异端邪说2
发表于 2025-3-28 18:12:08
. . . . . . . . . . . . . . . . . 32 Time to cool — birth of the Kaapvaal continent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Old crust in the Vredefort Dome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
photophobia
发表于 2025-3-28 21:50:42
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不知疲倦
发表于 2025-3-29 00:50:24
Hans-Martin Krolzig . . . . . . . . . . . . . . . . . 32 Time to cool — birth of the Kaapvaal continent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Old crust in the Vredefort Dome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
缓解
发表于 2025-3-29 04:15:12
Hans-Martin Krolzig a highly sensitive fluorometric method has been developed to determine the boron content in iron and stone meteorites. The detection limit lies at the ppb-level. For the lithium determination we use a thermal-neutron activation technique..In Canon Diablo and in Toluca iron we found 0.02 and 0.03 pp
Muscularis
发表于 2025-3-29 08:26:05
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collateral
发表于 2025-3-29 15:22:23
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厌倦吗你
发表于 2025-3-29 17:40:20
Hans-Martin Krolzighen differences in volatility could also be considered the main type of cause of this fractionation. The enrichment of Fe, however, would have to have occurred at a much earlier stage than the fractionation indicated by the composition of ordinary chondrites as compared to Type I carbonaceous chondr
抛物线
发表于 2025-3-29 21:51:06
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ANT
发表于 2025-3-30 03:48:09
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繁重
发表于 2025-3-30 05:29:31
Hans-Martin Krolzigeorite. The variations have been examined very carefully and no instrumental effect has been found which could explain these anomalies. If a neutron irradiation were to be retained as a possible explanation, the flux required would be compatible with the limit set by the Boron results mentioned abov