Cook flight-line map 1:250 000 SH/52-11

No abstract available

Cook TMI contour map 1:250 000 SH/52-11

No abstract available

Menindee TMI contour map 1:250 000 SI/54-03

No abstract available

Barton TMI contour map 1:250 000 SH/53-09

No abstract available

Ooldea TMI contour map 1:250 000 SH/52-12

No abstract available

White Cliffs TMI profile map 1:250 000

22-1/H54-12/4 Vertical scale: 200

Balladonia TMI contour map 1:250 000

22-1/I51-3/1 Contour interval: 20

Barton TMI profile map 1:250 000

22-1/H53-9/15 Vertical scale: 1

The stratigraphic implications of Monograptus exiguous from Camp Hill, Canberra, ACT

The Camp Hill Sandstone of Opik (1958) is unconformable not only on the Black Mountain Sandstone but also the State Circle Shale (whose age is established as Late Llandovery by the occurrence of Monograptus exiguus). It is almost certain that the Black Mountain Sandstone overlies the State Circle Shale, and is thus of Late Llandovery age, not Early Ordovician.

Impregnation of unconsolidated sediment samples, using a large vacuum chamber

A large cylindrical vacuum chamber has been constructed (1180 mm long, 405 mm diameter) and used for impregnating unconsolidated, undisturbed sediment samples. To ensure complete sample impregnation and to avoid stress fracturing of the resin, a very slow-curing impregnating mixture of Daystar Escon CR6-1 polyester resin with 0.5% by volume cumene hydroperoxide hardener is used in this chamber. This gives a curing time for large samples of about 1-3 months. With such long curing times, all but the finest-grained samples have been successfully impregnated.

1982