GIDDY
发表于 2025-3-23 10:21:37
Steuerbarkeit und Beobachtbarkeitdies of Martian meteorites (Nyquist ., 2001) to establish a rough chronology of Martian history. High crater densities in some areas, together with the existence of a 4.5 Gyr rock from Mars (ALH84001), which was weathered at about 4.0 Gyr, affirm that some of the oldest surfaces involve primordial c
膝盖
发表于 2025-3-23 14:25:08
Einführung in die digitale Regelungry of the Earth, a planet whose origins have been all but obliterated. Mars is not as depleted in moderately volatile elements as are other terrestrial planets. Judging by the data for Martian meteorites it has Rb/Sr ≈ 0.07 and K/U ≈ 19,000, both of which are roughly twice as high as the values for
清真寺
发表于 2025-3-23 18:23:18
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Biofeedback
发表于 2025-3-23 23:36:46
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ARCH
发表于 2025-3-24 05:31:02
Steuerbarkeit und Beobachtbarkeitof its surface features. The determination of Mars surface composition has thus the potential to identify the processes responsible for the entire Mars evolution, from geological timescales to seasonal variations. Due to technical challenges, only few investigations have been performed so far. They
挑剔小责
发表于 2025-3-24 08:41:16
Steuerbarkeit und Beobachtbarkeit rocks are igneous or sedimentary, but for petrogenetic reasons they could be igneous. We suggest a model in which Mars is covered by about 50% basaltic and 50% andesitic igneous rocks. The soils are a mixture of the two with addition of Mg-sulfate and -chloride plus iron compounds possibly derived
Pudendal-Nerve
发表于 2025-3-24 12:43:43
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你正派
发表于 2025-3-24 18:17:04
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flaunt
发表于 2025-3-24 22:05:52
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脾气暴躁的人
发表于 2025-3-25 02:20:18
Steuerbarkeit und Beobachtbarkeit proposed that these aquifers result from geologically recent melting of permafrost ice by sporadic, localized geothermal activity. This is consistent with evidence from crater counts and Martian meteorites that much higher-temperature geothermal activity has produced volcanic activity and lava flow