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Filters: Tags: geologic age (X) > Types: OGC WFS Layer (X)

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This assessment is based on review of available literature and examination of historical air photos that date to the 1940’s, topography developed from LiDAR (light detection and ranging) data obtained in 2007, limited field mapping of beach, dune and fluvial stratigraphy, discussions with other coastal dune geomorphologists, and reconnaissance site visits to the project area and environs. Radiocarbon dating drew from the work of Tushingham et al. (no date), Meyer et al. (2011), Bicknell and Austin (1991) and unpublished data developed by park staff. Optically stimulated luminescence (OSL) dating drew from work by Michaela Spiske (University of Munich, unpublished data 2013) and our resources using funding provided...
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These digital maps are a reformulation of previously published maps, primarily maps of states. The reformulation gives all the maps the same structure and format, allowing them to be combined into regional maps. The associated data tables have information about age and lithology of the map units, also in a standard format.


    map background search result map search result map Age Estimation for Landforms at Tolowa Dunes State Park - Report Preliminary integrated geologic databases for the United States - Western States: California, Nevada, Arizona, and Washington Age Estimation for Landforms at Tolowa Dunes State Park - Report Preliminary integrated geologic databases for the United States - Western States: California, Nevada, Arizona, and Washington