Structural Analysis-Road Traversing

Outcrop 4.1

Qs 263814 E

636632N

• Tanjung Jaga.

• This area is known as House of pegmatite.

• There is the tafoni/honeycomb structure formed on the hornfel due to the chemical weathering by the sea water.

• Inclusion of hornfel: Hornfel inside the younger pegmatite.

• The pegmatite is not dyke type because the pegmatite is parallel to hornfel layer.

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Outcrop 4.2

Qs 269379 E

643175 N

• Seri Perigi

• The elevation from sea level is 51m and the direction from river downstream is 333˚

• Presence of the pegmatite.

• Ripple mark can be observed on the quartzite.

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Outcrop 4.3

Qs 274681 E

644985 N

• Presence of fractures

• 3 sets of fracture can be observed

• Normal fault had occurred with 171˚ angle of direction.

• The rock is interbedded of quartzite and slate

• Foliation can be observed

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Outcrop 4.4.1

Qs 272027 E

642824 N

• Taman Rekreasi Gunung Jerai

• Elevation from sea level is 724m

• Presence of hornfel with quartz vein.

• The quartz vein has sharp boundary.

• Presence of fractures

• River traversing starting here.

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Outcrop 4.4.2

Qs 272603E

642798N

• Quartz vein that intrudes quartzite can be observed.

• 42cm thick and 174˚ direction angle.

• Presence of fractures

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Outcrop 4.4.3

Qs 272006E

642775N

• Hornfel can be observed with quartz vein.

• Presence of fractures

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Outcrop 4.4.4

Qs 272019E

642747N

• Banding hornfel can be observed.

• There is also dextral fault formed on the rock.

• Presence of fractures

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Outcrop 4.4.5

Qs 272035E

642728N

• Hornfel with quartz vein.

• Quartz vein

• 25.5cm thick

• 9 ˚ direction angle.

• Presence of fractures

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Outcrop 4.4.6

Qs 272056E

642682N

• Hornfel with quartz vein

• Fractures and joint can be found.

• Exfoliation fractures also can be observed.

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Outcrop 4.4.7

Qs 272081E

642619N

• Banding hornfel with quartz vein.

• Presence of fractures and joint.

• Normal fault can be seen

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Outcrop 4.4.8

Qs 272091E

642588N

• 774m elevation from sea level

• Banding hornfel with quartz vein

• The hornfel looks like stairs because some part is weathered and other part are resist from weathering.

• Presence of fracture.

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