Northern Guam geospatial information server
About this map:
This map shows the extent of Holocene beach deposits along the coast of northern Guam. The geospatial information was extracted from the detailed geologic map of Guam, produced by Guam by Siegrist, H.G. and Reagan, M. (2008) as a reinterpretation and revision of the Geologic Map of Guam by Tracey et al. (1964).