<span>1) Would depend on what you were trying to date. It you were trying to date the crystallisation of the parental magma, most likely U-Pb dating on zircon or perhaps monazite if present. Both minerals occur commonly as igneous minerals in granite and are relatively resistant to metamorphism, so stand a reasonable chance of retaining the crystallization age. The U-Pb system is also a long-lived decay system, so is appropriate to the timescale.. If you were trying to date the age of the 'stuff' the granite was made from (i.e. when the 'stuff' was extracted from the mantle) Hf isotopes. If you were trying to date the cooling history of the granite, a combination of U-Pb (on minerals such as titanite), Ar-Ar and Rb-Sr dating. The Rb-Sr and K-Ar (which Ar-Ar dating is based upon) and the Lu-Hf system are also long-lived systems, which are appropriate to the timescalse but typically record different information from the U-Pb system in zircon. In the case of the Rb-Sr and K-Ar system, they are prone to disturbance by heating, which makes them useful for dating the cooling and uplift history of rocks. </span>
<span>2) Is a tricky measurement. You could use Ar-Ar dating or U238-U234-Pb206 dating. But both are analytically difficult because both the U-Pb and K-Ar system are based on decays that are slower than is optimal for the age range. There is not really a better alternative though. Both methods, are however applicable to young igneous rocks, with care. </span>
<span>3) C14 dating. The material is geologically young and organic, so if it has remained closed system, C14 is probably applicable. </span>
<span>4) None. You would look for volcanic ash beds in the sedimentary sequence and do U-Pb dating on the contained zircons. With a few exceptions, fossils cannot be directly dated.</span>
Answer: c. a meteoroid
Both meteor and meteorite are meteoroids that have penetrated the Earth's atmosphere while meteoroids are small parts of an asteroid or comet that are found orbiting the sun or near the Earth
I attached a picture of the layers of the earth. They are the:
Crust (<em>which isn't really the interior</em>)
Mantle
Outer Core
Inner Core
Answer:
C: Plates float on the liquid mantle located below the crust.
Explanation:
Plates at our planet’s surface move because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again.
Scientists once thought that Earth’s plates just surfed on top of the mantle’s giant convection cells, but now scientists believe that plates help themselves move instead of just surfing along. Just like convection cells, plates have warmer, thinner parts that are more likely to rise, and colder, denser parts that are more likely to sink.
Answer:dont know cuz confusing
Explanation: