Subduction Initiation in Nature and Models

A presentation on Subduction Initiation by Dr. Robert Stern and Dr. Taras Gerya. Originally presented at GSA 2019 in Phoenix.
Subduction Initiation References
Arculus, R.J., Gurnis, M., Ishizuka, O., Reagan, M.K., Pearce, J.A., and Sutherland, R., 2019. How to Create New Subduction Zones: A Global Perspective. Oceanography 32, 160-174.
Faccenda, M., Gerya, T.V., and Chakraborty, S., 2008. Styles of post-subduction collisional orogeny: Influence of convergence velocity, crustal rheology, and radiogenic heat production. Lithos 103, 257-287.
Gurnis, M., Hall, C., Lavier, L., 2004. Evolving force balance during incipient subduction. Geochem. Geophys. Geosyst. 5, Q07001. dx.doi.org/10.1029/2003GC000681
Ishizuka, O., and 9 others, 2011. The timescales of subduction initiation and subsequent evolution of an oceanic island arc. Earth and Planetary Science Letters 306, 229-240.
Nikolaeva, K., Gerya ,T.V., Marques, F.O. 2011. Numerical analysis of subduction initiation risk along the Atlantic American passive margins. Geology, 39, 463-466.
Shafaii Moghadem, H., Corfu, F. and Stern, R.J., 2013. U-Pb zircon ages of Late Cretaceous Nain-Dehshir ophiolites, Central Iran. J. Geol. Soc. London 170, 175-184.
Stern, R. J., Bloomer, S. H. , 1992. Subduction zone infancy: Examples from the Eocene Izu-Bonin-Mariana and Jurassic California Arcs. Geol. Soc. Am. Bull., 104, 1621-1636.
Stern, R.J., and Dumitru, T., in press. Eocene Initiation of the Cascadia subduction zone: A second example of Plume-Induced Subduction Initiation?
Geosphere doi.org/10.1130/GES02050.1
Stern, R.J., and Gerya, T., 2018. Subduction Initiation in nature and models: A review. Tectonophysics 746, 173-198.
Ueda, K., Gerya, T., Sobolev, S.V., 2008. Subduction initiation by thermal-chemical plumes: numerical studies. Phys. Earth Planet. Inter. 171, 296-312.
Whattam, S., and Stern, R.J., 2015. Late Cretaceous Plume-induced Subduction Initiation along the southern and eastern margins of the Caribbean: The first documented example with implications for the onset of plate tectonics. Gondwana Research 27, 38-63.
Zhou, X., Li, Z.-H., Gerya, T.V., Stern, R.J., Xu, Z., and Zhang, J., 2018. Subduction initiation dynamics along a transform fault control trench curvature and ophiolite ages. Geology 46, 607-610.
Other References
Azizi, H., and Stern, R. J., in press. Jurassic igneous rocks of the Sanandaj-Sirjan zone of Iran mark a propagating rift, not a magmatic arc. Terra Nova.
Davison, I., Faull, T., Greenhalgh, J., Beirne, E.O., and Steel, I., 2015. Transpressional structures and hydrocarbon potential along the Romanche Fracture Zone: a review. Geological Society, London, Special Publications, 431, 235-248.
Hanyu, T., and 12 others. 2017. Collision-induced post-plateau volcanism: Evidence from a seamount on Ontong-Java Plateau. Lithos 294-295, 87-96,
Hunter, J., and A. B. Watts, 2016. Gravity anomalies, flexure and mantle rheology seaward of circum-Pacific trenches. Geophysical Journal International 207, 288-316.
Petterson, M., and 10 others, 1999. Geological-tectonic framework of Solomon Islands, SW Pacific: Crustal accretion and growth within an intra-oceanic setting. Tectonophysics 301, 35-60.
Credits:
Plate Tectonic Basics 1: • Plate Tectonics Basics 1
30a.com/facts-about-pacific-o...
GeoMapApp
Wikipedia “Passive Margin”
Geoclasses “Wilson Cycle”
Thanks to Zach Clowdus for filming RJS and putting together this video!

[@PlayNowWorkLater]

Really enjoyed this! Very informative

[@Octothorp3]

This video helped me with my final project and helped me graduate college. Thank you Dr. Stern!

[@moamenalmaz3395]

We as young geologists need these kind of videos. Thanks!

[@nilsandersson4983]

Nice video, well presented and comprehensible, thanks!

[@quahjiayong8558]

Excellent video! Really clear and I enjoyed it alot, thank you!:)

[@stephenrider6107]

This is very cool! I'm not a geophysics major and I found this super helpful!

[@victorfergn]

Thanks to this video now I know this part of the planet is doomed, I live in the southern part of the Argentine-Brazilian margin.