• EveningStar open pit Mount Magnet October. Bob Watchorn sketch 1987.
  • Leonora giant ring structure on Landsat.
  • Yilgarn surficial geology showing Cauden giant ring structure. Blewett 2004
    Yilgarn surficial geology showing Cauden giant ring structure. Blewett 2004
  • Yamarna giant ring cluster
  • Jack Towers cottage Mt Magnet bob Watchorn Sketch October 1987
  • Hannans Brown Hill shaft Kalgoorlie, 1894 Bob Watchorn sketch 1996
  • Wogarno shearing shed, Kirkalocka. WASO recital 1991. Bob Watchorn Sketch, 1991
  • Great Boulder Early Shafts 1893. Bob Watchorn Sketch 1997
  • Mt Bischoff water cannon 1895. largest tin mine in world at that time. Kick started Tasmania's economy.
  • The Olgas Kata Tjudata, from the west 1996. Bob Watchorn Sketch 1996.
  • Kalgoorlie Baptist Church, Bob Watchorn Sketch 1998
  • Cooktown Queensland from Grassy Hill to the south. Bob Watchorn sketch 2006
  • Cliff Dweller houses, Arizona USA Bob Watchorn sketch 2006
  • Barnhill Station Bungles Kimberly Western Australia. Bob Watchorn Sketch 2009
  • Cattle truck Hillside Station Pilbara Western Australia. Bob Watchorn Sketch 2009
  • Balcony overlooking Port Hedland bay Pilbara. Bob Watchorn Sketch 2009
  • Hobart from Lance and Shirley Watchorn's balcony. Bob Watchorn sketch 1999.
  • Evening Star open pit Mt Magnet. Bob Watchorn Sketch 1987
  • Silver Lake Shaft WMC Kambalda. First big Nickel mine in Australia Bob Watchorn Sketch 1996
  • Silver Lake Shaft WMC Kambalda. First big Nickel mine in Australia Bob Watchorn Sketch 1996
  • Cooktown from Grassy Hill on the Endeavor river, Queensland. Bob Watchorn Sketch 2006
  • Cooktown from Grassy Hill on the Endeavor river, Queensland. Bob Watchorn Sketch 2006
  • Fishing boat harbour. Albany 2006
  • Fishing boat harbour. Albany 2006
  • Shalom retreat, Manjimup Western Australia 2003
  • Victory-defiance open pit Kambalda. Bob Watchorn Sketch 1994
  • Hill 50 main shaft, Mt Magnet western Australia. Bob Watchorn Sketch 1987
  • Perth, Western Australia from beneath Mt Henry Bridge, Mt Pleasant. Bob Watchorn Sketch 1999
  • The granites, Mt Magnet, Western Australia. Bob Watchorn Sketch 1987.
  • Two intrepid divining-rod prospectors, Peter Cook and Donald Thompson, Wingellina nickel project, Western Australia 2006
  • Brown Hill Shaft. Mt Magnet, Western Australia. Bob Watchorn sketch 1988.
  • Brown Hill Shaft. Mt Magnet, Western Australia. Bob Watchorn sketch 1988.
  • Eclipse mine shaft Mt Magnet. Bob Watchorn sketch 1987.
  • Eclipse mine shaft Mt Magnet. Bob Watchorn sketch 1987.
  • Boogardie State Battery, Mt Magnet, Western Australia. Bob Watchorn Sketch 1988
  • Boogardie State Battery, Mt Magnet, Western Australia. Bob Watchorn Sketch 1988
  • Great Boulder main shaft Kalgoorlie, Western Australia 1903. Bob Watchorn Sketch 1997.
  • Great Boulder main shaft Kalgoorlie, Western Australia 1903. Bob Watchorn Sketch 1997.
  • Hesperus Dawn Gold Mine Ruins, Mt Magnet, western Australia. Bob Watchorn sketch 1997.
  • Hesperus Dawn Gold Mine Ruins, Mt Magnet, western Australia. Bob Watchorn sketch 1997.
  • Edward Carson shaft, Mt Magnet, Western Australia. Bob Watchorn sketch 1988.
Moon Mares Archaean Craton comparison

Moon mares and Australasian Cratons, a structural geology study of giant ring structures (phi Ø structures) at various scales and depths.

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Moon Mares and the Australian Lithosphere-Asthenosphere 250 km deep boundary comparison using seismic tomography (Paper 1). This paper is the first to summarise my recent research on Moon mares and … [Read More]

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Watchorn probable impact structure research

YW #5 Watchorn Probable Impact Structure – relationship to mineralisation. Landsat, Radiometrics, Gravity and Seismic research 1999 – 2018.

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The 700 km diameter Watchorn Probable Impact Structure, prima facies evidence in ELV 071 core, relationship to mineralisation, Landsat, Radiometrics, Gravity and Seismic research 1999   –  2018.

The following evidence suggests Watchorn probable impact structure is an impact structure. The morphometric dimensions of an impact structure of 700 km maximum diameter are observed in Landsat, topographic, gravity, radiometric and seismic data. Prima facies evidence of impact is seen in ELV 071 core which is located on the strong Leonora inner ring.

This paper is the culmination of nearly 50 years research of the Yilgarn by the author. It will change the fundamental way in which the geology of the Yilgarn is viewed and explored.

Watchorn 450 km diameter Wiluna ring, seismic sections , comparison with Chicxulub seismic section.
Watchorn 450 km diameter Wiluna ring plan, prima facies evidence in ELV 071 core seismic sections and comparison with Chicxulub seismic section.

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