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Steeply dipping discordant pegmatite veins are crosscut by layering parallel granite sheets along which extensional top to South syntectonic displacement has occurred at ~490Ma. Person at bottom for scale. Extensional shears parallel to the pegmatite veins are evident.

Syntectonic granite sheets Salknappen, Antarctica.

Syntectonic granite sheets at Salknappen, Antarctica

Steeply dipping discordant pegmatite veins are crosscut by layering parallel granite sheets along which extensional top to South syntectonic displacement has occurred at ~490Ma. Person at bottom for scale. Extensional shears parallel to the pegmatite veins are evident.