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On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil

Much of the present coastal plains in the Malay Peninsula were inundated by seawater some 6,000 years ago. That was the time when pyrite is believed to have been mineralized in the sediments of the seawater. This paper attempts to explain the process of pyrite mineralization in the coastal sediments...

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Main Authors: Jusop, Shamshuddin, Mohd Sufian Kang, Enio Kang, Ishak, Che Fauziah, Panhwar, Qurban Ali
Format: Article
Language:English
Published: Malaysian Society of Soil Science 2013
Online Access:http://psasir.upm.edu.my/id/eprint/29409/1/On%20the%20pyritization%20of%20the%20coastal%20sediments%20in%20the%20Malay%20Peninsula%20during%20the%20Holocene%20and%20its%20effects%20on%20soil.pdf
http://psasir.upm.edu.my/id/eprint/29409/
http://www.msss.com.my/mjss/abs17.html
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spelling my.upm.eprints.294092016-07-13T01:48:36Z http://psasir.upm.edu.my/id/eprint/29409/ On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil Jusop, Shamshuddin Mohd Sufian Kang, Enio Kang Ishak, Che Fauziah Panhwar, Qurban Ali Much of the present coastal plains in the Malay Peninsula were inundated by seawater some 6,000 years ago. That was the time when pyrite is believed to have been mineralized in the sediments of the seawater. This paper attempts to explain the process of pyrite mineralization in the coastal sediments during the Holocene as well as to show how pyrite oxidation affects plants and aquatic life in their vicinity. At that point in time, the sea level was 3-5 meters above the present level. Under reduced conditions, Fe3+ ions existing in the sediments were reduced to Fe2+ ions, while SO42- anions from seawater were reduced to S2- ions. These reactions were promoted by microorganisms feeding on the organic matter provided by native vegetation. Finally, the ferrous and polysulfide ions reacted to form pyrite (FeS2). Over the years, this pyrite accumulated in the sediments, occurring at varying depths. In some sediment of the coastal plains of the Malay Peninsula, there are considerable amounts of pyrite; however, they are environment-friendly. When the areas are developed for agriculture or otherwise, this pyrite is exposed to atmospheric conditions, resulting in its oxidation which in turn leads to acidity and the formation of yellowish jarosite [KFe3(SO4)2(OH)6]. Toxic amounts of Al and Fe are usually present in the soils and water in the area, affecting crop growth and aquatic life. Malaysian Society of Soil Science 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29409/1/On%20the%20pyritization%20of%20the%20coastal%20sediments%20in%20the%20Malay%20Peninsula%20during%20the%20Holocene%20and%20its%20effects%20on%20soil.pdf Jusop, Shamshuddin and Mohd Sufian Kang, Enio Kang and Ishak, Che Fauziah and Panhwar, Qurban Ali (2013) On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil. Malaysian Journal of Soil Science, 17. pp. 1-15. ISSN 1394-7990 http://www.msss.com.my/mjss/abs17.html
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Much of the present coastal plains in the Malay Peninsula were inundated by seawater some 6,000 years ago. That was the time when pyrite is believed to have been mineralized in the sediments of the seawater. This paper attempts to explain the process of pyrite mineralization in the coastal sediments during the Holocene as well as to show how pyrite oxidation affects plants and aquatic life in their vicinity. At that point in time, the sea level was 3-5 meters above the present level. Under reduced conditions, Fe3+ ions existing in the sediments were reduced to Fe2+ ions, while SO42- anions from seawater were reduced to S2- ions. These reactions were promoted by microorganisms feeding on the organic matter provided by native vegetation. Finally, the ferrous and polysulfide ions reacted to form pyrite (FeS2). Over the years, this pyrite accumulated in the sediments, occurring at varying depths. In some sediment of the coastal plains of the Malay Peninsula, there are considerable amounts of pyrite; however, they are environment-friendly. When the areas are developed for agriculture or otherwise, this pyrite is exposed to atmospheric conditions, resulting in its oxidation which in turn leads to acidity and the formation of yellowish jarosite [KFe3(SO4)2(OH)6]. Toxic amounts of Al and Fe are usually present in the soils and water in the area, affecting crop growth and aquatic life.
format Article
author Jusop, Shamshuddin
Mohd Sufian Kang, Enio Kang
Ishak, Che Fauziah
Panhwar, Qurban Ali
spellingShingle Jusop, Shamshuddin
Mohd Sufian Kang, Enio Kang
Ishak, Che Fauziah
Panhwar, Qurban Ali
On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
author_facet Jusop, Shamshuddin
Mohd Sufian Kang, Enio Kang
Ishak, Che Fauziah
Panhwar, Qurban Ali
author_sort Jusop, Shamshuddin
title On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
title_short On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
title_full On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
title_fullStr On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
title_full_unstemmed On the pyritization of the coastal sediments in the Malay Peninsula during the Holocene and its effects on soil
title_sort on the pyritization of the coastal sediments in the malay peninsula during the holocene and its effects on soil
publisher Malaysian Society of Soil Science
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/29409/1/On%20the%20pyritization%20of%20the%20coastal%20sediments%20in%20the%20Malay%20Peninsula%20during%20the%20Holocene%20and%20its%20effects%20on%20soil.pdf
http://psasir.upm.edu.my/id/eprint/29409/
http://www.msss.com.my/mjss/abs17.html
_version_ 1643829752663900160
score 13.211869

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