List at least three pieces of information you would need when attempting to radiometrically date an igneous rock using

uranium-238/lead-206 isotopes. What will be an ideal response?


1. Mass of your sample
2. Mass of parent isotope: uranium-238
3. Mass of daughter isotope: lead-206
4. Condition of sample: Has it been exposed to weathering, metamorphism, etc.?
5. Half-life of uranium-238

Environmental & Atmospheric Sciences

You might also like to view...

Ozone, a gaseous O3 molecule that filters out harmful UV radiation, is found in the

a. Troposphere b. Geosphere c. Hydrosphere d. Stratosphere e. Biosphere

Environmental & Atmospheric Sciences

What is riparian vegetation, and why is it important to life in the desert biome?

What will be an ideal response?

Environmental & Atmospheric Sciences

Which of the following is the net ionic equation for the reaction of the weak acid HC2H3O2 with the weak base NH3?

A) HC2H3O2(aq) + NH3(aq) ? NH4C2H3O2(aq) B) HC2H3O2(aq) + NH3(aq) ? C2H3O2-(aq) + NH4+(aq) C) H3O+(aq) + NH3(aq) ? NH4OH(aq) D) H3O+(aq) + C2H3O2-(aq) + NH3(aq) ? NH4+(aq) + C2H3O2-(aq) + H2O(l)

Environmental & Atmospheric Sciences

Subsistence agriculture includes all of the following categories EXCEPT

A) shifting cultivation. B) pastoral nomadism. C) peasant-based agriculture. D) intensive subsistence agriculture wet rice dominant. E) mixed crop and livestock.

Environmental & Atmospheric Sciences