Paleogeographic Maps, a Status Report

doi:10.1007/978-94-015-6861-6_11

Paleogeographic Maps, a Status Report

Published 1990 · W. Hay, C. Wold, C. A. Shaw

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Abstract

The factors which most critically affect paleogeographic maps are: 1) the spatial resolution of the data base; 2) the map projection; 3) the initial fits and rotations of the major continental blocks; 4) the number of plates rotated independently for the reconstruction; 5) the number of terranes shown; 6) palinspastic reconstruction of continental margins and interiors, and palinspastic reconstruction of terranes; and 7) the reference frame. Because refinements arecontinually being made as new data becomes available and incorporated into the reconstructions, it is impossible to set specific rules to be followed. Most importantly, text accompanying the reconstructions should describe the factors listed above. The basis for paleogeographic features, such as the shoreline, topography and paleobathymetry should also be explicitly stated. The sea level position used to plot the shoreline, whether at maximum transgression, some intermediate or average position, or at regression, should be clearly stated.

Study Snapshot

Key takeawayPaleogeographic maps are critically affected by spatial resolution, map projection, plate rotations, terranes shown, palinspastic reconstruction, and reference frame, with text explaining these factors and providing context for features.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.