Beacon Supergroup

The Beacon Supergroup and diabase intrusions.
Beacon Supergroup in Taylor Valley. The tan bands are Beacon Sandstone layers and the dark layers are diabase sills, intruded about 180 million years ago.

The Beacon Supergroup is a geological formation exposed in Antarctica and deposited from the Devonian to the Triassic (400 to 250 million years ago). The unit was originally described as either a formation or sandstone, and upgraded to group and supergroup as time passed. It contains a sandy member known as the Beacon Heights Orthoquartzite.[1]

  1. ^ Bradshaw, Margaret A. (August 6, 2013). "The Taylor Group (Beacon Supergroup): the Devonian sediments of Antarctica". Geological Society of London, Special Publications. 81 (1): 67–97. Bibcode:2013GSLSP.381...67B. doi:10.1144/SP381.23. S2CID 128566638. Retrieved December 13, 2013.