You can use this page to browse through all of the individual visualizations that have been cataloged in our digital library. You can also browse them as
Heller Home Page
Paul Heller is a Professor of Geology at the University of Wyoming, Laramie. Heller's home page links to his publications, class info, research statement, grant info, graduate student info, the UW Geology and Geophysics page, a subsiding basin experiment and a collection of sediment videos. The movies include clips on braided streams, bedload transport, ripples, plane bed lamination, turbidity currents, debris flow, sand sheet migration, graded beds, antidunes, sedimentation, and crystal growth and can be downloaded or viewed as QuickTime files.
Part of the supporting resources for the School of Earth Sciences dynamic earth module, the -Why Topography?- site discusses two models introduced in the 19th century that are still used to explain topographic variations. These models are the Pratt and Airy models of isostasy. In the Pratt model, high topography (relative to surroundings) is due to lower density whereas in the Airy model, high topography is due to thick crust.
Alan L. Jones Computer Programs: Seismic/Eruption
This site is the homepage of Alan L. Jones, of the State University of New York at Binghamton. Dr. Jones is interested in most earthquake-related topics, computer graphics, and computers in education. He has created various computer-based visualizations: Seismic/Eruption, Seismic Waves, AmaSeis, and Eqlocate. Seismic/Eruption is a program used to visualize seismicity and volcanic activity in space and time. The program displays earthquakes and volcanoes (data from the Smithsonian Institution Global Volcanism Program) and can show seismicity beneath the earth in three-dimensional and cross-sectional views. Programs can be downloaded from this page.
Why is the Land in South Louisiana Disappearing?
This USGS news press release describes how the combination of shoreline erosion, land subsidence, anthropogenic infuences, and sea level rise are resulting in the loss of land in South Louisiana. It also discusses the value of Louisiana's coastal wetlands in terms of oil and gas infrastructure, shipping, fisheries, hurricane protection, and waterfowl.
NOAA Photo Library: America's Coastlines
America has 95,000 miles of coastline. In this collection of images from NOAA, the user can view images of America's coasts and adjacent coastal regions. Images include early Nineteenth Century sketches and drawings and modern photographs of waves, rocky shores, sandy beaches, marshes, mangroves, seaside villages, and port cities.
The linked Flash animation illustrates the snowball earth hypothesis, that 900 million years ago, the entire terrestrial and oceanic earth surface was covered in ice. The animation demonstrates four proposed stages in snowball earth formation and destruction: normal, metastable, runaway snowball, and runaway greenhouse. This is part of a series of animations developed to help students visualize dynamic earth processes. The series is a component of a website that supports the textbook, Earth: Portrait of a Planet.
Waves, Beaches, and Coasts Animations
This site has links to 5 Flash animations about orbital motion in shallow water, seasonal cycle of a beach, longshore drift of sand, spits and baymouth bars, and coastal straightening. These visualizations are from Chapter 14 (Waves, Beaches, and Coasts) of the animations section of the Online Learning Center for the McGraw-Hill textbook Physical Geology, 9th edition (ISBN: 0072402466) by Plummer, McGeary and Carlson.
Graphical Representation of Geologic Time
This page has an illustration of the 4.5 billion year old Earth's time scale shown as a spiral with pictorial representations of both marine and terrestrial life. The text discusses how the age of the Earth is determined. The illustration is from the USGS General Interest Publication, Geologic Time by William L. Newman.
A Virtual Museum of Fossils
This collection of fossils contains 300 fossils of vertebrates and invertebrates and casts of fossils from national museums, universities and private collections. For each geologic time period, the website provides ancient world configurations, important ancient world physiographic features, ancient world locations where the fossils were found, and a comprehensive table with thumbnails of all fossils in the collection. A separate page is devoted to each specimen where multiple high resolution photographs are displayed. Reference skeletal reconstructions are shown where available from the literature.
American Field Guide: Relative Dating - Telling Time Using Fossils
This website integrates video footage and information with lesson plans and activities to teach students about the concept of relative dating. Students will graph a range chart for ammonites, determine the geologic age for several rocks, and determine which rocks will be most useful for oil companies looking to drill oil. This site contains lesson plans, student worksheets, discussion questions, and links for more information.