Search results
Results From The WOW.Com Content Network
The top plate illustrates the tectonic setting for the sediments of Pennsylvania. This section is characterized by the metamorphic rocks that provide much of the bedrock for this area. The oldest exposed rocks in Pennsylvania are found here and consist of the Baltimore Gneiss. [8] These rocks have a complex history and a vast array of different ...
The Pennsylvania Geological Survey, or Bureau of Topographic and Geologic Survey (BTGS), is a geological survey enacted by the Pennsylvania General Assembly "to serve the citizens of Pennsylvania by collecting, preserving, and disseminating impartial information on the Commonwealth's geology, geologic resources, and topography in order to contribute to the understanding, wise use, and ...
The results of this observational study showed that there was a statistically significant decline in water transparency in Lake Lacawac over the twenty-six years of data that they collected, meaning that the influx of terrestrially-derived dissolved organic matter has been affecting the water quality, which has in turn been affecting food webs ...
Pennsylvania Spatial Data Access (PASDA), [4] the official public geospatial data clearinghouse for the Commonwealth of Pennsylvania marked its 18th year in 2014. PASDA, which has grown from a small website offering 35 data sets in 1996 to the expansive user-centered data clearinghouse that it is today, has become a staple of the GIS community in Pennsylvania.
Following is a list of dams and reservoirs in Pennsylvania. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
In Pennsylvania, a study conducted in 2014 based on data on the distribution of fracking well activity and the roadway type in the state estimated that the road reconstruction costs caused by additional heavy truck traffic from Marcellus Shale natural gas development in 2011 were about $13,000–$23,000 per well for all state roadway types. [176]
The Department of Health and Human Services said the data was "insufficient" to determine whether the current recommended level of 0.7 milligrams of fluoride per liter of water also had an effect ...
East Branch Chillisquaque Creek is a tributary of Chillisquaque Creek in Columbia County and Montour County in Pennsylvania, United States.It is approximately 6.2 miles (10.0 km) long and flows through Madison Township, Columbia County and Derry Township, Montour County. [1]