Reducing flood damage is a complex task that requires multidisciplinary understanding of the earth sciences and civil engineering. In addressing this task the U.S. Army Corps of Engineers employs its expertise in hydrology, hydraulics, and geotechnical and structural engineering. Dams, levees, and other river-training works must be sized to local conditions; geotechnical theories and applications ... Full description.

In this activity, students use a field outcrop map to construct an interpretive geologic map and geologic cross-section of the same area. Data sheets, an answer sheet, and supplemental maps for the teacher are inlcuded. Full description.

This site has directions for a classroom activity in which students plot locations of major Southern California earthquakes on a map. A table listing major earthquakes, when they occurred, their locations and their magnitudes is included. There is also a set of questions for the students to answer once they have plotted the earthquake data on their map. This site is in PDF format. Full description.

After a teacher led discussion (some background provided), students will break into groups and recreate global maps at four different points in earth's history. By completing this exploration activity, the learner will: recognize that continents of the western hemisphere "fit" together, create a model that demonstrates the similarity of the continents, identify the major tectonic plates, and calculate ... Full description.

This is a general structural geology page where some pictures and definitions of fault blocks can be found. Full description.

In this activity, students plot the locations of earthquakes on a world map for a week or more, and examine their distribution in relationship to Earth's plate boundaries. It includes a bilingual vocabulary list (Spanish/English). Full description.

This site by a Norwegian researcher features descriptions of marine geological formations: pockmarks, mud volcanoes, deep-water coral reefs, and gas hydrates. Using ROV technology, he has taken photos of these deep seafloor features, and compares them to geological structures seen on land, and even on the moon. Full description.

This search tool provides descriptions and availability information for geologic maps of the 50 States, the District of Columbia, and Puerto Rico. These geologic maps are published by a variety of organizations, including State geologic agencies, the U.S. Geological Survey (USGS), universities, and private companies. Title, date, scale, publisher, series (where applicable), and basic ordering information ... Full description.

This guide provides information about caves in the United States which are open to the public. The directory is arranged by state and provides locations, operating hours, and telephone numbers for all caves in the U. S. which are developed for public access. Other materials include tips for visitors, a tutorial on cave photography, and a link to the "Virtual Cave," which includes maps and photos of ... Full description.

This brief description of the rock cycle is for younger students. They will learn about the processes by which the three types of rocks can be changed into one another. Full description.