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Goulds Belt, Interstellar Clouds, and the Eocene Oligocene Helium-3 EnhancementDrag from hydrogen in the interstellar cloud which formed Gould's Belt may have sent interplanetary dust particle (IDPs) and small meteoroids with embedded helium to the Earth, perhaps explaining part the helium-3 flux increase seen in the sedimentary record near the Eocene-Oligocene transition. Assuming the Solar System passed through part of the cloud, IDPs in the inner Solar System may have been dragged to Earth, while dust and small meteoroids in the asteroid belt up to centimeter size may have been dragged to the resonances, where their orbital eccentricities were pumped up into Earth-crossing orbits; however, this hypotheses does not explain the Popigai and Chesapeake Bay impacts.
Document ID
20170002357
Document Type
Reprint (Version printed in journal)
Authors
Rubincam, David Parry (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
March 17, 2017
Publication Date
September 25, 2015
Publication Information
Publication: ICARUS
Volume: 264
ISSN: 0019-1035
Subject Category
Lunar and Planetary Science and Exploration
Solar Physics
Lunar and Planetary Science and Exploration
Report/Patent Number
GSFC-E-DAA-TN40223
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.