10.1029-2018JE005826Figure211460010.pptx

(a) The melt distribution of the giant impact event. Colored sections represent the molten material; gray sections represent unmolten material (melt fraction of 0). The contours represent the melt fraction with 0.1 and 0.25. Point a and b indicates the boundary of the molten and unmolten material of the new crust. The radial distance is ~900 km for point a and ~1,600 km for point b from the impact site. The material of the new crust from point a to b is not molten. The complete molten material (melt fraction ~1.0) is located around the boundary of the basin, less than 0.1% of the total of the melt volume. (b) The topographic map of the Moon (left-farside, right-nearside). The black line represents the outline of mare on the nearside. The red dashed and solid blue circle, with a radius of 900 and 1,600 km, represents the boundaries of the molten and unmolten material of the new crust in A (point a and b), respectively; the black dashed line represents the boundary of final basin from the modeling. The star on the nearside represents the impact site.