Northern Guam geospatial information server
About this map:
This map shows the Pago-Adelup fault, a major structural feature that separates the limestone plateau northern Guam from the mountainous volcanic terrain of southern Guam. The data were extracted from the detailed geologic map of Guam, produced by Siegrist, H.G. and Reagan, M. (2008) as a reinterpretation and revision of the Geologic Map of Guam by Tracey et al. (1964).