The origin of organic matter in the Martian meteorite ALH84001.
作者： Luann Becker , Brian Popp , Terri Rust , Jeffrey L. Bada
DOI: 10.1016/S0273-1177(99)00090-3
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摘要: Abstract Stable carbon isotope measurements of the organic matter associated with carbonate globules and bulk matrix material in ALH84001 Martian meteorite indicate that two distinct sources are present sample. The δ13C values for averaged −26‰ is attributed to terrestrial contamination. In contrast, yielded a value −15‰. only common on Earth yield similar values, other then some diagenetically altered marine carbonates, C4 plants. A −15‰, hand, consistent kerogen-like component, most ubiquitous form found carbonaceous chondrites such as Murchison meteorite. Examination using laser desorption mass spectrometry (LDMS) indicates presence high molecular weight component which appears be extraterrestrial origin, possibly derived from exogenous delivery meteoritic or cometary debris surface Mars.
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