STAG2022
Stratigrafi Malaysia
Stratigrafi Semenanjung Malaysia
Geologi Johor Timur
Kamal Roslan Mohamed, Geologi UKM
GEOLOGI JOHOR TIMUR
Kamal Roslan Mohamed, Geologi UKM
A review on Palaeozoic lithostratigraphy
of east Johor, Malaysia
by :
SUGENG S SURJONO 1,2
MOHD. SHAFEEA LEMAN1
CHE AZIZ ALI1
KAMAL ROSLAN MOHAMED1
1Schoolof Environmental Science and Natural Resources,
Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, MALAYSIA
2Geological Engineering Department, Faculty of Engineering,
Gadjah Mada University, Yogyakarta, INDONESIA
AGC-GSM
Kangar-Perlis-Malaysia
2004
Kamal Roslan Mohamed, Geologi UKM
INTRODUCTION
Some controversies on Palaeozoic stratigraphy in east Johor :
lithostratigraphic order and age of Metamorphic rock,
Murau conglomerate as well as volcanic rocks.
The Palaeozoic stratigraphy of East Johor is still obviously
poorly understood (thus needed a revision)
A comprehensive study on stratigraphic correlation of
Palaeozoic rocks of east Johor in relation with the whole
eastern belt of Peninsular Malaysia is needed.
AGC-GSM
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2004
Kamal Roslan Mohamed, Geologi UKM
OBJECTIVES :
To review lithostratigraphy of Palaeozoic rocks in eastern
Johor
To re-establish the stratigraphic order of Palaeozoic rocks
in eastern Johor
To understand the depositional mechanism of each
Palaeozoic rocks unit in eastern Johor in the scale of basin
To relate the depositonal mechanism with basin setting
To understand the basin development in eastern Johor during
the Palaeozoic
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Geological map of east Johor :
Source : Peta Geologi Semenanjung Malaysia
Cetakan ke-8, 1985.
Jabatan Penyiasatan Kajibumi,
Malaysia (D. Santokh Singh).
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Some stratigraphic column of eastern Johor
Kamal Roslan Mohamed, Geologi UKM
The distribution of Palaeozoic rocks in east Johor :
After Mohd. Shafeea Leman, et al., 2003.
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Kamal Roslan Mohamed, Geologi UKM
Mersing Formation:
• Widely distributed in eastern Johor and southeastern Pahang
• The oldest rock in eastern Johor, overlain unconformably by all other
sedimentary rocks formations
• Composed by metamorphic rocks such as schist, phyllite and
quarzite, some interbedding of slate and metaquarzite
• Folded, faulted and intruded by granite; quartz vein is common as
crack filling
The depositional environment :
- shallow marine to mixed condition (Foo, 1983)
- deep sea clastic sediment (Suntharalingam, 1991).
- this study : shallow marine environment.
Age:
- Carboniferous-Permian (Drummond, 1962)
- Permian (Suntharalingam, 1991).
- Pre-Permian (this study)
Previous denomination :
- Mersing beds (Cook and Suntharalingam, 1970 ) AGC-GSM
- Mersing Group (Suntharalingam, 1991) Kangar-Perlis-Malaysia
2004
Kamal Roslan Mohamed, Geologi UKM
Distribution of Tg. Murau
Mersing Formation
Alternating of shale-
slate and
metasediment rock
Tg. Balau
Schist-phyllite and
quarzite
interbedding
Tg. Punggai
Metasediment with
cross-bed sedimentary
structure
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Post Mersing rocks/Formation
Unconformable deposited above the Mersing Formation are clastic
sediment (Murau Conglomerate Formation, Dohol Formation) and volcanic
rocks (Sedili, Jasin and Pengerang volcanics)
Murau Conglomerate Formation
Jasin Volcanics
Dohol Formation, Sedili Volcanics
Pengerang volcanics
AGC-GSM
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Kamal Roslan Mohamed, Geologi UKM
Murau Conglomerate Formation
• Formerly included as member of the Tembeling Formation
(Koopmans, 1968). Burton (1973) and Khoo (1977) excluded Murau
Conglomerate from Tembeling Formation because of its geographic
isolation. Ahmad Jantan et al, (1988) supposed to upgrade as a
Formation
• Distributed along the east coast from Tg Sekakap- Tg Tenggaroh, and
at Pulau Batu Chawang, Mersing (Ibrahim Abdullah, et al, 1991) and
Tg Leman (Suntharalingam, 1991).
• Composed of disorganized thick bedded breccia, gravelstone and sandstone
series forming a sequence deposited by fan-delta system (Surjono et al, 2003)
• Unconformably overlying the Mersing Formation with the provenance from
Mersing Formation itself.
• The volcanic elements was absence.
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Geological map of Murau area :
Basal
conglomerate
with clasts of
slate and
metaquartzite
of Merisng
Formation
disconformity
angular unconformity
AGC-GSM
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Lithological logs of Murau Conglomerate Formation
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Dohol Formation
• Distributed in eastern part of G Sumalayang, mainly in the upper
reaches of Sungai Sedili, associated with Sedili volcanic.
• Composed of shale-siltstone-fine sandstone interbedding, thickly
bedded claystone and thin bed of tuffaceous sandstone
• In the middle part limestone unit named as the Sumalayang
limestone member is deposited
• Dohol Formation and Sedili Volcanic are interpreted as a shallow marine
origin
• In Gunung Belumut, Kon’no et al., (1970) and Rajah, (1986) confirmed
that Linggiu Formation was unconformably deposited above the Dohol
Formation
• Dohol Formation was grouped together with Linggiu Formation
into Mersing Group by Suntharalingam, (1991)
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Kamal Roslan Mohamed, Geologi UKM
The distribution of
Dohol Formation and Sedili volcanic
Tebak Formation
Sedili volcanic
Dohol Formation
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Kamal Roslan Mohamed, Geologi UKM
Sungai Sedili traverse: Dohol Formation
Bedded limestone as member of
Dohol Formation
Thick bed of volcanic rocks forming
Sedili Volcanic in Sumalayang area
Thick claystone of Shale-fine sandstone of Dohol Formation
Dohol Formation
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G. Sumalayang traverse
Dohol Formation
Unconformity
Cross-bedded sandstone
of Tebak Formation
Weathered gravely sandstone (Tebak
Formation) overlying the thin beds shale
(Dohol Formation)
Shale and siltstone interbedding composing
Dohol Formation
Stalactite, resulted by precipitation of limestone member of Dohol Formation AGC-GSM
Kangar-Perlis-Malaysia
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Kamal Roslan Mohamed, Geologi UKM
G. Sumalayang traverse
Sedili Volcanic
Thick and massive tuff in the upper
part of Sedili volcanic
Pyroclastic flow structure
of Sedili Volcanic
Tuffaceous sandstone
and tuff interbed of
Sedili volcanic
Lithic clasts in pyroclastic rock
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Lithological columns from several trverses of G. Sumalayang
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Stratigraphic correlation of G. Sumalayang area
Tebak Formation (Mesozoic)
Dohol
Limestone Formation
member
Sedili volcanic
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Jasin Volcanic
Bomb as pyroclastic fall product at
Tg. Arong Baharu
Pyroclastic rocks (volcanogenic) of
tuffaceous shale and clasystone.
Upper part of Tg Penyabung
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Pengerang Volcanic
Tanjung Belungkur
Rocks show pyroclastic flows, forming thick
bed succession. The clasts composed of lapili, AGC-GSM
lithic and re-sedimented of pyroclastic rocks Kangar-Perlis-Malaysia
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Kamal Roslan Mohamed, Geologi UKM
Pengerang Volcanic
Teluk Ramunia
Tlk. Ramunia
Rocks is produced by several volcanic
activities such as intrusions, lava flows
as well as pyroclastic flows
Tg. Datuk
Tg. Pengerang
Tg. Rengit AGC-GSM
Kangar-Perlis-Malaysia
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Kamal Roslan Mohamed, Geologi UKM
Age of the formations
1. The age of Dohol Formation is determined by the presence of fusulinid
in the Sumalayang limestone. Suntharalingam (1991) determined the age
of Dohol Formation as Early to Middle Permian. Igo et al., (1979)
inferred as upper Lower Permian to early Middle Permian
?Parafusulinid in
Sumalayang limestone
2. Sedili volcanic which has interfingering contact with Dohol Formation,
thus was interpreted as Middle Permian in age.
3. Linggiu Formation was interpreted as a Late Permian age based on Linggiu
floral assemblege (Kon’no et al., 1970).
AGC-GSM
Kangar-Perlis-Malaysia
2004
Kamal Roslan Mohamed, Geologi UKM
Age of the formations (cont)
4. Jasin volcanic is also interpreted as Permian (Cook And Suntharalingam, 1971);
Late Permian to Early Triassic (Suntharalingam, 1991).
5. Pengerang volcanic is interpreted being deposited at Carboniferous-Triassic
(Grubb, 1968); Early Triassic (Foo, 1983).
6. Murau Conglomerate Formation is interpreted Palaeozoic of Early Permian or
older which is deposited before volcanic rocks
7. Mersing Formation is interpreted to be deposited before Murau Conglomerate
Formation (Pre Early Permian). This formation served as basement rocks for
all Permian Formations.
8. All of formation with Permian of age and older was intruded by Mesozoic
granite and was unconformably overlain by Tebak and Panti Formations
(Late Jurrassic to Early Cretaceous).
AGC-GSM
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Kamal Roslan Mohamed, Geologi UKM
Stratigraphic column of eastern Johor
AGC-GSM
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Conclusions
1. A new stratigraphic chart for the Palaeozoic of east Johor is introduced in
order to understand more about the basin evolution
2. The new stratigraphic chart is important for correlation with Palaeozoic rocks
of the eastern belt of Peninsular Malaysia
3. Several stratigraphic denomination were revised according to the standard
suggested by the Malaysian Stratigraphic Code
4. Further study is needed to established some stratigraphic units that have
caused much of past uncertainties and debatable input
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Kamal Roslan Mohamed, Geologi UKM
Acknowlegment
We wish to thanks the Malaysian Ministry of Science, Technology and
Environment for granting the IRPA 02-02-02-0012-EA186 under which the
field and laboratory works were carried out. Many thanks are also due to
staffs of Geology Programme UKM for their help at various stages of this
research
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Kamal Roslan Mohamed, Geologi UKM
Sekian…
Kamal Roslan Mohamed, Geologi UKM
