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Layer: Geologic overprints (ID:1)
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Layer: Bathymetry (ID:2)
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Layer: Cities (ID:3)
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Layer: Political boundaries (ID:4)
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Layer: Drainage (ID:5)
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Layer: Volcanoes (ID:7)
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Layer: Calderas (ID:8)
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Layer: Glaciation extents (ID:9)
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Layer: Impact structures > 10 km in diameter (ID:10)
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Layer: Impact structures < 10km in diameter (ID:11)
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Layer: Diapirs (ID:12)
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Layer: Areas of abundant diapiric structures (ID:13)
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Layer: Diapiric structure trends (ID:14)
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Layer: Small bodies of unusual igneous rocks (ID:15)
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Layer: Polymetallic sulfide deposits (ID:16)
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Layer: Hydrothermal vents (ID:17)
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Layer: Gas/oil seep (ID:18)
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Layer: Gas/fluid seep (ID:19)
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Layer: Rock in seafloor sample (ID:20)
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Layer: Maganiferous deposits (ID:21)
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Layer: Phosphate nodules or pavement (ID:22)
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Layer: Dikes and sills (ID:23)
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Layer: Geologic contacts (ID:24)
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Layer: Faults (ID:25)
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Layer: Special submarine line features (ID:26)
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Layer: Geologic units (ID:27)
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