Synthesis
Apollo does not expose a metraial that is very distinct from that in the rest of north-central SPA. Head, etal, 1993
Issues
Topography
Why the peak ring absent in southeast?
Geophysics
Geochemical
<p><span lang="EN-US">Except the SPA impact processing, what’s
the effect of Apollo impact to the HET-A and OPX-A distribution in this region?<o:p></o:p></span></p>
Geologic unit
Cratering
Excavition depth and eruption source?
<b><span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:
minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:
ZH-CN;mso-bidi-language:AR-SA">What’s the effects of South Pole-Aitken basin on
the forming of Apollo basin?</span></b>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">Compara
the Apollo basin to a basin of similar size.</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">Numerical
simulation</span>
Was the mantle material excavited by Apollo impact?
Synthesis
<p class="MsoNormal"><b><span lang="EN-US">Are the south and north maria from different source?<o:p></o:p></span></b></p>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1.
Composition differences</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">2.
Age ranges</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">3.
Thickness estimate</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">4.
Volumn estimate</span>
Mg#
<p class="MsoNormal"><b><span lang="EN-US">What is the material of sub-SPA?<o:p></o:p></span></b></p>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1. Gravity
anormaly and crustal thickness</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">2.
Numerical simulation</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">3.
Mineralogy and petrology of maria, peak ring</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">4.
Geophysical of peak ring</span>
What if the SPA impact melt differciated or not?
Implications
Material from deep interior
Interior structure
ejecta fragments from Orientale to dating Orientale age
Important part when generating the chronology function Neulkum et al.,(2001)
The last basin scale impact
Ejecta fragments or breccia of SPA, by collapsion or younger impact
Potential issues<br>
South crust was thicker (20 km) than north crust(40 km). <br>
Did it affect the imapct consequences?
Steps
Select comparable basins<br>
Similar size<br>
Similar age<br>
Peak-ring basin<br>
No tremendous mare emplacement, covering much area<br>
Different terrains: Mare, Highland<br>
Results
can not find matchable basins from mare region<br>
canditates<br>
Keeler-Heaviside
500km peak highland Nectarian<br>
Korolev
440km peak-ring highland N/PN(Fasset,2012)
Compare basins<br>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1.
Numerical simulation</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">2.
Morphology and structures</span>
Topography and Crustal thickness profile compare
<b><span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:11.0pt;font-family:"Calibri","sans-serif";<br>mso-ascii-theme-font:minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:<br>minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";<br>mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:<br>ZH-CN;mso-bidi-language:AR-SA">Maria patchs</span></b>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1.
Mineralogy and petrology</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">2. Age</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">3.
Thickness</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">4.
Volumn</span>
<b><span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-fareast-font-family:宋体;mso-fareast-theme-font:
minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:
ZH-CN;mso-bidi-language:AR-SA">Peak ring</span></b>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">1. Mineralogy
and petrology</span>
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">2. Geophysical</span>
Mg#-Origin difference
Different mare patch
Peak ring
<p class="MsoNormal"><b><span lang="EN-US"> Comprehensive analysis<o:p></o:p></span></b></p>
