Regolith - NASA
regolith reveal that it is stratified with many buried soil horizons. The maturity of a regolith sample is the integrated exposure that it had to the micrometeorite and solar wind environment. Maturity is variously measured by the agglutinate content, grain size distribution, and/or the amount of implanted solar wind rare gases.
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ALH84001 - NASA
curator.jsc.nasa.govMartian Meteorite Compendium C Meyer 2012 Figure 2: Photograph of exterior surface of Martian meteorite ALH84001.Note the large cavity on this surface. The cube is 1 cm. (NASA # S85-39567) Figure 3: Close-up photograph of a small piece of Martian meteorite ALH84001 illustrating rounded carbonate inclusions with orange interiors and black-white-black rims.
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