Uranium In Space

"Most of the gold, platinum group metals, cobalt, and so on sunk to
the Earth's core, along with the heavy radioactive elements such as
uranium which help keep the core and mantle very hot."
http://www.digistar.mb.ca/minsci/future/ASTEROID2.HTM

"Hypothesis: A supernova occurred near the solar nebula at time of
its collapse (tremendous stellar explosion ejecting most of a star
into space). Our sun is a second generation star. There was an
earlier star/sun that exploded into a supernova, creating heavier
elements. Evidence: Iron is the heaviest element that can be
created in a star through nuclear reactions. Gold, silver, titanium,
uranium (all heavier elements than iron in sun and on Earth) were
created by neutron capture during a violent explosion marking the
end of a star's life."
http://www.gpc.peachnet.edu/~pgore/geology/geo101/intro.htm

"If a significant amount of potassium does reside in the Earth's
core, this would clear up a lingering question - why the ratio of
potassium to uranium in stony meteorites (chondrites), which
presumably coalesced to form the Earth, is eight times greater than
the observed ratio in the Earth's crust. .."
http://www.berkeley.edu/news/media/releases/2003/12/10_heat.shtml

"Cosmic rays shatter atomic nuclei in the asteroid's soil," explains
Trombka. Neutrons that fly away from the cosmic ray impact sites hit
other atoms in turn. "These secondary neutrons can excite atomic
nuclei (by inelastic scattering) without breaking them apart." Such
excited atoms emit gamma-rays that the GRS (gamma-ray spectrometer)
can decipher to reveal which elements are present. .. "We can detect
cosmic-ray excited oxygen, iron and silicon, along with the
naturally radioactive elements potassium, thorium and uranium," says
Trombka. Measuring the abundances of these substances is an
important test of the planetesimal hypothesis. .. Planetesimals
came to be when the solar system was just a swirling interstellar
cloud, slowly collapsing to form the Sun and planets. Dust grains
condensed within that primeval gas. The grains were small, but by
hitting and sticking together they formed pebble-sized objects that
fell into the plane of the rotating nebula. The pebbles accumulated
into boulders, which in turn became larger bodies, 1 to 100 km wide.
These were planetesimals -- the fundamental building blocks of the
planets. .. Fully-developed planets like Earth are chemically
segregated -- that is, they have heavier elements near their cores
and lighter ones at the surface.
http://occsec.wellington.net.nz/planet/news/news0102.htm

The content of three meteorites (including U content):
http://yamato.nipr.ac.jp/AMRC/abstracts/Dreibus.pdf

The Carswell structure hosts a number of unconformity-type uranium
deposits near the southern margin of the basement core. These were
brought to the surface by rebounding forces which formed the central
uplift.
http://www.ir.gov.sk.ca/Default.aspx?
DN=3728,3569,3539,3538,3385,2936,Documents

Note: Witwatersrand, a meteor impact structure, is abundant in Gold
and Uranium.

George
cygo.com