Facts about Elephant Rock, Iceland
This basalt sea-cliff on the island of Heimaey in Southern Iceland looks just like a giant elephant or wooly mammoth dipping its trunk into the […]
Structural geology
Igneous Textures: What Can They Tell Us?
Identify and describe the six major igneous textures. The term igneous exture is used to describe the overall appearance of a rock based on the […]
Plate Tectonics; Mountain Building; Continental Growth/Movements
As the 20th Century began, major unsolved problems in understanding the Earth’s geology included the distribution of rock type by age and by structural state, […]
Geologic Time
When one mentions “geologic time” to a geoscientist, that person immediately starts to think in terms of millions to billions of years. The Earth organized […]
Detecting natural fractures with ground penetrating radar and airborne night-thermal infrared imagery around Old Faithful Geyser, Yellowstone National Park, USA
Introduction Old Faithful Geyser is located in the Upper Geyser Basin (UGB) of Yellowstone National Park (Fig. 1, Fig. 2). Many of the approximately 4 million […]
3D mechanical stratigraphy
3D mechanical stratigraphy of a deformed multi-layer: Linking sedimentaryarchitecture and strain partitioning Stratigraphic influence on structural style and strain distribution in deformed sedimentary sequences is […]
Cinder Cones
Describe the formation, size, and composition of cinder cones. As the name suggests, cinder cones (also called scoria cones) are built from ejected lava fragments […]
Determining the Size of an Earthquake
Distinguish between intensity scales and magnitude scales. Seismologists use a variety of methods to determine two fundamentally different measures that describe the size of an […]
Weathering rock
Define weathering and distinguish between the two main categories of weathering. Weathering involves the physical breakdown (disintegration) and chemical alteration (decomposition) of rock at or […]
The Theory of Plate Tectonics
List the major differences between Earth’s lithosphere and asthenosphere and explain the importance of each in the plate tectonics theory. Following World War II, oceanographers […]