• 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.
lunar mares structural geology analogy to giant ring structures

YN #2. 700 km Norseman GRS on Landsat. New paradigm for Yilgarn exploration.

by

This paper describes research on the Norseman Giant Ring Structure (GRS). The GRS was visible on Landsat, despite limited geological outcrop and woodland and semi-desert sandplain cover. The Kambalda ring is a particularly persistent 1000 km arc. The Norseman GRS is unaffected by the regional geology. The relatively undeformed rings suggest that the lower crust was, and has remained, rigid. Outpouring of huge volumes of lava onto this rigid lower crust may have been similar to the formation of the Mares on top of the Moon. Greenstones and mineralisation follow the rings. The giant mines at Kalgoorlie, St Ives and Kambalda are on the dark margins of the rings and Norseman lies right in the centre. The Vredefort dome caused a giant gold and uranium province and the Sudbury structure has one of the world’s biggest nickel fields. How would this mineralisation be remobilized under 15 – 20km of overlying crust? How and where would it be deposited? The Chicxulub impact structure exhibits similar features to the Yilgarn Craton GRS. Giant ring structures in Archaean Cratons have not been recorded or researched. This places a major constraint on the current Yilgarn Craton research.

Like it? Share it!
yamarna GRS landsat radiometrics interp

YY # 2 Yamarna GRS. Landsat provides Independent Coincident Evidence.

by

YY # 2 Yamarna giant ring structures.  Comparison of the radiometric and Landsat Giant Ring Structures. Independent Coincident Evidence of the radiometrics. Yamarna Landsat giant ring structures Yamarna enhancement The … [Read More]

Like it? Share it!

YN #1. Norseman, an unreported 700 km diameter giant ring structure. Real or imaginary? Impact structure or superplume?

by

      YN #1. Norseman, an unreported 700 km diameter giant ring structure defined by radiometrics.  Real or imaginary? Impact structure or superplume? Is a revision of Yilgarn Craton … [Read More]

Like it? Share it!