Curve type is ___________

The slope is ____________

The intercept is _________

For reference, write down the equation referred to in problem 3

__________________________

4. A plot of log(N) as given in problem 3 would look like what kind of curve? What is its slope? What is its intercept?

7. In you are given that o is 0.40 (40%) and that c= 0.00005 ft-1.

At what depth (in feet) will the porosity drop to 50% of maximum porosity? Show steps and computations. Offer brief explanations or notes to make sure the reader will know what you are doing.

0cze

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0 1 2 3 4 5 6 7

Depth (kilometers )

Po

rosi

ty

10. Given the data in part b of problem 9 above, consider the following. If the porosity continued to vary with the same slope observed between 2 and 4 kilometer depths what would the porosity be at the surface (i.e. what is the intercept of a line with the slope determines in part b of problem 9?). Show your computations.

We’re after the intercept – this point

Grade

30 40 50 60 70 80 90 100

Number

0

1

2

3

4

5Geol 351 Mid Term Grade Distribution