What is the hardness of sedimentary rocks?
GeologyUse the physical properties of the samples and Table 4. Physical Properties of Sedimentary Rocks to identify the sedimentary rocks.… Hardness (Softest to Hardest) Example Material 2 Gypsum 2.5 Fingernail, pure gold, silver, aluminum 3 Calcite, penny 4 Fluorite Is the sedimentary rock hard or soft? Generally, sedimentary rock is fairly soft and may break
How is tephra dangerous?
Geology questionsAt the time of eruption, lighter ash fall extended to greater distances than shown here. Falling ash, even in low concentrations, can disrupt human activities hundreds of miles downwind, and drifting clouds of fine ash can endanger jet aircraft thousands of miles away. How can tephra affect people? Tephra falls may affect eyes and respiratory
What are some effects of deposition?
GeologyThe environmental consequences of this process can be harmful or beneficial. On one side deposition is a cleansing of the air and a transport of additional nutrients to plants. On the other side, deposition of sulfur and nutrients may contribute to acidification and eutrophication of various ecosystems. What is effects of deposition? Deposition occurs when
How far is Simi Valley from the San Andreas Fault?
GeologyIs Simi Valley on the San Andreas Fault? Simi Valley is located in a seismically active region. The City is in proximity to several major regional faults systems, including the San Andreas and Santa Susana Faults, as seen in Figure 7.1-1 (Regional Faults). What cities are near the San Andreas Fault? The San Andreas runs
On which landmasses did Lystrosaurus live?
GeologyLystrosaurus fossils show that these creatures once lived on the landmasses of Africa, India, and Antarctica. land must have been connected for the animal to be on all three landmasses. They are known to be poor swimmers, which means they could not have swam from one landmass to another. Where can Lystrosaurus be found? Lystrosaurus
What substance determines whether magma is chunky or flowy?
GeologyThe higher the amount of silica in the magma, the higher is its viscosity. Viscosity is a liquid’s resistance to flow. Viscosity determines what the magma will do. What substance determine the viscosity of magma? Viscosity of Magmas Viscosity depends on primarily on the composition of the magma, and temperature. Higher SiO2 (silica) content magmas
How does soil creep work?
GeologySoil creep is a process operating at the granular scale. It happens on gentle slopes and is noticeable from the wavy surface it produces. Damp soil moves very slowly down the slope as the weight of water pushes it forwards. Rain splash may release soil grains that fall further downslope. How does soil creep occur?
Why is Ireland so rocky?
GeologyAt that time, Ireland was part of a shallow sea between two land masses near the equator. Shifting continents raised a part of seabed above the the sea level, which later became Ireland, and over hundreds of millions of years, the mud evolved into a tough, finely-grained limestone just below its surface. Why are there
Why is there more land mass in the northern hemisphere?
GeologyThe Northern hemisphere has 68% of the Earth’s land by area.. The Southern hemisphere has 32% of the Earth’s land by area. So about twice as much. The reason is the shape and movement of Earth’s tectonic plates has currently moved more of the original Pangea into the North. Does the Northern Hemisphere have more
What rock is the soft rock at High Force waterfall?
GeologyCarboniferous LimestoneCarboniferous Limestone, a softer rock which is more easily worn away by the waterfall. Which is the hard resistant rock that the High Force waterfall is made from? An example of a waterfall is High Force on the River Tees. At 22 metres it is the tallest waterfall in England. The River Tees tumbles