Geologic HistoryRead the layers. Order the events.
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3D graphics are not available in this browser. The lesson and the Reference Tables notes still work in the panel.
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Camera

Faces of the block
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Keys: 1 to 7 modes, Space play, comma and period step, R reset, N new block, S save image, P present, C controls, L learn, D light or dark, Esc close. Drag to turn, scroll or pinch to zoom.

What to try

    Values are rounded as printed in the Earth Science Reference Tables. For exact readings on a test, use the printed tables.