RT @NHM_Meteorites: Extinct short-lived #radioisotope systems can #date events in the early #solarsystem. Mn-Cr dating of secondary mineral…
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RT @NHM_Meteorites: Extinct short-lived #radioisotope systems can #date events in the early #solarsystem. Mn-Cr dating of secondary mineral…
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Extinct short-lived #radioisotope systems can #date events in the early #solarsystem. Mn-Cr dating of secondary minerals constrains the timing of parent body alteration on #asteroids. Recent work suggests that some #hydrated asteroids formed late. https:
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We can measure the age of the carbonates in CM chondrites using the Mn-Cr system (53Mn decays to 53Cr). Turns out that water-rich asteroids must have accreted and experienced aqueous alteration within the first 10 million years of the solar system! https:/