From: jl@glen--canyon.com   
      
   On Wed, 31 Dec 2025 11:01:50 +0000, Martin Brown   
   <'''newspam'''@nonad.co.uk> wrote:   
      
   >On 29/12/2025 16:04, john larkin wrote:   
   >> On Mon, 29 Dec 2025 18:43:12 +1100, Bill Sloman    
   >> wrote:   
   >>   
   >>> On 29/12/2025 3:17 am, john larkin wrote:   
   >>>> On Mon, 29 Dec 2025 03:08:19 +1100, Bill Sloman    
   >>>> wrote:   
   >   
   >>>>> John's not entirely correct. There are meteorites that have fallen to   
   >>>>> earth that seem to have been kicked off Mars.   
   >>>>   
   >>>> "Seem to" !   
   >>>>   
   >>>> The theory is good for selling museum tickets.   
   >>>   
   >>> As the wikipedia page points out, the trace element profiles match those   
   >>> seen by the Mars rover.   
   >>>   
   >>> It's be better founded theory than you want to acknowledge, probably   
   >>> because you haven't got a clue about the science that backs it up.   
   >>   
   >> Oh, I've worked with TOF atom probe spectroscopy and backscatter   
   >> analysis and analytical NMR and all sorts of exotic physics.   
   >> Physiscists need help with circuits.   
   >>   
   >> But a lot of the solar system has rocks with similar isotopic content.   
   >> Declaring a meteorite to be a chunk knocked of Mars is a real   
   >> hand-waver.   
   >   
   >Not really. The oxygen isotopic signature on Mars is different enough to   
   >recognise Mars rocks. Although that doesn't stop charlatans on eBay   
   >selling Mars meteorites that are just similar looking Earth rocks.   
   >   
   >Anyone with a stable isotope MS or a noble gas MS would be able to test   
   >the gasses in inclusions and see old Martian atmosphere if it is real.   
      
   Wouldn't therre be a lot of diffusion in billions of years?   
      
   Same for ice cores.   
      
      
   John Larkin   
   Highland Tech Glen Canyon Design Center   
   Lunatic Fringe Electronics   
      
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