here's some real-life evidence that yes, maybe if the RoF gang is running around shooting laser beams, that just might explain their very high success rate with their drilling program of late, seeing as it's proven it's usefulness elsewhere in the world.
Disclaimer: half of what they're saying in the next paragraph I'm sure has ramifications that I am blissfully unaware of....
| Laser-ablation microprobe (LAM)-ICPMS unravels the highly siderophile element geochemistry of the oceanic mantle. (2001) |
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Luguet, A.,
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Alard, O.,
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Lorand, J. P.,
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Pearson, N. G.,
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Ryan, C.,
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O'Reilly, S. Y.
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Abstract |
| The highly siderophile element (HSE) contents of base-metal sulphides have been determined by laser-ablation microprobe (LAM)-ICPMS in abyssal peridotites from the Mid-Atlantic and South West Indian ridges. (Pd/Ir)N (0.007–505, N: CI-chondrite-normalised), (Pt/Ir)N (0.001–0.77) and (Rh/Ir)N (0.159–273) vary significantly between both grains and samples, irrespective of indicators of melt removal, but in line with bulk-rock platinum-group element (PGE) ratios and sulphide modal abundances. Positive deviations of PGE abundance ratios in whole-rock analyses are due to late-precipitated Cu–Ni-rich magmatic sulphides from incompletely extracted partial melts. These results contradict explanations of the HSE systematics of the oceanic mantle as reflecting global scale processes such as core–mantle exchange. |
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