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The Magnetic Properties of Indonesian Lake Sediment: A Case Study of a Tectonic Lake in South Sulawesi and Maar Lakes in East Java

Journal of Mathematical and Fundamental Sciences · Vol. 42 No. 1 (2013) · hlm. 31–48

DOI
10.5614/itbj.sci.2010.42.1.4
ISSN
2338-5510, 2337-5760
Terbit
2013-07-21
Penerbit
Directorate for Research and Innovation (DRI) ITB
Bahasa
eng

Abstrak

Magnetic properties of sediments from two different environmental settings in Indonesia have been studied using rock magnetic methods and scanning electron microscopy (SEM). In the first setting, magnetic measurements were conducted on core sediments from two maar lakes in East Java (Lakes Lading and Bedali) that represent very confined environments where sediments are derived mainly from rocks and soils within the craters. In the second setting, similar measurements were obtained on core sediment from Lake Matano, a cryptodepression lake in tectonically active South Sulawesi where the area around the lake is dominated by highly magnetic lateritic soils. The results show that the predominant magnetic mineralogy in sediments from Lakes Lading, Bedali, as well as Matano is pseudo-single domain (PSD) magnetite (Fe3O4). Compared to that of Lake Matano, the maar lake sediments of Lakes Lading and Bedali have higher magnetic susceptibility as well as high intensity of ARM and SIRM. Variations in magnetic susceptibility in all core sediments are controlled mainly by the concentration of magnetic minerals. The homogeneity of magnetic minerals in these three lakes sediment provides an excellent setting for interpreting paleoclimatic signals as they will be recorded as anomalies of magnetic susceptibility.

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  • Universitas Halu Oleo
  • Sam Ratulangi University
  • Bandung Institute of Technology
  • Brown University
  • Lambung Mangkurat University
  • Padjadjaran University
  • Mulawarman University
  • Organisasi lain
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Rekan penulisOrganisasiArtikel bersama
Rosliana EsoUniversitas Halu Oleo3
Dolfie Paulus PandaraSam Ratulangi University3
Ferdy FerdySam Ratulangi University3
Maria Daurina BobantoSam Ratulangi University3
Ping Astony AngmalisangSam Ratulangi University2
Maureen G. KumaunangSam Ratulangi University2
Irwan IskandarBandung Institute of Technology2
Kartika Hajar KiranaPadjadjaran University2
Widodo WidodoBandung Institute of Technology2
Sudarningsih SudarningsihLambung Mangkurat University2
Muhammad YasinUniversitas Halu Oleo1
Fahyuddin FahyuddinUniversitas Halu Oleo1
Miftah KhairaniUniversitas Halu Oleo1
Halima HalimaUniversitas Halu Oleo1
Roliana EsoUniversitas Halu Oleo1
Nurdianto NurdiantoUniversitas Halu Oleo1
La HasanudinUniversitas Halu Oleo1
Erlina LazahimuUniversitas Halu Oleo1
Edi CahyonoUniversitas Halu Oleo1
Alfian AlfianMulawarman University1
Muhammad Kabil DjafarUniversitas Halu Oleo1
Herdi BudimanUniversitas Halu Oleo1
La GubuAfiliasi tidak diketahui1
Indra AlamsyahUniversitas Halu Oleo1
Lilis LaomeUniversitas Halu Oleo1
Norma MuhtarUniversitas Halu Oleo1
Askar KohalsumUniversitas Halu Oleo1
Asih Nofriasih KalamUniversitas Halu Oleo1
Kawengian Warouw Alex MasengiSam Ratulangi University1
Stepanus TangdanSam Ratulangi University1
Guntur PasauSam Ratulangi University1
Darharta DahrinBandung Institute of Technology1
Silvia Jannatul FajarBandung Institute of Technology1
Raghel YungingerState University of Gorontalo1

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Sumber metadata: OAI-PMH (metadata jurnal) https://journals.itb.ac.id/index.php/jmfs/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">The Magnetic Properties of Indonesian Lake Sediment: A Case Study of a Tectonic Lake in South Sulawesi and Maar Lakes in East Java</dc:title>
	<dc:creator>Tamuntuan, Gerald</dc:creator>
	<dc:creator>Bijaksana, Satria</dc:creator>
	<dc:creator>Gaffar, Edy</dc:creator>
	<dc:creator>Russell, James</dc:creator>
	<dc:creator>Safiuddin, la Ode</dc:creator>
	<dc:creator>Huliselan, Estavanus</dc:creator>
	<dc:description xml:lang="en-US">Magnetic properties of sediments from two different environmental settings in Indonesia have been studied using rock magnetic methods and scanning electron microscopy (SEM). In the first setting, magnetic measurements were conducted on core sediments from two maar lakes in East Java (Lakes Lading and Bedali) that represent very confined environments where sediments are derived mainly from rocks and soils within the craters. In the second setting, similar measurements were obtained on core sediment from Lake Matano, a cryptodepression lake in tectonically active South Sulawesi where the area around the lake is dominated by highly magnetic lateritic soils. The results show that the predominant magnetic mineralogy in sediments from Lakes Lading, Bedali, as well as Matano is pseudo-single domain (PSD) magnetite (Fe3O4). Compared to that of Lake Matano, the maar lake sediments of Lakes Lading and Bedali have higher magnetic susceptibility as well as high intensity of ARM and SIRM. Variations in magnetic susceptibility in all core sediments are controlled mainly by the concentration of magnetic minerals. The homogeneity of magnetic minerals in these three lakes sediment provides an excellent setting for interpreting paleoclimatic signals as they will be recorded as anomalies of magnetic susceptibility.</dc:description>
	<dc:publisher xml:lang="en-US">Directorate for Research and Innovation (DRI) ITB</dc:publisher>
	<dc:date>2013-07-21</dc:date>
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	<dc:identifier>10.5614/itbj.sci.2010.42.1.4</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Mathematical and Fundamental Sciences; Vol. 42 No. 1 (2010); 31-48</dc:source>
	<dc:source>2338-5510</dc:source>
	<dc:source>2337-5760</dc:source>
	<dc:language>eng</dc:language>
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