Salt diapirism, salt geometry and the flow of salt
Salt diapirism, salt geometry and the flow of salt Salt structures Salt volumes in the crust have for a long time been known to take on a variety of geometric … Read More
Category: Structural geology
Symbols used on topographic quadrangle maps produced by the U.S. Geological Survey.
Symbols used on topographic quadrangle maps produced by the U.S. Geological Survey. Control data and monuments Contours Boundaries Surface features Mines and caves Vegetation Glaciers and permanent snowfields Marine shoreline … Read More
Appalachian Mountains
This regional view shows the striking visual effect of the valley-and-ridge topography of the Appalachian Mountains as viewed from the International Space Station. The image shows more than 500 kilometers … Read More
Underground structures in karst
Characterization of karst The name “karst” is used for sedimentary rock mass, which is apparently influenced by leaching processes of its water-soluble components. Mainly limestone, dolomite and gypsum are the … Read More
Plate Tectonics
Ever since the first reasonably accurate world maps were constructed in the 1600s, people have proposed models to explain the origin of Earth’s mountain belts, continents, ocean basins, rifts, and … Read More
Interpreting Metamorphic Environments
Interpreting Metamorphic Environments Describe the temperature and pressure conditions associated with the following metamorphic facies: blueschist facies, hornfels facies, and zeolite facies. Geologists realized that groups of associated minerals could … Read More
Mud loggers descriptions of rocks
Properties of rock described by mud loggers Color It is recommended that colors of rock be described by mud loggers on wet samples under ten-powered magnification. The wet surface will … Read More
The Himalayas
The Himalayas The mountain-building episode that created the Himalayas began roughly 50 million years ago, when India began to collide with Asia. Prior to the breakup of Pangaea, India was … Read More
GLACIAL PROCESSES AND LANDFORMS
Glaciers are large ice masses that form on land areas that are cold enough and have enough snowfall to sustain them year after year. They form wherever the winter accumulation … Read More
The job of the Geologist in exploring for Oil and Gas
The geologist ‘s job is to observe, explore and scrupulously record any clue to the possible presence of hydrocarbons below ground. They attempt to reconstitute a scenario that may have … Read More