on March 31, 2022
Can you touch Cinnabar?
GeologyIf you touch cinnabar – it’s safe. If you touch it 564 times – it’s safe. If you sleep with it for 5 months – it may be slightly dangerous. What happens if you touch cinnabar? Because of its mercury content, cinnabar can be toxic to human beings. Overexposure to mercury, mercurialism, was seen as
on March 31, 2022
What do rock layers tell us about the environment?
GeologySedimentary rocks tell us about past environments at Earth’s surface. Because of this, they are the primary story-tellers of past climate, life, and major events at Earth’s surface. Each type of environment has particular processes that occur in it that cause a particular type of sediment to be deposited there. How can a rock tell
on March 31, 2022
How do you explain weathering?
GeologyWeathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. What is weathering mean
on March 31, 2022
How does the theory of plate tectonics related to engineering?
GeologyEngineering Connection For construction projects, especially those near active faults and coastlines, engineers consider the effects of plate tectonics. If one tectonic plate suddenly slips with respect to another plate, the release of energy can cause earthquakes that impact structures. What is plate tectonics in civil engineering? This sliding of earth mass take place in
on March 31, 2022
What are the three most common types of mountain?
GeologyThere are three main types of mountains: fold mountains, fault-block mountains, and volcanic mountains. They get their names from how they were formed. Which are the 3 types of mountains? There are three types of mountains: … (i) Fold Mountains: Fold mountians are formed due to the collision of two textonic plates. … (ii) Block
on March 31, 2022
How do you get to the top of Mount Tamalpais?
GeologyHiking to the summit, starting from Stinson Beach. This hike totals about 15 miles, starting at Stinson Beach on the Dipsea Trail, then up the beautiful Steep Ravine Trail to Pantoll Campground, and following the Old Stage Road up to the summit and back, finally returning to Stinson Beach via the Matt Davis Trail. How
on March 31, 2022
What were the plants in the Tertiary Period?
GeologyThe Paleocene epoch marks the beginning of the Cenozoic era and the Tertiary period. Dense forests grow in the warm, damp, and temperate climate. Ferns, horsetails, and shrubby flowering plants make up the underbrush, while sequoias, pines, and palms grow tall, some to towering heights. What plants and animals lived in the Tertiary Period? The
on March 31, 2022
What are rock properties?
GeologyRock physical properties include density, porosity, and permeability, etc. Rock mechanical properties mainly include elastic modulus, Poisson’s ratio, and rock strength. These parameters can be obtained by lab experiments of core samples or by in-situ tests. What can obsidian be used for? Obsidian was used to make knives, arrowheads, spear points, scrapers, and many other
on March 31, 2022
Is plagioclase feldspar a silicate?
GeologyPlagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series. Is plagioclase feldspar silicate or non silicate? The vast majority of the minerals that make
on March 31, 2022
What is the Tertiary period known for?
GeologyThe Tertiary witnessed the dramatic evolutionary expansion of not only mammals but also flowering plants, insects, birds, corals, deep-sea organisms, marine plankton, and mollusks (especially clams and snails), among many other groups. What major events occurred during the Tertiary Period? The Tertiary Period began abruptly when a meteorite slammed into the earth, leading to a