Dedication
More than 450,000 engineers, skilled workers, managers, and families; and the American taxpayer and political leaders, all of whom contributed mightily to the success of the Apollo Program at a time of great ideological conflict between democracy and tyranny — it is to these, largely unsung heroes of Apollo that this diary is most humbly dedicated. The contribution of these individuals and teams to the ending of the Cold War and to the success of humankind’s first venture away from Earth can never be adequately repaid.
I also dedicate this diary to those hundreds of modern lunar scientists who, in aggregate, have expanded without measure our understanding of the early history of the Earth and the role the Moon will play in further space exploration and settlement by humankind.
Copyright © 2017 by Harrison H. Schmitt. All rights reserved.
Table 8.10b
Fraction of ilmenite basalt and U+Th content in deep drill core regolith zones†
| 1Oxide
And U+Th |
271501 Crater Cluster | 378221 | Zone | 1TiO2 | 4Basalt
vs. TiO2 |
5U+Th
(ppm) |
6Basalt vs.
U+Th |
| SiO2 | 39.82 | 43.9 | 70181 | 8.11 | 0.75 | 1.380 | 0.84 |
| TiO2 | 9.52 | 3.9 | S | 8.3
[1] |
0.78 | 1.08
[1] |
0.92 |
| Al2O3 | 11.13 | 19 | S* | 8.5
[20] |
0.82 | ||
| FeO | 17.41 | 11.9 | T | 9.1-9.8
[28]/[38] |
~0.96 | 0.999
[26] 1.459 [28] 0.93 [30] 1.43 [40] 0.96 [50] |
0.99
0.64 1.04 0.65 1.02 |
| MnO | 0.25 | 0.135 | U | 89-10 | 8~1.0 | 1.414
[63] |
0.66 |
| MgO | 9.51 | 9.3 | V | 6/7.23
[81]/[93] |
0.48 | 1.431
[93] |
0.64 |
| CaO | 10.85 | 12.4 | V* | 6.1
[108] |
0,39 | 1.75
[108] |
0.39 |
| Na2O | 0.32 | 0.37 | W | 5.4/5.8
[140]/ [133] |
0.30 | 1.985
[133] 1.7 [140] |
0.21
0.43 |
| K2O | 0.07 | 0.12 | W* | ||||
| Mg/Fe | 0.55 | 0.78 | X | 5.7/6
[178]/ [173] |
0.30 | 1.884
[174] 1.7 [178] |
0.29
0.43 |
| X* | |||||||
| U+Th | 0.98 | 2.25 | Y | 5.7/5.44
[220] [213} |
0.32 | 2.101
[215] 2.20 [220] |
0.12 |
| Z | 5.8/5.56
[258]/ [253] |
0.32 | 3.556
[256] 1.9 [258] |
7n/a
0.28 |
|||
| Z* | 5.6/
[286] |
0.32 | 2.0
[286] |
0.20 | |||
| Z** | 5.86
[294] |
0.34 | 1.916
[290] |
0.26 |
†Compilation of compositional data related to an approximation of the fractions of regolith developed from ilmenite basalt and Sculptured Hills bedrock now present in the deep drill core regolith ejecta zones.
1 From Meyer (2008) compilation for 70001/9 with depth of analysis given in brackets [ ].
2 Youngest and most isolated ilmenite basalt regolith sampled.
3 Sculptured Hills regolith from beneath boulder 78235.
4 From the relationship: x(9.52) + (1-x)3.9 = TiO2, where “x” is the ilmenite basalt particle fraction in the given zone.
5 From Silver (1974) and Meyer (2008) compilation with depth of analysis given in brackets [].
6 From the relationship x(0.98) + (1-x)2.25 = U+Th, where “x” is the ilmenite basalt particle fraction in the given zone.
7 U+Th value outside the assumed average, based on sample 78221.
8 No analysis of TiO2 for zone U (60-80 cm) published. Estimate based on composition of regolith sampled at Camelot Crater, the source crater for zone U, as will be discussed below.
Table 8.11
Revisions of MIm and ∆MI for 70181 and Zones S-U†
| Zone | MIm | ∆MI | MIm Revised | ∆MI Revised |
| 70181 | 40 | 16 | 56 | 22 |
| S | 44 | 9 | 61 | 13 |
| S* | 47 | 11 | 65 | 15 |
| T | 10 | 45 | 14 | 64 |
| U | 30 | 8 | 42 | 11 |
†Revisions of MIm and ∆MI from Morris et al. (1979) to account for ilmenite attenuation of radiation from solar wind and alpha particles by a factor of 1.39 (§8.3.2).