HUBUNGAN KANDUNGAN MINERAL KUARSA DAN MINERAL LAINNYA DENGAN SEDIMEN DASAR LAUT DI KEPULAUAN ARUAH PROVINSI RIAU

Authors

  • Deny Setiady Puslitbang Geologi Kelautan Author
  • Ediar Usman Puslitbang Geologi Kelautan Author

DOI:

https://doi.org/10.47599/bsdg.v8i2.84

Abstract

Secara geologi perairan Selat Malaka, termasuk dalam kawasan granit Sumatera bagian barat sebagai satu rangkaian pulau-pulau timah yang membujur dari daratan Thailand – Malaysia hingga Bangka – Belitung. Berdasarkan hal tersebut maka perairan tersebut kemungkinan kaya
dengan potensi mineral-mineral letakan yang bernilai ekonomis. Tujuan penulisan paper ini adalah mengetahui hubungan kandungan mineral dengan sedimen dasar laut yang ada di daerah penelitian.
Berdasarkan analisis besar butir, sedimen yang terdapat di dasar laut daerah perairan Kepulauan Aruah adalah: pasir lanauan (zS) Pasir lempungan (cS), lanau pasiran (sZ), Lanau Lempungan (cZ), lempung lanauan (zC) serta lempung (C).
Berdasarkan analisis mineral,  mineral di daerah penelitian terdiri dari kuarsa dengan kandungan antara 60 – 80%. Mineral lainnya adalah zirkon, cassiterite, hematit, magnetit, limonit, biotit dan dolomit.
Endapan letakan pada sedimen permukaan dasar laut secara mekanik umumnya terkonsentrasi oleh sungai dan  proses laut.  Mineral kuarsa dan mineral berat adalah mineral yang merupakan endapan letakan yang berasal dari pelapukan batuan dan tertransport.

References

Bachelor, B.C., 1983, Sundaland Tin Placer and Late Caenozoic Coastal and Offshore Stratigraphy in Western Malaysia and Indonesia. Unpubl.

Cameron, N.R, Kastawa. W. & Thompson, S.J., 1982. Peta Geologi Lembar Dumai, Sumatera, sekala 1:250.000. Puslitbang Geologi.

Folk, RL., 1980, Petrology of Sedimentary Rocks, Hamphill Publishing Company Austin, Taxa Gretchen Luepke, 1984, Stability of Heavy Minerals in Sediment. U.S. Geologocal Survey Menlo, California.

Herbert S. Zim, 1978, Rocks and Minerals, (Field Guide and Introduction to the Geology and Chemistry , Western Publishing Company. Inc.

Ringis, J., 1993. Deposit Models for Detrital Heavy Minerals on East Asian Shelf Areas and the Use of High Resolution Seismic Profiling Techniques in Their Exploration, CCOP Publication.

Rittenhouse, G., 1943. Transportation and Deposition of Heavy Minerals; Geology Society American Bulletin, USA.

Rubey, W.W., 1933. The Size Distribution of Heavy Minerals Within A Water-laid Sandstone; Journal Sediment Petrology

Usman, E. dan Subandrio, A.S., 2009. Eksplorasi Potensi Konsentrat Timah Berdasarkan Data Seismik Refleksi: Studi Kasus Perairan Bangka Utara. Prosiding Kolokium Puslitbang Tekmira 2009, Bandung.

Downloads

Published

2013-08-08

Issue

Vol. 8 No. 2 (2013): Buletin Sumber Daya Geologi

Section

Buletin Sumber Daya Geologi

License

Authors whose manuscripts are published in Buletin Sumber Daya Geologi agree to the following terms:

  1. Publication rights to all published materials are held by Buletin Sumber Daya Geologi with the knowledge of the authors, while the moral rights remain with the authors.
  2. All articles are published under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).
  3. Under this license, anyone may copy, redistribute, and adapt the work for non-commercial purposes, provided that appropriate credit is given to the authors and the journal, a link to the license is provided, any changes are indicated, and adapted works are distributed under the same license.
  4. Commercial use of the published material requires written permission from the publisher.
  5. Authors may deposit the published version of their article in institutional repositories, personal websites, or academic networks, provided that the original publication in Buletin Sumber Daya Geologi is acknowledged with its DOI.