WorksheetsRG - Kinta Valley-Tertiary Rock
Total questions: 25
Worksheet time: 15mins
Choose the correct statements about Kinta Valley
limestones are evidently shelf-type and coralline types
passes laterally eastwards into strata of the Baling Group
fauna suggest warm water environments from the Silurian to Permian in the Kinta Valley
a possibility of a depositional break due to uplift and erosion during the Palaeozoic
The lithology of KL Area is
schists, phyllites, quartzites, some volcanics and rare limestone occur
thick Silurian limestone overlain by Upper Paleozoic (?) mudstone- sandstone sequence
thick limestone predominate ( Silurian – Permian)
In Kinta Valley, the oldest known sediments to be deposited appears to be
schists, phyllites, quartzites, some volcanics and rare limestone occur
carbonaceous argillaceous rocks of the Ordovician which may later be metamorphosed to black schists
thick Silurian limestone
The absence of clastic sediments in Kinta Valley suggest that
the area was some distance from land or neighbouring land was of low relief
continuous deposition of limestone
No evidence of Devonian earth movements
Choose the correct statement about Kinta Valley
shales form homogenous & low hills with relief
Clastic sedimentary rocks are found in southwest part of the Kinta Valley (Seri Iskandar)
Interbedded sandstone & mudstone strike nearly N-S & have very steep dip angle
All of the above
KL area composed of 4 rock formations;
Dinding Schist
Kenny Hill Formation
KL Limestone
Hawthorndon Schist
Karak Formation
What is the thickness and lithology of Dinding Schist
1830 meters of Upper Silurian marble
3400 m of quartz-mica schist, quartzite and subsidiary actinolite, diopside and epidote schist and schistose conglomerate
900 meters of non-fossiliferous carbonaceous schist and phyllite
Quartzite forms a discrete member 1770 m thick in the middle of the succession
The age fo Dinding Schist has been reassigned to
Lower Paleozoic based on mapping
Lower Silurian
Upper Silurian
Hawthorndon Schist has the lithology of
Interbedded sandstone and mudstone
quartz-mica schist, quartzite and subsidiary actinolite, diopside and epidote schist and schistose conglomerate
900m non-fossiliferous carbonaceous schist and phyllite
Which is incorrect about Hawthorndon Schist
passes conformably up into the thick Upper Silurian KL Limestone
Unit overlies a thick sequence of psammitic and pelitic schist
Age Lower Ordovician
May be a southern continuation of the Mahang Formation
What is the thickness and lithology of KL Limestone
900 meters of non-fossiliferous carbonaceous schist and phyllite
1830 meters of Upper Silurian marble
KL Limestone is located at
Damansara area
northern end of Klang Valley – Batu Caves
Choose the correct statements about KL Limestone
Richly fossiliferous in some horizons
Overlie a thick sequence of carbonaceous schist and phyllite
Marble is fine crystalline, grey to cream , thick bedded
All of the above
Fossils that can be found in KL Limestone are
tentaculites
corals
brachiopod
crinoids
What are the differences between Kenny Hill Formation and KL Limestone
Kenny Hill Formation is simper and different structural pattern from KL Limestone
Kenny Hill Formation is younger than KL Limestone
Kenny Hill Formation is older than KL Limestone
Why is Kenny Hill Formation is on unstable shelf?
lack of very coarse material in sand and high mineralogical maturity
Presence of deformational structures and evidence of re-sedimentation
Possible presence of brachiopods indicating not very shallow marine water
dominance of well rounded zircons in heavy mineral
all of the above
Which formations are similiar to Kenny Hill Formation giving its probable age of Upper Paleozoic to Carboniferous?
Singa Formation
Kubang Pasu Formation
Chuping Formation
What is the possible contact found in Kenny Hill Formation
Low angle thrust fault found in Damansara
reverse fault found in Damansara
Horst graben fault found in Damansara
Boring in Malacca and N. Sembilan revealed 2 major stratigraphic units which are
arenite and psammitic schist
restricted calcareous
Argillite and pelitic schist
Which statement is incorrect
Outcrops of Bentong can be traced Southwards through East N. Sembilan to Malacca
Kenny Hill Formation extended to N. Sembilan
Early Devonian rocks have not been proven in Selangor-Melaka area
Which describes the stratigraphic argillite unit found in Malacca and N. Sembilan
quartz sandstone and siltstone metamorphosed to schistose sericite and chloritic meta-quartzite, sillimanite and garnet bearing schist and gneiss
fine-grained silty beds with minor sandy, shaly and marly bands with subordinate arenaceous beds and occasionally chert and conglomerates
In the Western Belt, Triassic rocks can be found in which formation?
Kenny Hill Formation
Semanggol Formation
Karak Formation
Choose the correct statements about Triassic rocks in Western Belt
Have turbidite characteristics
underlies a sequence of probable post-Triassic redbeds unconformably
contacts between the Semanggol and older formations are interpreted to be folding
marine Triassic arenaceous and argillaceous rocks with chert bands
Why was there no Triassic sediments known in the tract of Western Belt from Kinta Valley southwards?
uplift probably preceded by deformation could have been initiated in the late Permian as the youngest known sediment is mid-Permian
due to uplifting during Triassic
erosion and upilft after Triassic
all of the above
The Tertiary rock found in Western Belt are represented by
small basinal rocks of shale and other clastics with coal bands
arenaceous and argillaceous rocks with chert bands
