Vendeur : Crossroads Books, Reno, NV, Etats-Unis
CD-ROM. Etat : Very Good. Hard thin plastic case with no cover. This map portrays the geology of Early Proterozoic rocks deposited along the southern margin of the Archean Superior craton during the Penokean orogenic cycle in northern Michigan and Wisconsin. It is a preliminary product of a study of the geologic and metallogenic evolution of that area intended to make available the compiled geology as the larger study progresses. The map has been compiled from a wealth of detailed and regional studies conducted largely by the USGS during the past 50 years. The data is structured and attributed so that users can easily query and modify maps and create a variety of derivative maps based on such features as lithology, age, tectonic setting, and stratigraphy. An GIS project with associated shape files is provided for viewing and querying of the map. Also provided are E00 files if further manipulation of the map is desired. ; U. S. Geological Survey Open File Report 99-547; 5.60 X 4.80 X 0.40 inches. N° de réf. du vendeur 11707
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