Jezero crater is the landing site for the Mars 2020 Perseverance rover. The Noachian‐aged crater has undergone several periods of fluvial and lacustrine activity and phyllosilicate‐ and carbonate‐bearing rocks were formed and emplaced as a result. It also contains a portion of the regional Nili Fossae olivine‐carbonate unit. In this work, we performed spectral mixture analysis of visible/near‐infrared hyperspectral imagery over Jezero. We modeled carbonate abundances up to ∼35% and identified three distinct units containing different carbonate phases. Our work also shows that the olivine in Jezero is predominantly restricted to aeolian deposits overlying the carbonate rocks. The diversity of carbonate phases in Jezero points to multiple periods of carbonate formation under varying conditions.

中文翻译：

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火星Jezero火山口不同的碳酸盐岩岩性

Jezero陨石坑是2020年火星恒心漫游者的着陆点。诺亚纪的火山口经历了数个河流和湖相活动，结果形成并放置了含页硅酸盐和碳酸盐的岩石。它还包含了尼里·福萨地区的橄榄石-碳酸盐岩单元的一部分。在这项工作中，我们对Jezero上的可见/近红外高光谱图像进行了光谱混合分析。我们对高达〜35％的碳酸盐丰度进行了建模，并确定了包含不同碳酸盐相的三个不同单元。我们的工作还表明，杰泽罗（Jerzero）的橄榄石主要限于覆盖碳酸盐岩的风沙沉积物。Jezero中碳酸盐相的多样性表明在不同条件下碳酸盐形成的多个时期。