» » What are methods of dating rocks

What are methods of dating rocks

281
  • Share this video:
  • What are  methods of dating rocks - Facebook
  • What are  methods of dating rocks - Twitter
  • What are  methods of dating rocks - Google+
Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libby , who received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14 C combines with atmospheric oxygen to form radioactive carbon dioxide , which is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of 14 C it contains begins to decrease as the 14 C undergoes radioactive decay. Measuring the amount of 14 C in a sample from a dead plant or animal, such as a piece of wood or a fragment of bone, provides information that can be used to calculate when the animal or plant died.

Rubidium–strontium dating

2 methods of dating rocks and fossils | I-Studentz

Radiometric dating of rocks and minerals using naturally occurring, long-lived radioactive isotopes is troublesome for young-earth creationists because the techniques have provided overwhelming evidence of the antiquity of the earth and life. Some so-called creation scientists have attempted to show that radiometric dating does not work on theoretical grounds for example, Arndts and Overn ; Gill but such attempts invariably have fatal flaws see Dalrymple ; York and Dalrymple Other creationists have focused on instances in which radiometric dating seems to yield incorrect results. In most instances, these efforts are flawed because the authors have misunderstood or misrepresented the data they attempt to analyze for example, Woodmorappe ; Morris HM ; Morris JD Only rarely does a creationist actually find an incorrect radiometric result Austin ; Rugg and Austin that has not already been revealed and discussed in the scientific literature.

Mention two methods of dating rocks and fossils

Potassium-argon dating , method of determining the time of origin of rocks by measuring the ratio of radioactive argon to radioactive potassium in the rock. This dating method is based upon the decay of radioactive potassium to radioactive argon in minerals and rocks; potassium also decays to calcium Thus, the ratio of argon and potassium and radiogenic calcium to potassium in a mineral or rock is a measure of the age of the sample.
Geology can also include the study of the solid features of any terrestrial planet or natural satellite such as Mars or the Moon. Modern geology significantly overlaps all other Earth sciences, including hydrology and the atmospheric sciences , and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure.
Popular Video
Video сomments(16)
  1. armyhellion1328.02.2021

    sweet mmmm

  2. snctrack3
    snctrack328.02.2021

    you are one sexy piece of ass

  3. Lesbianul
    Lesbianul01.03.2021

    Nice tits for cumshots.

  4. AssBuster01.03.2021

    very hot and you are beautiful.and i also live in NY

  5. fineass2
    fineass202.03.2021

    Wow.hot, or what? She is a babe.and those nipples.Mmmmmmm.gorgeous and so sexy.

  6. treatmelikeaho02.03.2021

    yesss, you make me cum !

  7. linebacker5502.03.2021

    can I cum in that pussy?)

  8. kayvon02.03.2021

    Goregous pic

  9. FERTORI
    FERTORI02.03.2021

    P thanks

  10. V2519602.03.2021

    im taking more than a moment 4 that ass

  11. Usmcletus
    Usmcletus02.03.2021

    i would fuck you when and where ever you want honey

  12. hardcore_dubstep
    hardcore_dubstep04.03.2021

    chce!

  13. tsaha04.03.2021

    you make me hungry .

  14. Aenema701
    Aenema70107.03.2021

    i gooooooooooooooooooooooo

  15. squier732
    squier73208.03.2021

    You need a Good hard spanking.

  16. tony381
    tony38109.03.2021

    setz dich auf mein gesicht süße.und lauf schön aus .

Leave a Reply