Note that state lines are not deformed, a common method of showing palinspastic restorations in many publication rather state-county lines are minimized until the time slice at which the terrane arrives at its present location for a given area. apart.Īll of the features on the maps are palinspastically restored - that is, the positions of various terranes and blocks are shown in their presumed location during a given time slice.
between maps and only two time slices are more than 20 m.
420 TIMESLICE WORLD MAP SERIES
The 36 time slices mark a reduction from the 90+ maps in the original North American series but this strategy was considered to be a necessity of time as most maps in the new series took 40 – 60 hours each to complete. Particular attention was paid to making sure that tectonic and geologic events between adjacent time slices made geologic, geographic (space issues), and tectonic sense. The maps were compiled from many sources (see references) and are based on many different tectonic models numerous compromises between varying models were necessary, especially models of terrane accretion. Their detail and image size make them some of my most detailed maps. The maps represent a complete redo of the previous North American series map size and resolution were increased by nearly twice and new data from the geologic literature were used in map preparation. The Key-Time-slice series of paleogeographic maps for North America was completed in June, 2013.
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