论文标题
火星坦佩·塔拉（Tempe Terra）以东的倒河道带和洪泛区粘土：对早期火星持续的河流活动的影响
Inverted Channel Belts and Floodplain Clays to the East of Tempe Terra, Mars: Implications for Persistent Fluvial Activity on Early Mars
论文作者
论文摘要
火星早期的气候是主要的未解决问题之一。目前尚不清楚火星早期温暖，潮湿，寒冷和冰冷。火星上的形态学特征，例如弯曲的山脊可能会提供关键的限制来解决此问题。在这里，我们调查了火星坦佩Terra（Tempe Terra）东部的几个弯曲的山脊，发现它们可能已经记录了早期火星的持续河流活动。我们的分析表明，这些山脊可能代表在大量地质时间内由蜿蜒的河流形成的通道带和堤岸沉积物的发掘。沿山脊侧面分布的分层带有蒙脱石的矿物质可能是碎屑或真实的洪泛区粘土。我们对地层关系的解释表明，层状的丝状材料位于通道皮带沉积之间，支持洪泛区解释。我们的结果表明，在火星的诺阿希时期，持续的变暖事件持续存在着地质显着的间隔（> 1500年）。
The climate on early Mars is one of the major unsolved problems. It is unclear whether early Mars was warm and wet or cold and icy. Morphological features on Mars such as sinuous ridges could provide critical constraints to address this issue. Here we investigate several sinuous ridges to the east of Tempe Terra, Mars and find they may have recorded persistent fluvial activity on early Mars. Our analysis indicates that these ridges may represent exhumation of the channel belts and overbank deposits formed from meander rivers over significant geologic time. Layered smectite-bearing minerals, distributed along the ridge flanks, could be detrital or authigenic floodplain clays. Our interpretation of the stratigraphic relationships indicates that the layered smectite-bearing materials lie between channel belt deposits, supporting the floodplain interpretation. Our results suggest that a persistent warming event has persisted for a geologically significant interval (>1500 yr) during the Noachian period of Mars.
