# Geology

Can anyone help me please? I have a sample of granite, which has been determined to have a U238-Pb date of 1120 Ma. How can I find out how this was determined? I have been trying to calculate this but my brain has frozen, so any help would be appreciated! I don't expect the answer but if I could be advised of the equation to use that would be great. Thank you!

I take it this is S103 TMA08 Q2(b) (10 marks) "The age of a granite can be determined using radiometric dating. Explain the basis for the determination of a 238U-Pb radiometric date of 1120 Ma for a granite."

The key word here is "explain". There is nothing to calculate.

The best source of information is the course books. Try Section 8.5 B10.

1. 👍 0
2. 👎 0
3. 👁 175
1. What is a name?

1. 👍 0
2. 👎 0

## Similar Questions

I have to answer the question 'The age of granite can be determined using radiometric dating. Explain the basis for the determination of a 238 U-Pb radiometric date of 1120 Ma for granite'. Can anyone suggest any sources to help

asked by Bean on April 27, 2007
2. ### Geology

The age of granite can be determined using radiometric dating. How would I explain the basis for the determination of a 238 U-Pb radiometric date of 1120 Ma for granite? Any help gratefully received. Tough one. I wonder if the

asked by Sam on April 5, 2007
3. ### chemistry

A granite sample has a density of 2.76 g/cm3. What is the mass of a granite block that measures 3.25 cm x 5.50 cm x 7.00 cm?

asked by farrah on February 12, 2013

What ihe basis for the determination of Uranium 238-Lead radiometric date of 1120 ma for granite Wouldn't it be the ratio of U238 and lead in the granite? I do not think so, i have actually answer the question explaing it in words

asked by bonita on March 28, 2007
5. ### Geology

1) Granite is an intrusive, felsic rock, which may be produced by partial melting or fractional crystallization. Explain how these processes can produce felsic magmas from more mafic parent magmas 2)The age of granite can be

6. ### physics

A prospector finds a solid rock composed of granite ( = 2650 kg/m3) and gold. The volume of the rock is 3.05 10-4 m3 and its mass is 3.57 kg. What mass of gold is contained in the rock? I thought that I could used some ratio, but

asked by JJ14 on June 19, 2007
7. ### Forces Within and Deciphering Earth's History

If you find a large piece of granite that, upon inspection, contains smaller fragments of sandstone, which would you say is older, the granite or the fragments of sandstone? A. Sandstone B. It's impossible to tell. C. They're both

asked by Prisila on December 13, 2017
8. ### geology / science

the age of granite can be determind using radiometric dating, explain the basis for the determination of a 238 U- Pb radiometric date of 1120 Ma for a granite. I have as the answer 238 U decays to Pb with an experimental law, that

asked by bex on April 18, 2007
9. ### science

explain why a single5 500 kg block of granite weathers much more slowly than 100 chunks of granite weighing 5 kg each.

asked by Dani on November 18, 2010
10. ### Science

A slab of granite has a mass of 1400.0 grams. The specific heat of granite is 0.040 J/gC. How much heat must be absorbed to raise the granite slab's temperature by 75 degrees C? 11.8 kJ 80.5 kJ 88.2 kJ 19.5 kJ I've tried solving

asked by Rachael on March 16, 2016

More Similar Questions