Which rock layer is the oldest answer?
The law of superposition states that rock strata (layers) farthest from the ground surface are the oldest (formed first) and rock strata (layers) closest to the ground surface are the youngest (formed most recently).
How is the principle of original horizontality described Brainly?
The 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.
Which layer describe the law of horizontal continuity?
Answer. The Law of Original Horizontality suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed. This allows us to infer that something must have happened to the rocks to make them tilted. This includes mountain building events, earthquakes, and faulting.
What is the law of horizontality say?
The LAW OF ORIGINAL HORIZONTALITY states that a series of sedimentary layers will generally be deposited in horizontal layers. You might think of this like snow falling one day when it is not windy, and it blanketing the ground.
How will quarrying affect the rock layer?
The most obvious engineering impact of quarrying is a change in geomorphology and conversion of land use, with the associated change in visual scene. This major impact may be accompa- nied by loss of habitat, noise, dust, vibrations, chemical spills, erosion, sedimentation, and dereliction of the mined site.
Why do miners get paid so much?
It’s their professionalism in the work place that has made Australian miners some of the best paid in the world. It was Australian companies that first recognised the value of the miner and started to pay them accordingly.
What is the biggest health risk of mining?
Miners are at risk of developing a lung disease called pneumoconiosis because of their exposure to airborne respirable dust—extra fine particles that can be inhaled into lung tissue. Miners have an increased risk of dying from lung cancer when exposed to exhaust from diesel engines for five or more years.
What are the dangers of the gold rush?
Health problems of gold miners who worked underground include decreased life expectancy; increased frequency of cancer of the trachea, bronchus, lung, stomach, and liver; increased frequency of pulmonary tuberculosis (PTB), silicosis, and pleural diseases; increased frequency of insect-borne diseases, such as malaria …
Why is mining bad for your health?
Mining damages health in many ways: Dust, chemical spills, harmful fumes, heavy metals and radiation can poison workers and cause life-long health problems as well as allergic reactions and other immediate problems.