Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia

Hard rock formation,s consisting of granite and metasedimentary rocks in Peninsular Malaysia, have been considered to be of poor aquifers. The hydrogeologic map of the Malay Peninsular in 1975 shows the area underlain by hard rock as having poor to moderate potential for groundwater production (&l...

Full description

Main Authors: Sapari, Nasiman, Raja Azie, R.Z, Jusoh, Hisyam
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.8358 /
Published: Universiti Putra Malaysia 2012
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access: http://eprints.utp.edu.my/8358/1/Groundwater_from_Fractured_Granite_and_Metasedimentary_Rocks.pdf
http://www.pertanika.upm.edu.my/
http://eprints.utp.edu.my/8358/
Tags: Add Tag
No Tags, Be the first to tag this record!
id utp-eprints.8358
recordtype eprints
spelling utp-eprints.83582017-03-20T02:20:37Z Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia Sapari, Nasiman Raja Azie, R.Z Jusoh, Hisyam TA Engineering (General). Civil engineering (General) Hard rock formation,s consisting of granite and metasedimentary rocks in Peninsular Malaysia, have been considered to be of poor aquifers. The hydrogeologic map of the Malay Peninsular in 1975 shows the area underlain by hard rock as having poor to moderate potential for groundwater production (<230m3/ well/day). This paper presents a finding of productive hard rock aquifers in the west coast of Peninsular Malaysia. Data from tubewell drillings carried out for industrial water supply were analyzed. It was found that the hard rocks could yield fresh water up to a maximum of 890m3/well/day. The wells were between 50 m and 200 m deep. High discharge rates of groundwater above 300m3/well/day were encountered from wells that penetrate major fracture zones. The hard rocks are generally fractured at various depths. Groundwater in interconnected fractures has a steady flow that sustains production during pumping tests and actual usage of the wells. This phenomenon indicates that the groundwater is being recharged by infiltration of rainwater through the overlying weathered rocks and soils. Tubewells in hardrock of West Coast of Peninsular Malaysia were found to have average discharge rates of 343m3/well/day. However, some of the deep tubewells that are more than 150 m depth, penetrated only weathered granite, are generally non productive (<70m3/well/day). Limited fracture openings and restricted recharge areas are likely to be the reason for the low discharge. Clay particles in fractures were observed to be the factor for the low success rate and poor quality of the water particularly in metasedimentary areas. Universiti Putra Malaysia 2012 Article PeerReviewed application/pdf http://eprints.utp.edu.my/8358/1/Groundwater_from_Fractured_Granite_and_Metasedimentary_Rocks.pdf http://www.pertanika.upm.edu.my/ Sapari, Nasiman and Raja Azie, R.Z and Jusoh, Hisyam (2012) Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia. Pertanika J. Sci. & Technol., 20 (2). pp. 371-379. ISSN 0128-7680 http://eprints.utp.edu.my/8358/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Sapari, Nasiman
Raja Azie, R.Z
Jusoh, Hisyam
Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia
description Hard rock formation,s consisting of granite and metasedimentary rocks in Peninsular Malaysia, have been considered to be of poor aquifers. The hydrogeologic map of the Malay Peninsular in 1975 shows the area underlain by hard rock as having poor to moderate potential for groundwater production (<230m3/ well/day). This paper presents a finding of productive hard rock aquifers in the west coast of Peninsular Malaysia. Data from tubewell drillings carried out for industrial water supply were analyzed. It was found that the hard rocks could yield fresh water up to a maximum of 890m3/well/day. The wells were between 50 m and 200 m deep. High discharge rates of groundwater above 300m3/well/day were encountered from wells that penetrate major fracture zones. The hard rocks are generally fractured at various depths. Groundwater in interconnected fractures has a steady flow that sustains production during pumping tests and actual usage of the wells. This phenomenon indicates that the groundwater is being recharged by infiltration of rainwater through the overlying weathered rocks and soils. Tubewells in hardrock of West Coast of Peninsular Malaysia were found to have average discharge rates of 343m3/well/day. However, some of the deep tubewells that are more than 150 m depth, penetrated only weathered granite, are generally non productive (<70m3/well/day). Limited fracture openings and restricted recharge areas are likely to be the reason for the low discharge. Clay particles in fractures were observed to be the factor for the low success rate and poor quality of the water particularly in metasedimentary areas.
format Article
author Sapari, Nasiman
Raja Azie, R.Z
Jusoh, Hisyam
author_sort Sapari, Nasiman
title Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia
title_short Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia
title_full Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia
title_fullStr Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia
title_full_unstemmed Groundwater from Fractured Granite and Metasedimentary Rocks in the West Coast of Peninsular Malaysia
title_sort groundwater from fractured granite and metasedimentary rocks in the west coast of peninsular malaysia
publisher Universiti Putra Malaysia
publishDate 2012
url http://eprints.utp.edu.my/8358/1/Groundwater_from_Fractured_Granite_and_Metasedimentary_Rocks.pdf
http://www.pertanika.upm.edu.my/
http://eprints.utp.edu.my/8358/
_version_ 1741196116762820608
score 11.62408

Similar Items