Irregular Mare Patch (IMP) Locations

Point shapefile of locations of Irregular Mare Patches (IMPs) 100 m or greater in dimension on the lunar nearside as identified by Braden, et al. (2014) using Lunar Reconnaissance Orbiter Camera (LROC) NAC images. IMPs are small, young topographic features with sharp, irregular morphology thought to be related to lunar volcanism. For more information, refer to: Braden, S. E., Stopar, J. D., Robinson, M. S., Lawrence, S. J., Van Der Bogert, C. H., & Hiesinger, H. (2014). Evidence for basaltic volcanism on the Moon within the past 100 million years. Nature Geoscience, 7(11), 787-791. doi:10.1038/ngeo2252

When citing this product, use the following reference: Braden, S. E., Stopar, J. D., Robinson, M. S., Lawrence, S. J., Van Der Bogert, C. H., & Hiesinger, H. (2014). Evidence for basaltic volcanism on the Moon within the past 100 million years. Nature Geoscience, 7(11), 787-791. https://doi.org/10.1038/ngeo2252

Point shapefiles are available in the IAU Moon 2000 Geographic Coordinate System in both the -180 180 and 0 to 360 longitude domains.

Longitude Domain	Product Name
      180		LUNAR_IMP_LOCATIONS_180
      360		LUNAR_IMP_LOCATIONS_360

Shapefile Field Descriptions:
NAME: Name of the Irregular Mare Patch
LENGTH: Length in meters
LAT: Latitude in degrees
LON: Longitude in degrees (0 to 360)
HOST_MARE: Mare where IMP is located
GEO_CONTEX: Notes on the geological context of the IMP
GRADE: IMP Grade (See Braden, et al. 2014)