The measurable, definable properties and features of the earth.
Interior of the Earth [ More info] General Interest Publication on the structure of the planet Earth including the crust, the mantle, and the core with drawings to scale on the cover and a table listing the thickness of the parts.
Monitoring the Earth's dynamic magnetic field [ More info] Describes the reasons why USGS monitors Earth's magnetic field and the history of that monitoring effort.
Precambrian Time - The Story of the Early Earth [ More info] Explains what we know about the early history of the earth and how we study the deposits formed during that time to understand the formation of the earth and life.
The Earth's crust [ More info] Information on the Earth's crust with a contour map of the thickness plus links to a global crustal database, a global crustal model - CRUST 5.1, and regional crustal models.
This dynamic planet: World map of volcanoes, earthquakes, impact craters, and plate tectonics [ More info] Online world map with booklet (PDF format) giving an account of plate tectonics, volcanology, earthquake activity, and impact craters.
What on Earth is plate tectonics? [ More info] Discussion and diagrams on plate tectonics and the structure of the Earth for beginners with link to a detailed version: This Dynamic Earth for more information.
2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA) [ More info] We estimate mean volumes of 896 million barrels of oil and about 53 trillion cubic feet of nonassociated natural gas in conventional, undiscovered accumulations within this area, a reduction of our 2002 estimate due to new geologic information.
3D Elevation Program: summary for Nebraska [ More info] Summarizes the expected value over the next decade of the 3D Elevation Program for this state.
3D Elevation Program: summary for Vermont [ More info] Summarizes the expected value over the next decade of the 3D Elevation Program for this state.
A climate trend analysis of Chad [ More info] Long-term reduction in rainfall and increasing temperature threaten Chad's future food production prospects; combined with rapid population growth and zones of substantial conflict, increasing numbers of people will be at risk.
Alphabetical Index of Topics
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