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When Worlds Really Did Collide

When Worlds Really Did Collide. Iron meteorite cooling rates Compositional zoning Size of intergrowths. Intergrowths in taenite “cloudy zone”. Zoning in taenite. When Worlds Really Did Collide. Cooling rates of group IVA irons (fourth largest group) range over a factor of almost 100

carlos-cervantes
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When Worlds Really Did Collide

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  1. When Worlds Really Did Collide • Iron meteorite cooling rates • Compositional zoning • Size of intergrowths Intergrowths in taenite “cloudy zone” Zoning in taenite www.psrd.hawaii.edu/April07/irons.html

  2. When Worlds Really Did Collide • Cooling rates of group IVA irons (fourth largest group) range over a factor of almost 100 • Implies cooling of a metallic core with little or no rocky insulation • How do we produce a huge (300 km) blob of molten metal? www.psrd.hawaii.edu/April07/irons.html

  3. When Worlds Really Did Collide • Collisions of molten planetesimals may be the answer • Consistent with dynamical models of planetary accretion www.psrd.hawaii.edu/April07/irons.html

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