If we find a dinosaur fossil, and in the same rock there is a crystal which...
If we find a dinosaur fossil, and in the same rock there is a crystal which can be radiometrically dated, and we get a date of 237 mya from that crystal, what age are we measuring?
| a. The age of the Earth. |
| b. The age of the sedimentary rock in which it was found. |
| c. | The age when the crystal was formed in an igneous rock. |
| d. The age of the dinosaur. |
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If we find a dinosaur fossil, and in the same rock there is a
crystal which...
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Dinosaur fossils are too old to be reliably dated using carbon-14, which has a half-life of about 5730 years. Suppose we had a 66 million year old dinosaur fossit. How much of the living dinosaur's 14c would be remaining today? (Round your agswer to flve decimal places.) % Suppose the minimum detectable amount is O.7 %. What is the maximum age of a fossil that we could date using 14c7 (Round your answer to the nearest integer) Need Help? Read...
please hep. The phrase, "The present is the key to the past," refers to the doctrine...
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All problems (Earth Science Dinosaurs) You find some dinosaur fossils in rocks that overlie (are found...
All problems (Earth Science Dinosaurs)
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Sometimes we have to take into account IGNEOUS INTRUSIONS. These are masses of magma that formed...
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noic arains ehtly md shale Lab #4 M maine too Has alie aplits hoets Lab #4:...
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please answer all 14 questions
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A heavy rock and a light rock of the same size are falling through the air...
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Dinosaur fossils are too old to be reliably dated using carbon-14, which has a half-life of about 5730 years. Suppose we had a 66 million year old dinosaur fossit. How much of the living dinosaur's 14c would be remaining today? (Round your agswer to flve decimal places.) % Suppose the minimum detectable amount is O.7 %. What is the maximum age of a fossil that we could date using 14c7 (Round your answer to the nearest integer) Need Help? Read...
please hep.
The phrase, "The present is the key to the past," refers to the doctrine of What is the name of a Phanerozoic era that represents the age of mammals? Fossils used for matching rocks of the same age are called Dinosaurs lived during the The remains or traces of prehistoric life are called In an un-deformed sequence of sedimentary rocks, each bed is older than the one above and younger than the one below. The preceding is a...
All problems (Earth Science Dinosaurs)
You find some dinosaur fossils in rocks that overlie (are found on top of) an ash bed and that are cut by a volcanic dike. Using radiometric dating, geologists determine the age of the ash bed to be 120 million years (Ma) and the dike to be 100 Ma. What can you say about the age of the dinosaur fossils? Select one: O a. Their age is probably halfway between the age of the ash...
Sometimes we have to take into account IGNEOUS INTRUSIONS. These are masses of magma that formed within the crust keep in mind that magma bodies do not usually follow the principle of superposition. Take a look at the diagrams below and answer the following questions ground surface a) Which sedimentary layers are younger than this granite intrusion? List all that apply. b) Which sedimentary layers are older than this granite intrusion? List all that apply. GRANITE c. Based on the...
noic arains ehtly md shale Lab #4 M maine too Has alie aplits hoets Lab #4: Metamorphic Rocks or more slowle a. When the isotherms are more closely spaced, is the temperature changing more guickly Circle one. ls me 3. The rate at which the temnerature increases with denth is called the geothermal gradient. bndan b. On the diagram on the previous page there is a vertical line marked A. This line represents about 40 km on the diagram. Calculate...
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