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This variation in the thickness of Earth's crust demonstrates that it is not uniform and can vary significantly depending on location. It indicates the diverse geological processes that have occurred over time, such as the formation of mountain ranges or ocean basins, leading to this variability in crust thickness. Additionally, it highlights the dynamic nature of Earth's lithosphere.
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How much of gold is in the earths crust?
we dnt no :) We can only estimate. There are two types of crust: continental and oceanic. By volume the continental makes up about 70% and the oceanic makes up about 30%. Continental crust varies from 30 to 70km thick (with an avearge of 40km or so) and has an average density of 2.7 g/cm^3. Oceanic crust varies from 5 to 10km thick (with an average of 8km or so) and a density of about 3.3 g/cm^3. We can calculate the weighted average for the thickness of the total crust and get an estimate of about 30.4 km: 70% * 40 km + 30% * 8 km = 30.4km Calculate the volume of the total crust as the difference between the total volume of the Earth and the volume less the crust. Using an average radius on Earth of 6371km: 4/3 * pi * (6371 km^3 - 6340.6 km^3) = 1.54321 *10^10 km^3 = 1.54321 *10^19m^3 Remember that by volume this is 70% continental and 30% oceanic. Using this and the densities given above we can calculate the masses of each part of the crust: Continental: 1.54321 *10^19 m^3 * 70% * 2700 kg/m^3 = 2.92 * 10^22 kg Oceanic: 1.54321 *10^19 m^3 * 30% * 3300 kg/m^3 = 1.53 * 10^22 kg This gives a total bulk mass of the crust of around 4.45 * 10^22 kg. A quick search on the internet tells me that the average gold grade in the bulk crust is 0.0011 ppm gold. This equates to 0.0011 grams of gold per tonne of crust. So: 4.45 * 10^22 kg = 4.45 *10^19 tonnes 4.45 * 10^19 tonnes * 0.0011 g/tonne = 4.90 * 10^16 g of gold This works out to approximately 50 billion tonnes of gold, or at current gold prices (~$1200/ounce) approximately $2,000,000,000,000,000,000! (of course with that much gold available, I doubt gold prices would stay at $1200 an ounce). Of course the are all estimates, but the moral of the story is that if you could find a way to economically extract this gold, you would be a very rich person.
What is the Moho or Mohorovicic Discontinuity?
The Moho, short for Mohorovičić discontinuity, is the boundary between the Earth's crust and the mantle. It marks the change in seismic wave velocity due to the contrasting densities of the two layers. The Moho is typically located between 5 to 70 kilometers beneath the Earth's surface.
What is the atmospheric pressure in the troposphere?
The troposphere is the lowest layer of the earth's atmosphere and is the one that contains weather and which can support life. Its upper limit is the highest point that the suns heat can cause warm and moist air to reach. This means that the troposphere extends to a much higher altitude in the tropics than near the cooler poles - between 15km (9 miles) to 8km (5 miles). Atmospheric pressure varies from around 1000 kpa (14 pounds per square inch, PSI) at sea level down to about 200 kpa (3psi) at about 10km.
What are two facts about the troposphere?
The troposphere is the lowest layer of Earth's atmosphere where all weather occurs and contains about 75% of the atmosphere's mass. It is where temperature decreases with altitude, and most clouds and water vapor are found in this layer.
Where is the biggest rock in the world?
The largest rock in the world is Mt Augustus (Burringurrah, as it is known by Wajarri Yamatji traditional owners), in Western Australia, located inland, east of Carnarvon, and about 850km north of Perth. It is more than twice the size of Ayers Rock (Uluru). It rises 717 metres above the stony desert, and extends for a length of 8km - almost the entire circumference of Uluru. (Some sources say Mt Augustus is 858m in height, but Western Australia's Department of Conservation and Land Management states 717m.) It does not attract the same tourist numbers because it contrasts less dramatically with its surroundings, and does not have the colour changes that Ayers Rock displays during the days and seasons.
Where would the thickness of the earths crust about 40km and where would it be about 8km?
suma sa kandinq nqa banqs !
Where would the thickness of the earths crust be about 40km and where would it be about 8km?
The thickness of the Earth's crust is about 40 km in continental regions, like under mountain ranges. In oceanic regions, such as under the ocean floor, the Earth's crust is much thinner, around 8 km.
How many meters are in 8km?
There are 8000 meters in 8 kilometers.
What is 8km m?
8,000
What does 8km equal?
About five miles.
How many cm in 8km?
800,000cm
How big is teotihuacan?
Teotihuacán is about 8km by 5.33
What is the radius of a circle with 200.96km in area?
The radius is about 8km
What does 8000 meters equals to kilometers?
8000m is 8km
8 kilometers equals how many cm?
8km is 800,000cm
What is the area 8km x 4 km?
32 km2
How many miles for 8km?
8 kilometers is 4.97 miles.
