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Examine tectonic models for Antarctic Peninsula path and its implications on James Ross Basin development through plotted reconstructions. Includes comparisons with SAM movement and synthetic isochrons from rotated C34 picks.
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Antarctic Peninsula path since breakup: review and implications for James Ross Basin developmentMarta E. GhidellaInstituto Antártico Argentino
Introduction • Examine of the Antactic Peninsula path for four tectonic models: Ghidella et al (2002) Lawver et al (1999) Livermore – Nankivell – Eagles (1996, 1997, 2000) Jokat et al (2003) • Examine the relationship of the AP path with James Ross Basin development
Reconstructions • We are going to show reconstructions for the SAM movement, ANT kept fixed • We are not including the reconstruction of the Scotia plate • The plots include synthetic isochrons, calculated from rotated C34 picks. • The path of one point of the tip of the Antarctic Peninsula will be displayed for each epoch
Ghidella et al Reconstructions begin ... Next:
Ghi - 160 - SAM fixed Ghi – 160 - SAM fixed
Ghi – 0 – SAM fixed back
Lawver et al Reconstructions continue ... Next:
Law – 0 – SAM fixed back
Jokat et al Reconstructions continue ... Next:
Jo – 0 – SAM fixed back
Livermore – Nankivell - Eagles Reconstructions continue ... Next:
Liv – 0 – SAM fixed back
All paths at present Lawver Ghidella Jokat Livermore