scholarly journals Untying microscopic Gordian knots: The granular (zircon) details of impact basins

Geology ◽  
2019 ◽  
Vol 47 (8) ◽  
pp. 799-800
Author(s):  
Aaron J. Cavosie
Keyword(s):  
Impact Basins

The evolution of impact basins: Viscous relaxation of topographic relief

1982 ◽  
Vol 87 (B5) ◽  
pp. 3975 ◽  
Author(s):  
Sean C. Solomon ◽  
Robert P. Comer ◽  
James W. Head
Keyword(s):  
Impact Basins ◽  
Viscous Relaxation ◽  
Topographic Relief

Stochastic Late Accretion to Earth, the Moon, and Mars

Science ◽  
2010 ◽  
Vol 330 (6010) ◽  
pp. 1527-1530 ◽  
Author(s):  
William F. Bottke ◽  
Richard J. Walker ◽  
James M. D. Day ◽  
David Nesvorny ◽  
Linda Elkins-Tanton
Keyword(s):  
Size Distribution ◽  
Asteroid Belt ◽  
The Moon ◽  
Core Formation ◽  
Highly Siderophile Elements ◽  
Earth’S Mantle ◽  
Distribution Matching ◽  
Siderophile Elements ◽  
Impact Basins

Core formation should have stripped the terrestrial, lunar, and martian mantles of highly siderophile elements (HSEs). Instead, each world has disparate, yet elevated HSE abundances. Late accretion may offer a solution, provided that ≥0.5% Earth masses of broadly chondritic planetesimals reach Earth’s mantle and that ~10 and ~1200 times less mass goes to Mars and the Moon, respectively. We show that leftover planetesimal populations dominated by massive projectiles can explain these additions, with our inferred size distribution matching those derived from the inner asteroid belt, ancient martian impact basins, and planetary accretion models. The largest late terrestrial impactors, at 2500 to 3000 kilometers in diameter, potentially modified Earth’s obliquity by ~10°, whereas those for the Moon, at ~250 to 300 kilometers, may have delivered water to its mantle.

Possible mantle origin of olivine around lunar impact basins detected by SELENE

2010 ◽  
Vol 3 (8) ◽  
pp. 533-536 ◽  
Author(s):  
Satoru Yamamoto ◽  
Ryosuke Nakamura ◽  
Tsuneo Matsunaga ◽  
Yoshiko Ogawa ◽  
Yoshiaki Ishihara ◽  
...  
Keyword(s):  
Mantle Origin ◽  
Lunar Impact ◽  
Impact Basins

scholarly journals Magnetic fields of lunar multi-ring impact basins

2003 ◽  
Vol 38 (4) ◽  
pp. 565-578 ◽  
Author(s):  
J. S. Halekas ◽  
R. P. Lin ◽  
D. L. Mitchell
Keyword(s):  
Magnetic Fields ◽  
Impact Basins

On Venus impact basins: Viscous relaxation of topographic relief

1982 ◽  
Vol 87 (B9) ◽  
pp. 7763 ◽  
Author(s):  
Sean C. Solomon ◽  
Stuart K. Stephens ◽  
James W. Head
Keyword(s):  
Impact Basins ◽  
Viscous Relaxation ◽  
Topographic Relief

scholarly journals Depth of Origin of the Peak (Inner) Ring in Lunar Impact Basins

2017 ◽  
Vol 44 (20) ◽  
pp. 10,140-10,146 ◽  
Author(s):  
Katarina Miljković ◽  
Myriam Lemelin ◽  
Paul G. Lucey
Keyword(s):  
Lunar Impact ◽  
Impact Basins
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