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australia:wa:pilbara

the Pilbara region of WA

Introduction

  • covers an area of 507,896 km2 and has a population of around 45,000 (~15% identify as indigenous peoples)
  • most live in the western third of the region, in towns such as Port Hedland, Karratha, Wickham, Newman and Marble Bar.
  • contains some of Earth's oldest rock formations including:
    • the stromatolites from from extinct cyanobacteria Pilbaria
    • 3.4 billion-year-old sandstones at Strelley Pool, which preserve fossils of sulfur-processing bacteria
    • 3byr old granites
    • banded iron formation (BIF)
  • landscapes of coastal plains and mountain ranges with cliffs and gorges
  • region includes the drainages of the Murchison, Gascoyne, Ashburton, Fortescue, and De Grey rivers.

Brief history

  • a large collection of World Heritage-listed petroglyphs at Murujuga near Dampier dated to thousands of yrs ago
  • 1st mined in 1888 - Pilbara Goldfield but alluvial gold ran out by mid-1890s
  • 1937, mining of asbestos commenced at Wittenoom Gorge.
  • 1950s, three British nuclear weapons tests were carried out in the Montebello Islands, 130 km off the coast
  • 1960's discovery of high-grade ore in the Hamersley Ranges
  • off-shore liquified natural gas (LNG) through the North West Shelf Venture and Pluto LNG plant, both operated by Woodside

Three distinct geographic areas:

  • Roebourne coastal sandplain - western third
  • central third - inland uplands of the Pilbara Craton, including the predominant Hamersley Range which has a considerable number of mining towns, the Chichester Range and others
    • KarijiniNP - some lovely gorges and refreshing waterholes, 4-6 day exploration 4WD trip consider base camp at Dales Campground
      • Hamersley Gorge is 350km south of Port Hedland and 700km NE of Canarvon and 115km W of Dales Campground
      • located near the asbestos mining ghost town of Whittenoom and the iron ore town of Tom Price
  • eastern third is almost entirely desert - The Great Sandy Desert
australia/wa/pilbara.txt · Last modified: 2024/10/13 20:15 by gary1

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