Compositional Structure of the Lunar Crust:
The New View from the Moon
The Woodlands Waterway Marriott Hotel and Convention Center
1601 Lake Robbins Drive, The Woodlands, Texas, USA
February 27-28, 2010
Sponsored by: Brown University, The Vernadsky Institute, Brown/MIT NLSI
Apollo and Luna exploration and sample return missions were targeted to specific areas of high scientific interest. Returned soils and rocks reflected both the local geology and interesting material of unknown provenance. Lunar meteorites provided additional samples from elsewhere on the Moon. From these data, models for the compositional structure and evolution of the lunar crust have been formulated and concepts such as the Lunar Magma Ocean have been articulated.
Recent and ongoing lunar missions have provided fundamental new perspectives on the mineralogy, composition and structure of the lunar crust. High spatial and spectral resolution spectrometer data have shown the detailed location and setting of both typical and anomalous exposures of soils, tephra, rocks and bedrock. These new spectrometer data now permit the linking of specific lunar sample types to specific local and regional geological settings, deposits and environments.
New high-resolution image data have provided the context for these observations at geological block and outcrop scale and new elemental data help provide regional context. Detection of water has raised the question of volatile sources and sinks.
These new data now place the lunar sample collection in the context of the geology of the lunar crust. The spectroscopy of crater central peaks and basin rings can now be compared directly to returned samples and to models for the structure and evolution of the crust. The mineralogy of specific mare basalt units over the entire Moon can be compared to lunar soils and rock samples. Furthermore, these new global measurements are discovering unusual new rock types and rewriting our understanding of the role of volatiles on the Moon.
Together, these new data are irrevocably changing our perspective on the next generation of important scientific topics and exploration destinations.
The goal of Microsymposium 51 is to present a summary of these new discoveries, and to bring together representatives of the lunar spectroscopy, mineralogy, petrology, geochemistry and geophysics communities to ponder the implications of this new perspective for the next generation of significant scientific problems.
A critical aspect of this discussion will be to assess the implications of this new perspective for future modes and destinations for robotic and human exploration of the Moon.
(Contributions are 30' each; 20' presentation, 10' discussion)
(Most presenters are presenting on behalf of a larger team of co-authors)
Saturday, February 27, 2010
Marriott Hotel Montgomery Ballroom
1:00 PM State of Knowledge and Outstanding Issues. Chair: Jim Head
1. Brad Joliff: "Geochemical Provinces on the Moon: Current Understanding and Outstanding Problems."
2. Larry Taylor: "The Petrology of the Lunar Crust: Current Knowledge and Outstanding Problems."
3. Mark Wieczorek: "Current Knowledge and Outstanding Problems in Lunar Crustal Structure from a Geophysical Standpoint."
4. Ian Garrick-Bethell: "The History of Lunar Magnetism and Implications for Lunar Evolution."
3:00 PM Recent Mission Results and Implications for Future Studies. Chair: Carle Pieters
European Space Agency (ESA) SMART-1.
5. Bernard Foing: "Highlights of Lunar Crust and Compositional Studies with SMART-1 and Future Landers and Rovers."
Japanese Space Agency (JAXA) Kaguya Mission.
6. Sho Sasaki and Yoshiaki Ishihara: "Crustal Thickness and Structure of Impact Basins from Kaguya Data."
7. Makiko Ohtake and Junichi Haruyama: "Distribution and Composition of the Purest Anorthosite on the Lunar Surface."
8. Robert Reedy and the Kaguya Gamma Ray Spectrometer Team: "Elemental Maps of the Lunar Crust from the Kaguya Mission."
New Insights from Meteorites.
9. Alexander Basilevsky: "Lunar Meteorites: What They Tell Us About the Spatial and Temporal Distribution of Mare Basalts."
6:00 PM Reception & Further Informal Discussion. Foyer of the Montgomery Ballroom
Sunday, February 28, 2010
8:00 AM United States (NASA) Lunar Reconnaissance Orbiter. Chair: Sasha Basilevsky
10. Mark Robinson: "New Insights on Crustal Structure and Processes from Lunar Reconnaissance Orbiter Camera (LROC)."
11. David Paige: "New Insights from the Lunar Reconnaissance Orbiter DIVINER Instrument."
9:00 AM Chinese Space Agency Chang'E.
12. Jiang Jingshan: "New Views of Lunar Microwave Features: Some Results of the CE-1 Microwave Sounder (CELMS)."
9:30 AM Indian Space Agency (ISRO) Chandrayaan-1. Chair: J. N. Goswami
13. Barry Kellett: "Lunar Chemistry from Chandrayaan-1: C1XS Results from Southern Nearside Highlands of the Moon."
14. Jim Head: "The Lunar Orientale Basin: New Understanding of Basin Processes from Chandrayaan-1 M3 and LRO LOLA Data."
15. Carle Pieters: "South Pole-Aitken Basin Mantle (?) Sampling at the SPA Mafic Mound (the old Olivine Hill)."
16. Tom McCord: "Origin of OH/Water on the Lunar Surface Detected by the Moon Mineralogy Mapper."
17. M3 Team: New Spinel-rich Rock Types on the Moon: Insights from the Moon Mineralogy Mapper."
Commentary, Discussion and Synthesis. Chair: Harry Hiesinger
12 Noon Adjourn.
Co-Convenors. Carle Pieters, James Head, Alexander Basilevsky, Mike Wyatt, and Harry Hiesinger.