Natural radionuclides contents in marine sediment: evidence for the paleoproductivity
A sediment core was obtained at one station in the North Pacific region, and for analyzed uranium, thorium and their daughter nuclides, and combustible fraction. Their concentrations vary considerably in the surface layer but was constant at deeper depth. This variation could be due to the temporal...
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Universiti Kebangsaan Malaysia
1997
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| Online Access: | http://journalarticle.ukm.my/3746/ http://journalarticle.ukm.my/3746/ |
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ukm-37462012-03-19T01:41:57Z http://journalarticle.ukm.my/3746/ Natural radionuclides contents in marine sediment: evidence for the paleoproductivity Che Abd. Rahim Mohamed, A sediment core was obtained at one station in the North Pacific region, and for analyzed uranium, thorium and their daughter nuclides, and combustible fraction. Their concentrations vary considerably in the surface layer but was constant at deeper depth. This variation could be due to the temporal changes on the seabed before being buried in the sediment column. The dilution of aluminosilicate detritus in uranium and thorium nuclides may be occurred. However, the constant concentrations of 230Th at the deeper (30 cm to 110 cm) are due to the past abruption. The calculated sedimentation rate was 1.56 mm/kyr at the surface (0 cm to 30 cm) and 4.55 mm/kyr at the bottom (110 cm to 180 cm) layer. Universiti Kebangsaan Malaysia 1997-06 Article PeerReviewed Che Abd. Rahim Mohamed, (1997) Natural radionuclides contents in marine sediment: evidence for the paleoproductivity. Sains Malaysiana, 26 (2). pp. 103-113. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol26um2_1997/vol26num2_97page103-113.html |
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Digital Repository |
| institution_category |
Local University |
| institution |
Universiti Kebangasaan Malaysia |
| building |
UKM Institutional Repository |
| collection |
Online Access |
| description |
A sediment core was obtained at one station in the North Pacific region, and for analyzed uranium, thorium and their daughter nuclides, and combustible fraction. Their concentrations vary considerably in the surface layer but was constant at deeper depth. This variation could be due to the temporal changes on the seabed before being buried in the sediment column. The dilution of aluminosilicate detritus in uranium and thorium nuclides may be occurred. However, the constant concentrations of 230Th at the deeper (30 cm to 110 cm) are due to the past abruption. The calculated sedimentation rate was 1.56 mm/kyr at the surface (0 cm to 30 cm) and 4.55 mm/kyr at the bottom (110 cm to 180 cm) layer. |
| format |
Article |
| author |
Che Abd. Rahim Mohamed, |
| spellingShingle |
Che Abd. Rahim Mohamed, Natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| author_facet |
Che Abd. Rahim Mohamed, |
| author_sort |
Che Abd. Rahim Mohamed, |
| title |
Natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| title_short |
Natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| title_full |
Natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| title_fullStr |
Natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| title_full_unstemmed |
Natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| title_sort |
natural radionuclides contents in marine sediment: evidence for the paleoproductivity |
| publisher |
Universiti Kebangsaan Malaysia |
| publishDate |
1997 |
| url |
http://journalarticle.ukm.my/3746/ http://journalarticle.ukm.my/3746/ |
| first_indexed |
2023-09-18T19:39:39Z |
| last_indexed |
2023-09-18T19:39:39Z |
| _version_ |
1777405504091324416 |