[Baps] TODAY! PLS - Jim Head (Brown U.) — Lunar Nearside-Farside Mare Basalt Asymmetry

[Jason Soderblom]

Happening in just over 3 hours.

On Apr 4, 2024, at 9:09 PM, Jason Soderblom <jms4 at mit.edu> wrote:

We are excited to announce that next week Jim head will be talking with us — details of his talk are below.

Cheers,
Jason and the PLS Organizing Committee


Speaker:  Prof. Jim Head, Brown University
Date: Tuesday April 9th
Time: 12:30 PM (as always, please arrive a few minuets early to get lunch)
Location: 54-517 & Zoom (link below)

Title: Lunar Nearside-Farside Mare Basalt Asymmetry: The Combined Role of Global Crustal Thickness and South Pole-Aitken Basin-Induced Lithospheric Thickening

Abstract: The first acquisition of lunar farside images by Luna 3 in 1958 revealed a substantial NS/FS asymmetry in mare basalt (MB) deposits,. In the following decades, many additional NS/FS asymmetries have been documented (e.g., albedo, topography, crustal thickness, composition (heat producing element (HPE), iron, titanium), terrane types, etc.). Among the explanations for the MB asymmetry are: asymmetric accretion; asymmetric degree 1 convection thickens crust; SPA basin impact or other factors bringing HPE to NS PKT terrain; asymmetric LMO convection; incomplete post-LMO residual layer foundering; late-stage LMO impact events, etc., all potentially causing, or contributing to, the NS/FS mare basalt asymmetry observed . We investigate the key causative factors in the observed NS/FS mare basalt asymmetry and propose  that it is due to two combined factors: NS/FS crustal thickness, and SPA basin event-accelerated lithospheric thickening.



Zoom: https://mit.zoom.us/j/93069069393
Pw: 54100

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