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Displaying 91 - 100 of a total of 103 items
July 13, 2017
Background
In areas prone to winter precipitation, transportation infrastructure must be able to quickly respond to snow and ice on roadways. Ice removal is a vital service in these communities. Deicing chemicals melt ice by lowering the temperature at which it melts. They can also prevent new ice...
May 19, 2017
The Sudbury region of Ontario is rich in metallic ores. Underground mining operations at the 15 active mines of Inco Ltd. and Falconbridge Ltd. in Sudbury currently produce 51,000 tons of ore per day [note: these figures are from the late 1990s], and five other mines within 500 km of Sudbury...
May 19, 2017
Hurricanes bring not only intense rainfall, but also high winds and flooding. This flooding is powered by the hurricane storm surge: a rise in coastal sea level caused by lowered barometric pressure and by wind blowing the ocean onto the land. The result is that waves and currents affect areas that...
May 19, 2017
The geologic and groundwater mapping products support county land use and planning decisions in this rapidly developing area. State water agencies, planners, developers, home owners, home buyers, real estate agents, and county officials use the maps to support an array of decisions regarding water...
May 19, 2017
In central Alabama, the Mississippian-age Fort Payne Chert is an important aquifer for domestic and municipal water supplies. Geologic mapping shows the extent of Fort Payne Chert exposure at the ground surface, which is the recharge area for the aquifer. Planning for protection of the groundwater...
May 19, 2017
Geologic maps provide critical information for coal resource exploration and for planners, regulators, decision makers, and the general public.
Defining the Problem
Despite Pennsylvania’s long history as a major coal producer, information on the coal geology (Fig. 1), remaining resources, and...
May 19, 2017
Although sinkhole development in susceptible areas cannot be completely prevented, policy makers and the public can use geologic maps that delineate karst features to develop strategies that can minimize or avoid property damage and personal injuries.
Defining the Problem
Sinkholes, which abound...
May 19, 2017
Geologic maps are being used in Kentucky to identify areas that have high potential for development of karst features, such as sinkholes and caves.
Defining the Problem
A new interstate highway, I-66, is being planned to pass through the vicinity of Mammoth Cave National Park (Fig. 1). It is one...
May 19, 2017
Surface and subsurface mapping of lahar and lahar runout deposits from Glacier Peak volcano has contributed important geologic information for land-management planning and emergency preparedness in the lower Skagit Valley.
Defining the Problem
Active volcanoes, such as Glacier Peak (Fig. 1), pose...
May 19, 2017
Landslide hazard maps based on geologic maps are a tool for local government officials, planners, developers, engineers, insurance companies, lending institutions, and landowners to assess the risk and take appropriate actions.
Defining the Problem
Damaging landslides occur even in vertically...
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