A tectonic map of the Orientale Basin on the Moon

All mapping was done in ArcGIS Pro 3.4 on a scale of 1:100,000 while increasing or decreasing the scale to make observations. The mapping was carried out on Moon LRO LROC WAC Global Morphology Mosaic 100m*, complimented with the Moon LRO LOLA - SELENE Kaguya TC DEM Merge 60N60S 59m**. Using these data sets, we mapped geologic structures including normal faults, thrust faults, the rims of the basin, cliffs within the basin, rilles, and a few ridges interpreted to be anticlines. All structures were mapped with polylines by manually placing vertices at locations where the structure has a change in orientation. These line features were exported as a shapefile. The mapping criteria are as follows:

1 Normal Faults: Linear borders of troughs (elongated negative relief structures), often straight map pattern.
2 Thrust Faults: Scarp bordering positive relief symmetric or asymmetric ridges, often sinuous map pattern.
3 Rim/Cliff: These are cliffs representing the rings of the basin, as indicated by a sharp decrease in elevation along a steep scarp.
4 Inferred Rim: Same as 3, lower mapping confidence.
5 Rilles: These are sinuous troughs that were mapped along their center.
6 Anticline: Positive relief ridges without clear surface breaks of scarps. They were mapped along the crest of the ridge.
7 Lineament: Unspecified lineament that were large enough to be recognized in the image data sets but no origin could be assigned.

*https://astrogeology.usgs.gov/search/map/moon_lro_lroc_wac_global_morphology_mosaic_100m
**https://astrogeology.usgs.gov/search/map/moon_lro_lola_selene_kaguya_tc_dem_merge_60n60s_59m

This map was presented as part of the 2025 Center for Undergraduate Research Opportunities (CURO) symposium at the University of Georgia on April 7th 2025: A tectonic map of the Orientale Basin on the Moon.

所有制图工作均基于ArcGIS Pro 3.4软件完成，初始比例尺设定为1:100000，并可根据观测需求调整比例尺大小。本研究以月球LRO LROC WAC全球地貌镶嵌图（100m分辨率，*）为基础底图，并辅以月球LRO LOLA-SELENE Kaguya TC DEM融合图（60N60S区域，59m分辨率，**）开展制图工作。依托上述数据集，本次制图共识别并标注了月球地质构造，包括正断层、逆断层、盆地环壁、盆地内部悬崖、月谷以及少数被解释为背斜的山脊。所有构造均以折线要素形式标注：手动在构造走向发生变化的点位添加节点，最终将这些线状要素导出为shapefile格式文件。本次制图的判定标准如下：
1. 正断层：以槽谷（延伸状负地形构造）的线性边界为标识，图面形态通常呈直线状。
2. 逆断层：以正地形对称或不对称山脊的陡崖边界为标识，图面形态通常呈蜿蜒状。
3. 环壁/悬崖：指构成盆地环带的悬崖，表现为沿陡峭陡崖存在显著的高程骤降。
4. 推断环壁：判定标准与第3项一致，但制图置信度较低。
5. 月谷：指蜿蜒状槽谷，本次制图沿其中心线进行标注。
6. 背斜：指无清晰地表陡崖断裂的正地形山脊，本次制图沿其山脊轴线进行标注。
7. 线性构造：指在影像数据集中可识别但无法确定成因的大型未分类线性构造。

*https://astrogeology.usgs.gov/search/map/moon_lro_lroc_wac_global_morphology_mosaic_100m
**https://astrogeology.usgs.gov/search/map/moon_lro_lola_selene_kaguya_tc_dem_merge_60n60s_59m

本幅制图成果于2025年4月7日在佐治亚大学举办的2025年度本科生研究机会中心（CURO）研讨会上进行展示，主题为《月球东方海盆地构造图》。