What is meant by the principle of original horizontality?
Regional SpecificsThe 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?
Regional SpecificsQuarrying 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?
Regional SpecificsUnderground 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?
Regional SpecificsShaleShale 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?
Regional Specifics102 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?
Regional SpecificsCrystal 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,