{
 "about": "The record of this Plate: the facts it is drawn from, kept inside the work. Plain JSON; the artwork does not read it. CC0 1.0, no rights reserved.",
 "work": {"title": "Altiplano", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "22 of 52", "palette": "basalt"},
 "plate": {"name": "Altiplano", "code": "AP", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 832153, "centroid_lat_lon": [-17.335, -69.441], "ocean_share": 0.1514, "land_share": 0.8486},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [-8.6176, -86.6102], "rotation_deg_per_million_years": 0.48136, "speed_mm_per_year_at_centroid": 17.29, "heading_deg_at_centroid": 25.4, "speed_range_mm_per_year": [11.71, 23.14], "the_artwork_drifts": "17.29 mm a year along its cut, one frame of rock every 22897 years"},
 "cover": {"bare rock": 0.2506, "tundra": 0.1503, "grassland": 0.1122, "forest": 0.1095, "desert": 0.0983, "rainforest": 0.078, "slope and ridge": 0.0767, "deep ocean": 0.0382, "ocean trench": 0.0201, "cropland": 0.0193, "shelf sea": 0.0164, "lakes and rivers": 0.0145, "boreal forest": 0.0101, "ice": 0.003, "towns": 0.002, "wetland": 0.0008},
 "palette_from": ["bare rock", "tundra", "grassland"],
 "era": {"name": "Lake Tauca", "what": "A great lake over the salt flats", "arrives_years_before_2026": [17076, 16576], "leaves_years_before_2026": [14576, 13576], "account": "The past. Lake Tauca: near the end of the ice age the rains over the central Altiplano grew to more than twice today’s, and from 17,076 to 16,576 years ago a shallow lake on the salt flats rose into one great lake over what are now the Salar de Uyuni, the Salar de Coipasa and Lake Poopó. At its height it covered about 52,000 square kilometres, a sixteenth of the plate, and was up to about 120 metres deep, the largest lake there in more than 100,000 years, while glaciers on the peaks around it held their ground or advanced again. It shrank in less than a thousand years, 14,576 to 13,576 years ago, and the basin dried; a smaller lake, Lake Coipasa, came back about 13,000 to 11,900 years ago. The pale beds, read here as the salt and the pale ground, turn halfway to the colour of water, all at once, and only across those spans.", "source": "Martin et al. 2018, Science Advances 4:eaar2514; Placzek et al. 2006, GSA Bulletin 118:515; Placzek et al. 2011, Quaternary Research 75:231; Nunnery et al. 2019, Quaternary Research 91:881; Martin et al. 2020, Quaternary Science Reviews 247:106542"},
 "history": [{"years_ago": 10000000, "range_years_ago": [10000000, 6000000], "what": "The high plateau of the central Andes rose by about 2.5 km in a few million years.", "source": "Garzione et al. 2008, Science 320:1304, doi:10.1126/science.1148615"}],
 "outline_lon_lat": [[[-75.42, -15.12], [-75.92, -15.74], [-75.29, -16.33], [-74.61, -16.82], [-73.95, -17.37], [-73.4, -17.75], [-72.74, -18.26], [-72.27, -18.72], [-71.75, -19.3], [-71.49, -19.81], [-71.36, -20.25], [-71.32, -20.76], [-71.25, -21.26], [-71.31, -21.97], [-70.68, -21.73], [-70.06, -21.5], [-66.12, -21.5], [-65.43, -21.47], [-64.73, -21.43], [-64.14, -21.4], [-63.55, -21.37], [-63.36, -20.76], [-63.18, -20.15], [-63.29, -19.51], [-63.4, -18.87], [-63.62, -18.38], [-63.84, -17.88], [-63.86, -17.46], [-64.58, -17.4], [-65.42, -17.11], [-65.8, -16.73], [-66.17, -16.35], [-66.7, -15.71], [-67.22, -15.08], [-67.42, -14.53], [-68.01, -14.03], [-68.59, -13.53], [-69.05, -13.39], [-69.5, -13.26], [-70.12, -13.04], [-70.75, -12.81], [-71.39, -12.58], [-72.04, -12.35], [-72.65, -12.42], [-73.27, -12.49], [-73.85, -13.18], [-74.43, -13.88], [-74.92, -14.5], [-75.42, -15.12]]],
 "sources": ["Plate outlines and motion: Bird, P. (2003). An updated digital model of plate boundaries. Geochemistry, Geophysics, Geosystems 4(3), 1027, doi:10.1029/2001GC000252. No-net-rotation frame computed from PB2002 alone.", "What covers each plate: ESA CCI Land Cover and Water Bodies, NOAA ETOPO 2022, Koppen-Geiger climate maps, NSIDC Sea Ice Index, on a 1 arc-minute grid."],
 "engine_sha256": "a7fbc03acc0fc9ba343881bb88ddaf2b7564564d8bc9cbed16e75e47e01fb3f2"
}