Palaeostress analyses of the northeast-dipping Koki Fault Zone
demonstrates in the hanging wall an east-west compressive stress
and sinistral reverse-slip. Data from the footwall region are more
uncertain and may relate to rotation of the stress field during
fault motion. The fault-plane solution of the 1979 Port Moresby earthquake
(Modified Mercalli Intensity 5-7 at epicentre 70 km east of Port
Moresby) shows east-west compression and a stress field identi