Evolution of the Solar System Inferred from Sm Nd Isotopic Studies - Lar...
Δημοσιεύτηκε στις 24 Ιουν 2016
Dr.
Borg has recently conducted high precision SmNd isotopic analyses of a
suite of 11 Martian basaltic meteorites in order to better constrain the
age of planetary core formation on Mars. Dr. Borg will show how these
data can be used to evaluate the merits and disadvantages of various
mathematical approaches that have been employed in previous isotopic
work on Martian core formation.
Dr. Borg will explain how Late
accretional heating of Mars could either be associated with protracted
accretion occurring at a quasi-steady state or alternatively be
associated with a late giant impact. If this scenario is correct, then
accretion of Mars-sized bodies takes up to 60 Ma and is likely to be
contemporaneous with planetary core formation.
Dr. Borg will
explain how this further challenges the concept that isotopic
equilibrium is attained during primordial evolution of planets, and may
help to account for geochemical evidence implying addition of material
into planetary interiors after core formation was completed.
Borg has recently conducted high precision SmNd isotopic analyses of a
suite of 11 Martian basaltic meteorites in order to better constrain the
age of planetary core formation on Mars. Dr. Borg will show how these
data can be used to evaluate the merits and disadvantages of various
mathematical approaches that have been employed in previous isotopic
work on Martian core formation.
Dr. Borg will explain how Late
accretional heating of Mars could either be associated with protracted
accretion occurring at a quasi-steady state or alternatively be
associated with a late giant impact. If this scenario is correct, then
accretion of Mars-sized bodies takes up to 60 Ma and is likely to be
contemporaneous with planetary core formation.
Dr. Borg will
explain how this further challenges the concept that isotopic
equilibrium is attained during primordial evolution of planets, and may
help to account for geochemical evidence implying addition of material
into planetary interiors after core formation was completed.
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