A source of aggregate, but land may be better utilized as pasture. Contains fragile, white snails, both flat whorls and high spired. Fine-grained sediment of marsh, ponds or small lake, and stream floodplain. 1-3 m across, are supported in a clayey, poorly sorted sand matrix. Unit resembles Tse unit except Td unit has more boulders.
Abundant joints intersect bedding.
Sandstone is a moderately hard, low-density rock. White crossbedded sandstone grades upward into beds of mudflow breccia. The sandstone becomes more pebbly upward and grades into mudflow breccia.