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Origin of volatiles in earth: indigenous versus exogenous sources based on highly siderophile, volatile siderophile, and light volatile elements
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Danielson, L. Pando, K. M. Nickodem, K. Righter, K. Marin, N. |
| Copyright Year | 2015 |
| Description | Origin of Earth's volatiles has traditionally been ascribed to late accretion of material after major differentiation events - chondrites, comets, ice or other exogenous sources. A competing theory is that the Earth accreted its volatiles as it was built, thus water and other building blocks were present early and during differentiation and core formation (indigenous). Here we discuss geochemical evidence from three groups of elements that suggests Earth's volatiles were acquired during accretion and did not require additional sources after differentiation. |
| File Size | 270561 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150002835 |
| Archival Resource Key | ark:/13960/t7qp14h8r |
| Language | English |
| Publisher Date | 2015-03-16 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Lunar And Planetary Science And Exploration Geology Earth Mantle Metals Geochemistry Earth Core Silicates Planetary Composition Earth Planet Volatile Organic Compounds Temperature Effects Planetary Evolution Siderophile Elements Magnesium Oxides Chondrites Silicon Deposition Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
