Organic Compounds in Early Solar System Aqueous Fluids

[摘要] thermally-metamorphosed ordinary chondrite regolith breccias (Monahans 1998, hereafter simply “Monahans” ( 5) and Zag (H3-6)) contain fluid inclusion-bearing halite (NaCl) crystals dated to be ~4.5 billion years old. Thus, compositional data on fluid inclusions in these halites will reveal unique information regarding the origin and activity of aqueous fluids in the early solar system, and especially their interactions with organic mate- rial. Our initial analyses of solid inclusions in Monahans halite has shown the presence of olivine, high- and low- Ca pyroxene, feldspars, magnetite, sulfides, phyllosilicates, zeolites, metal, phosphates and abundant organics. We age of carbon, carbonates and organics in these residues, and low but significant amino acids concentrations in Monahans and Zag halite.

[发布日期] 2019-07-07

[学科分类] 空间科学

[关键词] AMINO ACIDS;AQUEOUS SOLUTIONS;CARBONATES;CRYSTALS;HIGH RESOLUTION;INCLUSIONS;METAMORPHISM (GEOLOGY);MOISTURE CONTENT;ORGANIC COMPOUNDS;PHOSPHATES;RESIDUES;SECONDARY ION MASS SPECTROMETRY;SPATIAL RESOLUTION;SPUTTERING;SULFIDES;WATER