Stack Kathryn M, Williams Nathan R, Calef Fred, Sun Vivian Z, Williford Kenneth H, Farley Kenneth A, Eide Sigurd, Flannery David, Hughes Cory, Jacob Samantha R, Kah Linda C, Meyen Forrest, Molina Antonio, Nataf Cathy Quantin, Rice Melissa, Russell Patrick, Scheller Eva, Seeger Christina H, Abbey William J, Adler Jacob B, Amundsen Hans, Anderson Ryan B, Angel Stanley M, Arana Gorka, Atkins James, Barrington Megan, Berger Tor, Borden Rose, Boring Beau, Brown Adrian, Carrier Brandi L, Conrad Pamela, Dypvik Henning, Fagents Sarah A, Gallegos Zachary E, Garczynski Brad, Golder Keenan, Gomez Felipe, Goreva Yulia, Gupta Sanjeev, Hamran Svein-Erik, Hicks Taryn, Hinterman Eric D, Horgan Briony N, Hurowitz Joel, Johnson Jeffrey R, Lasue Jeremie, Kronyak Rachel E, Liu Yang, Madariaga Juan Manuel, Mangold Nicolas, McClean John, Miklusicak Noah, Nunes Daniel, Rojas Corrine, Runyon Kirby, Schmitz Nicole, Scudder Noel, Shaver Emily, SooHoo Jason, Spaulding Russell, Stanish Evan, Tamppari Leslie K, Tice Michael M, Turenne Nathalie, Willis Peter A, Yingst R Aileen
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA.
California Institute of Technology, Pasadena, CA, USA.
Space Sci Rev. 2020 Nov 3;216(8). doi: 10.1007/s11214-020-00739-x. eCollection 2020 Dec.
The Mars 2020 Perseverance rover landing site is located within Jezero crater, a ∼ 50 km diameter impact crater interpreted to be a Noachian-aged lake basin inside the western edge of the Isidis impact structure. Jezero hosts remnants of a fluvial delta, inlet and outlet valleys, and infill deposits containing diverse carbonate, mafic, and hydrated minerals. Prior to the launch of the Mars 2020 mission, members of the Science Team collaborated to produce a photogeologic map of the Perseverance landing site in Jezero crater. Mapping was performed at a 1:5000 digital map scale using a 25 cm/pixel High Resolution Imaging Science Experiment (HiRISE) orthoimage mosaic base map and a 1 m/pixel HiRISE stereo digital terrain model. Mapped bedrock and surficial units were distinguished by differences in relative brightness, tone, topography, surface texture, and apparent roughness. Mapped bedrock units are generally consistent with those identified in previously published mapping efforts, but this study's map includes the distribution of surficial deposits and sub-units of the Jezero delta at a higher level of detail than previous studies. This study considers four possible unit correlations to explain the relative age relationships of major units within the map area. Unit correlations include previously published interpretations as well as those that consider more complex interfingering relationships and alternative relative age relationships. The photogeologic map presented here is the foundation for scientific hypothesis development and strategic planning for Perseverance's exploration of Jezero crater.
“火星2020毅力号”探测器的着陆点位于杰泽罗陨石坑内，这是一个直径约50公里的撞击坑，被认为是伊希地撞击构造西边缘内诺亚纪时期的湖盆。杰泽罗有河流三角洲、进出山谷的遗迹，以及含有各种碳酸盐、镁铁质和水合矿物的填充沉积物。在“火星2020”任务发射之前，科学团队成员合作制作了杰泽罗陨石坑内毅力号着陆点的摄影地质图。绘图以1:5000的数字地图比例进行，使用25厘米/像素的高分辨率成像科学实验（HiRISE）正射影像镶嵌底图和1米/像素的HiRISE立体数字地形模型。绘制的基岩和地表单元通过相对亮度、色调、地形、表面纹理和表观粗糙度的差异来区分。绘制的基岩单元通常与之前发表的测绘工作中确定的单元一致，但本研究的地图包括了杰泽罗三角洲地表沉积物和亚单元的分布，其详细程度高于以往研究。本研究考虑了四种可能的单元相关性，以解释地图区域内主要单元的相对年龄关系。单元相关性包括之前发表的解释，以及那些考虑更复杂的交错关系和替代相对年龄关系的解释。这里展示的摄影地质图是为毅力号探索杰泽罗陨石坑进行科学假设开发和战略规划的基础。
