GEO106S

Class of 1999

Western Cape Geological Excursions

Malmesbury Group

Neoproterozoic Metasediments

(Greywacke and Shale)

Cape Granite Suite

Sea Point Contact Migmatite Zone

Cape Granite Suite

Yzerfontein Gabbro/Diorite

Shoreline exposures of Malmesbury Group metasediments, Three Anchor Bay

Malmesbury Group metasediments folded in a tight syncline, Rocklands Beach

Malmesbury Group metasediments exposed at Bloubergstrand, with Table Mountain in the distance

Malmesbury Group metasediments exposed at Bloubergstrand

Tight folds with vertical axes, Malmesbury Group, Bloubergstrand

Red volcaniclastic metasediments, Malmesbury Group, Bloubergstrand

Bloubergstrand - outcrops of Malmesbury Group metasediments, with Table Mountain in the distance

Malmesbury Group metasediments, Sea Point

Veins of red jasper (ferruginous silica) developed in alteration zones, Yzerfontein diorite, Die Eiland

Contact zone between dark Malmesbury Group hornfels and fine-grained aplogranite

Aplogranite intruding Malmesbury hornfelses in the outer contact

Closely-spaced aplogranite veins in the outer contact zone

Aplogranite satellite bodies in the Malmesbury contact aureole

Transition from migmatite zone into homogeneous coarse porphyritic granite

Migmatite zone with dark plastically deformed Malmesbury hornfels blocks in granite

Outcrops of coarse porphyritic Cape granite at Sea Point

Migmatite zone with alternating bands of granite and streaked out Malmesbury hornfels

Migmatite zone with alternating bands of granite and streaked out Malmesbury hornfels

Metasedimentary and igneous xenolith cluster in granite, Froggy Pond, Cape Peninsula

Phase layering in gabbro, Yzerfontein

Metasedimentary and igneous xenolith cluster in granite, Froggy Pond, Cape Peninsula

Red jasper in fracture veins cutting altered Yzerfontein diorite, Die Eiland

Deep red jasper in fracture veins cross-cutting Yzerfontein diorite, Die Eiland

Irregular fracture veins with red jasper cutting altered Yzerfontein diorite, Die Eiland

Contact between Slipper's Bay granite and foliated Malmesbury schists

Locally concordant intrusive contact between Slipper's Bay granite and Malmesbury schists

Contact between pale Hoedjiespunt granite (foreground) and darker Saldanha Porphyry, Bomgat

Tabular xenolith of Malmesbury schist in Hoedjiespunt granite, Bomgat

Green zones of epidote alteration, Yzerfontein diorite, Die Eiland

Aplogranite vein containing dark mafic xenoliths, Yzerfontein diorite, Die Eiland

Mafic xenoliths (gabbro, diorite) hosted by pink aplogranite veins, Yzerfontein diorite, Die Eiland

Hoedjiespunt granite at the type locality

Aplite dyke propogating along foliation in Malmesbury schists, Slipper's Bay granite contact

Contact between aplite vein and Slipper's Bay granite

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