{
 "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": "Conway Reef", "series": "Plates", "artist": "Kenny Lienhard", "year": 2026, "plate": "43 of 52", "palette": "opal"},
 "plate": {"name": "Conway Reef", "code": "CR", "model": "PB2002 (Bird 2003)", "class": "micro", "area_km2": 144456, "centroid_lat_lon": [-19.209, 174.754], "ocean_share": 1.0, "land_share": 0.0},
 "motion": {"frame": "no-net-rotation", "euler_pole_lat_lon": [-20.5931, 170.8741], "rotation_deg_per_million_years": 3.88845, "speed_mm_per_year_at_centroid": 29.42, "heading_deg_at_centroid": 338.6, "speed_range_mm_per_year": [17.58, 48.6], "the_artwork_drifts": "-29.42 mm a year along its cut, one frame of rock every 19636 years"},
 "cover": {"slope and ridge": 0.6834, "deep ocean": 0.3164, "shelf sea": 0.0002},
 "palette_from": ["ocean", "deep ocean", "shallow sea"],
 "era": null,
 "past": {"account": "The past. Conway Reef is open ocean, mostly two to three kilometres deep, and the ice age barely touched it. About 20,000 years ago the sea stood more than 100 metres lower, and the reef that gives the plate its name stood dry as a small limestone island until the rising sea drowned it again as the ice sheets melted. The water was a degree or more cooler, and the nearest sea ice lay about 4,000 kilometres to the south.", "source": "Lambeck et al. 2014, PNAS 111:15296; Dickinson 2009, GSA Today 19:4; Paul et al. 2021, Climate of the Past 17:805; Tierney et al. 2020, Nature 584:569; Lhardy et al. 2021, Climate of the Past 17:1139; Bird 2003, Geochemistry Geophysics Geosystems 4:1027; ETOPO 2022, NOAA NCEI"},
 "history": [{"years_ago": 12000000, "range_years_ago": [12000000, 8000000], "what": "The North Fiji Basin, where this small plate lies, began to open.", "source": "Crameri et al. 2020, Nature Communications 11:3750, doi:10.1038/s41467-020-17522-9 (SZI Database entries); Schellart, Lister and Toy 2006, Earth-Science Reviews 76:191, doi:10.1016/j.earscirev.2006.01.002"}],
 "outline_lon_lat": [[[174.88, -16.87], [174.5, -16.56], [173.9, -16.85], [173.88, -17.16], [173.74, -17.49], [173.66, -17.68], [173.55, -17.96], [173.41, -18.24], [173.25, -18.53], [173.43, -18.52], [173.45, -18.77], [173.45, -19.0], [173.44, -19.22], [173.43, -19.43], [173.4, -19.66], [173.36, -19.89], [173.34, -20.09], [173.35, -20.38], [173.38, -20.62], [173.38, -20.84], [173.38, -20.99], [173.38, -21.14], [174.12, -21.15], [174.12, -21.36], [174.11, -21.58], [174.09, -21.84], [174.06, -22.24], [174.03, -22.49], [174.58, -22.17], [175.23, -21.75], [175.73, -21.42], [176.12, -21.17], [175.83, -20.63], [175.59, -20.19], [175.57, -19.98], [175.56, -19.75], [175.77, -19.55], [175.84, -19.45], [175.88, -19.33], [175.9, -19.16], [175.92, -19.08], [175.97, -19.02], [176.06, -18.89], [176.14, -18.73], [176.21, -18.61], [176.22, -18.32], [176.24, -18.24], [176.3, -18.14], [176.34, -18.04], [176.34, -17.82], [175.97, -17.8], [175.99, -17.54], [176.04, -17.24], [176.06, -17.09], [176.11, -16.97], [176.15, -16.82], [176.18, -16.67], [176.18, -16.55], [175.89, -16.56], [175.61, -16.59], [175.49, -16.62], [175.38, -16.63], [175.23, -16.74], [175.11, -16.75], [174.88, -16.87]]],
 "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"
}