Answer:
c. are too old (predate sedimentary deposition)
Explanation:
Radiometric dates calculated from minerals in sedimentary rocks produce ages that are too old and often predates the sedimentary deposition.
Radiometric dating involves the uses of radioactive elements in rocks to measure the absolute age of rock.
It involves comparing the daughter to parent ratio because the decay started when the minerals formed in a rock in a period of crystallization or metamorphic event.
- Sedimentary rocks are often made up of re-worked minerals.
- They are derived from pre-existing igneous and metamorphic rocks.
- When radioactive minerals from these sources finds their way into sediments, they give the age of their parent rock and not that of the sedimentary rock because their activity is not being reset.
The inability of the financial sector to support new industries is part of a broader problem in Taiwan. ... Insufficient investment has not only led to a low economic growth rate and low wages in Taiwan, but it also has meant huge trade surpluses and hence high foreign pressure for currency appreciation in Taiwan.
Answer:
I think It might be deletion mutation
Answer:
The elevation changes from 635 to 600 at the picnic area.
Explanation:
In the picnic area which is close to point 4 on the map, the elevation changes from 635 to 600. We see that the site chosen for the picnic has a very gentle elevation and would be easily taken as a flat plain surrounded by hills.
The contours here are far apart and it implies a flat area with gentle slope. The only creek here is the equation creek. The area is below 635.
