How are fault lines formed?
GeologyA fault is formed in the Earth’s crust as a brittle response to stress. Generally, the movement of the tectonic plates provides the stress, and rocks at the surface break in response to this. Faults have no particular length scale. Do tectonic plates create fault lines? Boundaries between tectonic plates are made up of a
In which areas of Pakistan major faults are found?
GeologyOther faults Main Karakoram Thrust. Riasi Thrust. Salt Range Thrust. Bannu Fault. Quetta-Chiltan Fault. Allah Bund Fault. Hoshab Fault. Makran Coastal Fault. Where are fault lines in Pakistan? The fault tracks northeast across Balochistan and then north-northeast into Afghanistan, runs just to the west of Kabul, and then northeastward across the right-lateral-slip Herat fault, up
What kind of crystals are clear?
GeologyWhat Is Clear Quartz? Facts about Quartz. Clear Quartz is the most recognized type of crystal and what most people envision when the thought “Crystal” comes to mind. It is also known as Crystal Quartz and Rock Crystal and it is a natural form of silicon dioxide. What type of crystal is clear? quartz Pure
What is meant by the principle of original horizontality?
GeologyThe principle of original horizontality states that layers of sediment are originally deposited horizontally under the action of gravity. It is a relative dating technique. The principle is important to the analysis of folded and tilted strata. What is the meaning of principle of original horizontality? The Law of Original Horizontality suggests that all rock
What are the disadvantages of limestone?
GeologyQuarrying Advantages Disadvantages Provides employment Regular blasting produces excessive noise and dust Supports the local economy Dust and extra vehicle pollution can lead to increased numbers of respiratory conditions, eg asthma Better local road system Increase in traffic, eg transport lorries What are the advantages of using limestone? Limestone and sandstone advantages Simple care and
How is halite mined?
GeologyUnderground Halite deposits are often mined by drilling wells into the salt layer, and bringing in hot water which quickly dissolves the salt into a brine. The brine is saturated with dissolved salt and is then pumped out. The brine evaporates and the remainder salt crystallizes and is harvested. Where can halite be mined? Halite
Which clastic sediment has the smallest grain size?
GeologyShaleShale has the smallest grain size. Shale is made mostly of clay-sized particles and hardened mud. When sediments settle out of calmer water, they form horizontal layers. Which type of clastic sediment has the smallest particle size? Clay is the category of clastic sediment with the smallest particle size. Which grains are smallest? Teff is
What is the viscosity of andesitic lava?
Geology102 to 107 Pa s102 to 107 Pa s, which is due to a wide range in phenocryst contents from 0 (phenocryst‐free andesitic melt) to ∼50 vol % (50 vol % rhyolitic melt + 50 vol % phenocrysts). Does andesitic lava have low viscosity? Siliceous Lava Flows – High viscosity andesitic and rhyolitic lava flows,
What is the crystal form of a mineral?
GeologyCrystal form refers to the geometric shape of mineral crystals. Crystal form is caused by the symmetrical, three-dimensional arrangement of atoms inside the mineral. Not all minerals form perfect visible crystal shapes. Some crystals are too small to see. What are the 6 crystal forms of minerals? The six crystal families are triclinic, monoclinic, orthorhombic,
What countries are in the Great Rift Valley?
GeologyIn Kenya, Uganda and the fringes of South Sudan, the Great Rift runs along two separate branches that are joined to each other only at their southern end, in Southern Tanzania along its border with Zambia. The two branches are called the Western Rift Valley and the Eastern Rift Valley. How many countries are in