No cooling

1
(No Transcript)
2
(No Transcript)
3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
(No Transcript)
30
No cooling just radioactivity
QQ_R E_k E_phi E_R1.e9 W/K
31
No radioactivity just cooling
32
(No Transcript)
33
(No Transcript)
34
Results are dependent on the density jump at the
ICB
35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
Similar results from Labrosse
39
(No Transcript)
40
Conclusions

• Get young IC if there is no radioactivity
• Adding some radioactivity makes the IC be older
  (but still less than 1.5 byr). However, there is
  still probably sufficient entropy production to
  power a dynamo over all of Earth history