Program with Links to Abstracts

2:15 PM

Session Introduction

2:20 PM

Schwinger S.* Röhlen R. Wiesner N.

Contribution of Impact Material to the Lunar Magma Ocean Liquid and Solid Cumulates [#2025]
Where does material impacting the lunar magma ocean end up — in the solid cumulate or the magma liquid? And how does this affect mantle reservoir compositions?

2:30 PM

Fu H.* Jacobsen S. B. Sedaghatpour F.

Timeline of Lunar Differentiation Recorded in Calcium and Magnesium Stable Isotopes [#2400]
Ca and Mg stable isotope evidence revealed from lunar samples refines the timescale of the lunar differentiation to <10–30 or 30–150 million years.

2:40 PM

Andrews-Hanna J. C.* Evans A. J. Mallik A.

Forming the Lunar Asymmetries [#2507]
The lunar crustal and topographic asymmetry could have formed from a degree-one instability during magma ocean crystallization.

2:50 PM

Jones M. J.* Evans A. J.

Fate of Th- and Ti-Bearing Lunar Magma Ocean Cumulates in the Aftermath of Major Basin-Forming Impacts [#1750]
Oh, KREEP! where are you? / Hiding beneath the surface / Hugging the Moon’s core?

3:00 PM

Panel Q&A

3:20 PM

Scholpp J. S.* Dygert N.

Hybridization of Lunar Mantle Sources by Garnet-Bearing Cumulates During Overturn Reconciles the REE, and Nd and Hf Isotopic Characteristics of High-Ti Basalts [#1569]
Computational modeling of the impacts that lunar cumulate overturn and hybridization processes would have on REE and isotope compositions of mantle sources.

3:30 PM

Ji D. J.* Dygert N. D.

New Experimental Constraints on REE Partitioning Between Apatite and Silicate Melts and a Temperature and Composition-Dependent Predictive Partitioning Model [#1255]
The work presents new apatite-melt partitioning experiments relevant to the lunar magma ocean and a predictive model for apatite-melt trace element partitioning.

3:40 PM

Chaffee T.* Tikoo S. M. Abubo R. Boeschen S. G. Weiss B. P.

Testing Whether Lunar Melt Glasses Preserve Records of Impact-Generated Magnetic Fields [#1741]
South Ray melt glasses / Do they record impact fields? / We put this to test.

3:50 PM

Liang Y.* Tikoo S. M. Krawczynski M. J.

Experimentally Testing Whether Magmatic Processes Can Produce Strong Lunar Crustal Magnetism [#2572]
Lunar magnetism / Attracts our lab to resolve / Abnormalities.

4:00 PM

Panel Q&A

4:20 PM

Jung J.* Tikoo S. M. Burns D. H.

Exploring the Possible Origins of Magnetization Recorded in Apollo 11 Mare Basalts [#1810]
We conducted paleomagnetic investigations on four Apollo 11 mare basalts to explore the possible origin of their magnetizations.

4:30 PM

Zhou T.* Tarduno J. A. Cottrell R. D. Neal C. R. Nimmo F. et al.

A Lunar Core Dynamo Limited to the Moon’s First 200 Million Years [#2261]
New zero magnetic field measurements from Apollo samples as old as 4.3 Ga limits a strong, sustained lunar core dynamo to the Moon’s first 200 million years.

4:40 PM

Vervelidou F.* Shah J. Eckley S. Weiss B. P. Zeigler R. A.

Evidence for Temporal Variability of the Lunar Dynamo [#2369]
We conducted controlled-atmosphere, double-heating paleointensity analyses on three lunar regolith breccias of different assembly ages.

4:50 PM

Weiss B. P.* Wieczorek M. A. Gattacceca J. Tikoo S. M. McDonald C. et al.

Evidence for a Long-Lived Lunar Dynamo from Magnetization in Apollo Samples and the Lunar Crust [#1627]
The paleomagnetism of lunar rocks provides overwhelming evidence for a lunar dynamo lasting beyond 4.2 Ga ago and likely until at least 1.5 Ga ago.

5:00 PM

Panel Q&A

5:20 PM

Session Closure