Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia

Eight coal seams containing Neogene paralic coals from the Mukah coalfield, Sarawak, Malaysia, were investigated using petrographical, palynological, and organic geochemical analyses to describe coal-forming vegetation, paleoclimatic, and paleoenvironment conditions during peat development and precu...

Full description

Main Authors: Zainal Abidin, N.S., Mustapha, K.A., Abdullah, W.H., Konjing, Z.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.33297 /
Published: Nature Research 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130681806&doi=10.1038%2fs41598-022-12668-6&partnerID=40&md5=f24e78f5864c15bd4976bcb82e34b418
http://eprints.utp.edu.my/33297/
Tags: Add Tag
No Tags, Be the first to tag this record!
id utp-eprints.33297
recordtype eprints
spelling utp-eprints.332972022-07-26T06:39:55Z Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia Zainal Abidin, N.S. Mustapha, K.A. Abdullah, W.H. Konjing, Z. Eight coal seams containing Neogene paralic coals from the Mukah coalfield, Sarawak, Malaysia, were investigated using petrographical, palynological, and organic geochemical analyses to describe coal-forming vegetation, paleoclimatic, and paleoenvironment conditions during peat development and precursor mires, as well as their associations within a sequence-stratigraphic context. The petrographic and geochemical data of the coals imply the existence of oxygen-deficient and water-saturated conditions in the precursor mires. The reducing conditions in the mires were followed by biomass loss. The Mukah coals are suggested to be deposited in freshwater peat swamps, and the rich preservation of angiosperm pollen indicates that the organic matter in dense and lowland forest vegetation was mostly terrigenous. The overwhelming presence of Casuarina and Calamus types suggest the paleomires were closely linked to the Kerapah/Kerangas peat forest and were marginally bordered by rattan, which was supported by biomarker data. Rheotrophic�ombrotrophic mires temporarily formed due to water table fluctuations, which were strongly dependent on ever-wet climate changes and syn-depositional tectonics during the Neogene, and resulted in the balanced to high peat accumulation and preservation. A maximum thickness of 35 m of peat deposits is suggested to form between 10,000 and 175,000 years ago based on the peat:coal ratio. The coals are proposed to be influenced by transgressive to initial highstand cycles within the paralic setting. © 2022, The Author(s). Nature Research 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130681806&doi=10.1038%2fs41598-022-12668-6&partnerID=40&md5=f24e78f5864c15bd4976bcb82e34b418 Zainal Abidin, N.S. and Mustapha, K.A. and Abdullah, W.H. and Konjing, Z. (2022) Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia. Scientific Reports, 12 (1). http://eprints.utp.edu.my/33297/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Eight coal seams containing Neogene paralic coals from the Mukah coalfield, Sarawak, Malaysia, were investigated using petrographical, palynological, and organic geochemical analyses to describe coal-forming vegetation, paleoclimatic, and paleoenvironment conditions during peat development and precursor mires, as well as their associations within a sequence-stratigraphic context. The petrographic and geochemical data of the coals imply the existence of oxygen-deficient and water-saturated conditions in the precursor mires. The reducing conditions in the mires were followed by biomass loss. The Mukah coals are suggested to be deposited in freshwater peat swamps, and the rich preservation of angiosperm pollen indicates that the organic matter in dense and lowland forest vegetation was mostly terrigenous. The overwhelming presence of Casuarina and Calamus types suggest the paleomires were closely linked to the Kerapah/Kerangas peat forest and were marginally bordered by rattan, which was supported by biomarker data. Rheotrophic�ombrotrophic mires temporarily formed due to water table fluctuations, which were strongly dependent on ever-wet climate changes and syn-depositional tectonics during the Neogene, and resulted in the balanced to high peat accumulation and preservation. A maximum thickness of 35 m of peat deposits is suggested to form between 10,000 and 175,000 years ago based on the peat:coal ratio. The coals are proposed to be influenced by transgressive to initial highstand cycles within the paralic setting. © 2022, The Author(s).
format Article
author Zainal Abidin, N.S.
Mustapha, K.A.
Abdullah, W.H.
Konjing, Z.
spellingShingle Zainal Abidin, N.S.
Mustapha, K.A.
Abdullah, W.H.
Konjing, Z.
Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia
author_sort Zainal Abidin, N.S.
title Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia
title_short Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia
title_full Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia
title_fullStr Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia
title_full_unstemmed Paleoenvironment reconstruction and peat-forming conditions of Neogene paralic coal sequences from Mukah, Sarawak, Malaysia
title_sort paleoenvironment reconstruction and peat-forming conditions of neogene paralic coal sequences from mukah, sarawak, malaysia
publisher Nature Research
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130681806&doi=10.1038%2fs41598-022-12668-6&partnerID=40&md5=f24e78f5864c15bd4976bcb82e34b418
http://eprints.utp.edu.my/33297/
_version_ 1741197832666218496
score 11.62408

Similar Items