![]() Time slices include at least two maps from each period (except Silurian), including 4 Jurassic, 6 Cretaceous and 8 Cenozoic with 1 glacial maximum mapįor details on the series, to see map samples, and for a list of maps click here.16 pages of references – the sources of data used in constructing the maps.We also have a live countdown that monitors the days leading up to April 20 in your local timezone. 6 text files include map explanations and keys, construction information This website makes it easy to know when its 4:20 by tracking over 30 time zones around the world in real-time.2 terrane maps, 16 labeled plate-tectonic maps, and 15 facies maps (at least 1 per geologic period).Each time slice includes a full-resolution JPG file and ~1/4 resolution JPG A time slice is the representation of a linear referencing system (LRS) feature during a specific time range. Map projection is Transverse Mercator with 100 degrees W as the central meridian (same projection used on GSA’s Geologic Map of North America). Time-slice contour maps of the crustal thickness proxy, i.e., ln(La/Yb), with the sites of representative PCDs, demonstrating the changing thickness of. State and Province boundaries are shown.Maps include coverage of the Arctic, Caribbean, Central America, parts of Western and Northern Europe, NW Africa, and Northern South America.Drag the legend on the map to set its position or resize it. Change the color for all subdivisions in a group by clicking on it. File formats: Photoshop® layered docs (5-6 layers/map) and JPG Add a title for the maps legend and choose a label for each color group.Date Range: 540 Ma to Present plus 4 Precambrian maps. ![]()
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