on April 16, 2022
What is a stratigraphic profile?
GeologyWhat is the difference between a stratigraphic column and a soil profile? The succession of soil layers, from the surface to bedrock, is referred to as the soil profile. Stratigraphy deals with the origin (how did it get there?), the composition (what’s in the soil?), and the succession (what came after what?) of soil layers.
on April 16, 2022
Why are trees affected by soil creep?
GeologyTrees growing on a slope usually have trunks with sharp curves at their bases. Older trees are bent more than younger ones. All this occurs because the upper layers of soil and weathered rock move gradually down the slope while deeper layers remain relatively fixed. This tips inanimate objects such as power poles. What are
on April 16, 2022
What do surface miners do?
GeologySurface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through … What do you mean
on April 16, 2022
Why did Steno propose what eventually became known as the principle of original horizontality?
GeologyWhat proposed the law of horizontality? It is a relative dating technique. The principle is important to the analysis of folded and tilted strata. It was first proposed by the Danish geological pioneer Nicholas Steno (1638–1686). What does law of original horizontality mean? The Law of Original Horizontality suggests that all rock layers are originally
on April 16, 2022
How is sandstone used in everyday life?
GeologySandstone is used in the building of homes and outdoor structures, as well as gates or as support for columns on porches. It can be used to build outdoor ovens, fireplaces, patios or porches, retaining walls and walkways. You can find outdoor furniture, such as garden benches or patio tables, made of the material. How
on April 16, 2022
Is San Jose on a fault line?
GeologyIs San Jose near a fault line? San Jose is the largest city on the north San Andreas Fault Line. Close by the city is the Calaveras fault, which winds through eastern Santa Clara county. It is one of the fastest creeping fault segments in the San Francisco Bay Region. What are the fault lines
on April 16, 2022
How are P and S waves generated?
GeologyBoth P and S waves travel outward from an earthquake focus inside the earth. The waves are often seen as separate arrivals recorded on seismographs at large distances from the earthquake. The direct P wave arrives first because its path is through the higher speed, dense rocks deeper in the earth. How are S waves
on April 16, 2022
What is volcanic rock dust?
GeologyVolcanic Rock Dust is an organic fertilizer consisting of crushed basalt, a volcanic rock, which contains minerals and trace elements which have been ground into a fine dust. What is volcanic rock dust used for? Volcanic Dust is a Bio-Dynamic soil activator which is great for mineralizing and softening soils. It helps give fruit and
on April 16, 2022
Why is volcanic rock black?
GeologyThe shade of blue of this rock is closer to gun-metal and is probably caused by the refractive index of the glass. Eventually, with exposure to the elements, the color of the rock turns to black. As older lava flows weather, the minerals in the rocks oxidize and often turn to clay minerals. Why is
on April 16, 2022
What are examples of mass movement?
GeologyMass wasting is the movement of rock and soil down slope under the influence of gravity. Rock falls, slumps, and debris flows are all examples of mass wasting. What are 4 examples of mass movement? There are four different types of mass movement: Rockfall. Bits of rock fall off the cliff face, usually due to