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A pack rat midden is a debris pile constructed by a woodrat. A midden may preserve the materials incorporated into it for up to 50,000 years. [citation needed] These midden piles may be analyzed to reconstruct their original environment, and comparisons between middens allow a record of vegetative and climate change to be built.
As the guy who started packrat midden, I don't mind. - Banyan Tree 14:22, 29 December 2006 (UTC) I think that this article should also be part of the climate change article. I agree that Pack Rat and midden should be merged, and I wouldnt mind if human pack rat were combined also. Macroqueen 17:16, 24 June 2007 (UTC)
The bushy-tailed woodrat, or packrat (Neotoma cinerea) is a species of rodent in the family Cricetidae found in Canada and the United States. [2] Its natural habitats are boreal forests , temperate forests, dry savanna , temperate shrubland , and temperate grassland .
The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.
Georeferenced map images are available from the USGS as digital raster graphics (DRGs) in addition to digital data sets based on USGS maps, notably digital line graphs (DLGs) and digital elevation models (DEMs). In 2015, the USGS unveiled the topoView website, a new way to view their entire digitized collection of over 178,000 maps from 1884 to ...
The National Elevation Dataset (NED) consists of high precision topography or ground surface elevation data (digital elevation model) for the United States. It was maintained by the USGS and all the data is in the public domain. Since the 3D Elevation Program came online, the NED was subsumed [1] into The National Map as one of its layers of ...
PROJ (formerly PROJ.4) is a library for performing conversions between cartographic projections. The library is based on the work of Gerald Evenden at the United States Geological Survey (USGS), [ 2 ] but since 2019-11-26 is an Open Source Geospatial Foundation (OSGeo) project maintained by the PROJ Project Steering Committee (PSC).
Stereophoto from the 1871 expedition. Photo of Maiman, a Mohave Indian interpreter and guide, by Timothy H. O'Sullivan. The Wheeler Survey, carried out in 1872-1879, was one of the "Four Great Surveys" conducted by the United States government after the Civil War primarily to document the geology and natural resources of the American West.