Annual Report for EL 1855 Yanduch Bore for 02/10/1978 to 01/10/1979

Abstract

The exploration programme on EL 1855 consisted of drilling, with seven rotary/mud holes completed, for a total of 1073 metres.

The drilling encountered a thick Tertiary overburden sequence, in excess of 160m. A new stratigraphic unit, informally named the Rib Bone Beds, and consisting of lignitic and carbonaceous clay and sand, with lignite seams, was intersected at the base of the Tertiary section. Mt. Eclipse Sandstone was intersected in drill holes in the northern half of the EL as a thin blanket deposit, with evidence of a very gradual thickening of the section to the northeast.