Introduction to Geochemistry
Introduction to Geochemistry Introduction to Geochemistry
Nucleosynthesis ! Process forming elements heavier than He (or trace Li) ! Determined from nuclear fusion calculations, solar abundances of elements, meteorite and comet compositions ! Solar (cosmic) abundances of the elements • Obtained from spectrometric observation of the Sun’s s corona (emission lines from ions in the solar photosphere) • Not really “cosmic”,, because precise concentrations vary among stars • H and He are most abundant elements (primordial H, some He)
Cosmic Abundances of the Elements U B
- Page 1 and 2: Introduction to Geochemistry ! Geoc
- Page 3: Origin of the Universe ! “Big Ban
- Page 6 and 7: Hubble constant v = Hd H = Hubble c
- Page 8 and 9: COBE data ! COsmic Background Explo
- Page 10 and 11: Hubble Deep Field ! Long exposure i
- Page 12 and 13: Stellar Evolution ! Stars form as a
- Page 14: Hertzsprung-Russell diagram ! Solar
- Page 17: Supernova remnant M1 (NGC 1952), th
- Page 22 and 23: Nucleosynthesis ! Solar (cosmic) ab
- Page 24 and 25: Nucleosynthesis in massive stars !
- Page 26 and 27: Fusion of Heavier Elements ! Alpha
- Page 28: Explaining Cosmic Abundances ! H an
Nucleosynthesis<br />
! Process forming elements heavier than He (or trace Li)<br />
! Determined from nuclear fusion calculations, solar abundances of<br />
elements, meteorite and comet compositions<br />
! Solar (cosmic) abundances of the elements<br />
• Obtained from spectrometric observation of the Sun’s s corona (emission<br />
lines from ions in the solar pho<strong>to</strong>sphere)<br />
• Not really “cosmic”,, because precise concentrations vary among stars<br />
• H and He are most abundant elements (primordial H, some He)
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