal and external process.


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References


Allen, J.RL, 1965. A riview of the origin and character of recent sediments. Sedimentology, 5, 89-191.

Allen, EA. and J.R, Allen, 1990. Basin Analysis, Principles and Application. Black Well Scientific Publication, 451 p,

Coleman, J.M., 1966, Ecological changes in a rnassivefreshwater day sequence. Trans. Gulf-Cst Ass. Geol. Soc., 16,159-174.

Collinson, J. D., 1986. Chapter 3 Alluvial Sediments. In ,H,G. Reading (ad), SedimenlBry Environments and Facies, Second Ed iIi onBlackwel1 S cientific Pu bl ications, Oxtord-Londo n -Ed i nbu rgh-Boston- Palo A Ito-Mel 00" rn e, 20-62.




DOI: http://dx.doi.org/10.33332/jgsm.geologi.v16i1.351

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Copyright (c) 1969 Herman Moechtar

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