Syntectonic mobility of supergene nickel ores of New Caledonia (Southwest Pacific). Evidence from faulted regolith and garnierite veins.

International audienceSupergene nickel deposits of New Caledonia that have been formed in the Neogene by weathering of obducted ultramafic rocks are tightly controlled by fracture development. The relationship of tropical weathering and tectonic structures, faults and tension gashes, have been investigated in order to determine whether fractures have play a passive role only, as previously thought; or alternatively, if brittle tectonics was acting together with alteration. From the observation of time-relationship, textures, and mineralogy of various fracture fills and fault gouges, it may be unambiguously established that active faulting has play a prominent role not only in facilitating drainage and providing room for synkinematic crystallisation of supergene nickel silicate, but also in mobilising already formed sparse nickel ore, giving birth to the very high grade ore nicknamed "green gold"

An empirical investigation of the anxiolytic and pain reducing effects of music

This article reports two empirical experiments investigating the anxiety and pain reducing effects of listening to music via personal stereo following surgical procedures involving general anaesthetic. Both experiments involved participants selecting music of their own choice. In Experiment 1, following minor surgery on the foot, 20 participants in an experimental group listened to music while 20 participants in a control group did not. Results indicate that the music group felt significantly less anxiety than the control group. No differences in pain measurements between the two groups were found. Experiment 2 involved a music listening group of 30 females and a no music control group of 28 females. Both groups underwent a total abdominal hysterectomy. Postoperative measures of pain, anxiety and patient-controlled analgesia were taken. No differences between the groups were obtained on these measurements. The results of both experiments are discussed with reference to subjective responses to musical stimuli