Indian Ocean Magnetic Anomaly and Fracture Zone Picks for Chrons 34y to 20o

This data set contains magnetic anomaly and fracture zone picks from the Indian Ocean for the Late Cretaceous and early Cenozoic that were used to calculate the Euler rotations published in Cande and Patriat (2015). The data set includes picks for 14 time intervals on the Southwest Indian Ridge and 17 time intervals on the Southeast Indian ridge. The data are in the input format used by the “Hellinger” software programs described by Chang (1988) and Royer and Chang (1991) to calculate Euler rotations and their uncertainties. The data include latitude, longitude and an uncertainty estimate and are organized by plates and segments that are fit by the software. The data include picks from three plates, Antarctica, Indian and Africa. The output files from the Hellinger programs are also included.

References

Cande, S.C., and P. Patriat, 2015. The anti-correlated velocities of Africa and India in the Late Cretaceous and early Cenozoic, Geophys. J. Int., 200, 227-243.

Chang, T., 1988. Estimating the relative rotation of two tectonic plates from boundary crossings, J. Am. stat. Assoc., 83, 1178–1183.

Royer, J.Y. and T. Chang, 1991. Evidence for relative plate motions between the Indian and Australian plates during the last 20 m.y. from plate tectonic reconstructions: implications for the deformation of the Indo-Australian plate, J. Geophys. Res., 96, 11779–11802.