Abstract Late brittle extension is a common feature in orogenic belts, and its role mountain building processes still the subject of debate. Its timing relationship with crustal thickening, topography, basin infill, rock exhumation are key importance determining whether it major factor development or merely causes near-surface secondary effects. We examined this question relation to active arc-...

This paper deals with an adaptation of the genetic partitioning algorithm BOA, based on the estimation of distribution of promising solution, for the placement of the hypergraph nodes into the regular structure of allocations. This task is a simplification of the placement problem encountered in PCB design or more complex case of physical layout of gate array on VLSI chip level. We present top-...

Examples of heavy mineral placer deposits are presented in which wave reflection, refraction, diffraction and resonance would appear to have played a major concentrating role. Their geometry is compared with the computer generated patterns predicted for the reflection, refraction and diffraction of surface waves moving over fairly simple, idealised bathymetries. Much of this work is founded on ...

Collision between Australia and SE Asia began in Sulawesi, the world's eleventh-largest island, Early Miocene subsequently Neogene sediments were deposited largely coastal to shelf environments throughout island. These have been assigned Celebes Molasse, previously considered as a single post-orogenic unit unconformably on pre-Neogene sedimentary, metamorphic ophiolitic rocks. The most complete...

The property consists of 84 units in I I claims, staked in 1976 by H. Hopkins after finding copper-lead-zinc mineralization (Clendenan and Pentland, 1979). Since 1977, work by International Maggie Mines Ltd. and Placer Developrnent Limited (now Placer Dome Inc.) has included mapping, trenching, 78 drill holes tot:alling 8005 metres, and two short adits with drifts followinf; mineralization (Dru...