Aztec Siltstone

Aztec Siltstone
Stratigraphic range: Late Devonian,
(Famennian?)
TypeFormation
Unit ofTaylor Group
UnderliesBeacon Heights Orthoquartzite
OverliesWeller Sandstone
Thickness220 metres (720 ft)
Lithology
Primarysandstone, claystone, siltstone
Otherlimestone, conglomerate
Location
RegionVictoria Land
CountryAntarctica
Type section
Named forAztec Mountain
Named byWebb, 1963

Aztec Siltstone is a geological formation in Victoria Land, Antarctica. It is part of the Taylor Group which preserves fossils dating back to the Middle-Late Devonian boundary. The formation is the uppermost formation in the group and overlays the Beacon Heights Orthoquartzite and underlies the Weller Sandstone. It preserves an alluvial plain environment with a seasonal climate, a large amount of fish fossils including both placoderms and acanthodians have been found in the formation.

This page is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.