Science - geology

The age of a granite can be determined using radiometric dating. Explain the basis for a determination of a 238U-Pb radiometric date of 1120Ma for a granite.......HELP!!!

hi sounds like you are on the same course as me i was stuck on this so give this a go as this is what jiska helped me

u238 decays to Pb in a known rate so that knowing the ratio of Pb you can determine the time elapse since the U was placed in the sample of granite. This function is not inverse it is an expontential decay

I hope this helps

Thank you - yes on TMA08 of S103. Not enjoying it - thankfully it's nearly over.

yes i cant wait then i have got my 360
do you have any help for me on q1

This is the last course you are doing? It's one of my first, that's why i'm struggling. Which part of Q1?

how have you done the cross section is it like the one on p127 and what sketch have you got for schist, I have little grains smaller than sandstone is that right

many thanks

ps maybe we can help each other on part c of q1 that's if that's ok

Just an observation. Be careful what you ask here as S103 Tutors read this as well.

what steps do you think can be taken to reduce the harmful effects of human activities on biogeochemical cycles?

Hi Bex - think diagram on P127 is best bet, we'll talk on part c... Schist - I think (b) on page 46 - read paragraph 2 on page 46. . . .Cheers Desmond .... P.S - can't wait for ECA! Looks like so much fun - NOT!

The schist grains are supposed to bigger than the sandstones, try page 46 of block 10 for an example

The first major step to take would be to cut down on pollution. Human pollution has introduced elements into the cycle that nature was not prepared to handle. If we could cut down on burning fossil fuels, dumping oil and chemicals into our water system, and burying our waste, we could make a significant difference. Also with modern technology we could develop methods to clean and cut down on the amount of pollutants introduced into nature. Non chemical factors that have affected our environment include the massive agricultural impact we have and the over hunting and fishing that are throwing nature off balance. If we could also slow the rate of our farming practices, we could possibly give the earth more time to heal.

The types of business most affected by this would be oil refineries, large factories, gas companies, vehicle manufacturers, farmers, hunters, fisherman, and recycling companies. Aside from the recycling companies, all of the other businesses would take a big hit in profits because of the money it would take for them to cut down on the pollutants with safer practices. Although we continue to search for alternate methods of energy production, the results often yield something more costly or not efficient enough.

What are four states of matter

  1. 👍 0
  2. 👎 0
  3. 👁 121

Respond to this Question

First Name

Your Response

Similar Questions

  1. Radiometric Dating

    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. geological radioactivity

    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
  4. 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

    asked by Bean on April 30, 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

    asked by Adam on April 11, 2007
  6. 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
  7. Geology

    Does this sound right? Describe your assigned method and how it is used to evaluate geologic time. My assigned method was Absolute Dating / Numerical Age. Absolute Dating / Numerical Age is the process that assigns a numerical age

    asked by A.W. on March 31, 2009
  8. Science

    What process involves the comparison of rock layers with others in a sequence to determine its age? radioactive decay radiometric dating relative dating absolute dating To determine the most accurate and precise age of Earth's

    asked by Abby on October 30, 2013
  9. Earth Science

    1. Using included fragments to estimate the age of a rock unit. Pieces of granite were found in conglomerate (a) that gave a radiometric date of 320 Ma. Also, fragments of the rhyolite (b) and granite (c) were found in

    asked by Sam on July 14, 2008
  10. Biology

    What three things must be known to perform radiometric dating?

    asked by Candy on March 21, 2013

More Similar Questions