GeoNatShapes: a natural feature reference dataset for mapping and AI training

These data were compiled for the use of training natural feature machine learning (GeoAI) detection and delineation. The natural feature classes include the Geographic Names Information System (GNIS) feature types Basins, Bays, Bends, Craters, Gaps, Guts, Islands, Lakes, Ridges and Valleys, and are an areal representation of those GNIS point features. Features were produced using heads-up digitizing from 2018 to 2019 by Dr. Sam Arundel's team at the U.S. Geological Survey, Center of Excellence for Geospatial Information Science, Rolla, Missouri, USA, and Dr. Wenwen Li's team in the School of Geographical Sciences at Arizona State University, Tempe, Arizona, USA. Figure 1 shows the areal boundary (cyan) of Bachelor...

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Large impact crater in field at the south side of Quebrada Llanganuca. Peru, 1970.

Large impact crater (2.5 meters deep, 7 meters wide, and 11 meters long) in field at the south side of Quebrada Llanganuca, which was made by a huge block of rock or cluster of rocks hurled several hundred meters by the Huarascan debris avalanche. All rocks in or near crater are projectiles or fragments of projectiles from the avalanche. The two large rocks in the crater are about 2 1/2 meters in longest dimension. Peru. 1970. Published as figure 3 in U. S. Geological Survey. Circular 639. 1970.

Categories: Image; Tags: Peru, craters, photo print