Can the following processes happen?
1 Long term of oceanic subduction took place at first.
2 Afterwards, due to slab roll-back or slab breakoff, the tectonic setting switch from compression to extension.
3 After a period, the subduction cease.
If it is not feasible, can you give me some other possibilities that active continental margin can be transformed to passive continental margin?
Dear Mr. Rurui.
the answer is simply yes. It is only a question of time which lies between the formation of these very contrasting geodynamic settings. There are numerous crustal sections where you can find interlocked with each other lithologies indicative of both settings.
Best regards
H.G.Dill
I recommend you look up the Wilson/Supercontinent Cycle. After continent-continent, or arc-continent collision above a subduction zone, a collisional or accretionary orogen may form. There are plenty of examples of such orogens localising strain during rifting at much later stages (e.g. the North Atlantic between Greenland and Norway opened along the Caledonides).
On a shorter timescale, it is possible that slab breakoff might lead to a jump in the location and polarity of subduction to the opposite side of the oceanic plate. This would leave your paleo-subduction zone as a passive margin.
I think an active continental margin can turn a passive continental margin.
convergence occurs when a continental lithospheric plate converges along a subduction zone. This convergence may evolve to a collision and cicatrization of the area. after some time this area can recativer moving diverging which leads to the formation of passive margins.
to understand better try to see this file;
https://www.univ-orleans.fr/sites/default/files/OSUC/documents/conf_ensciterre_thinon_nov2013_br.pdf
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