Which preposition to use with convergence

of Occurrences 15%

But, as a matter of fact, the amount of convergence of series, in relation to the time occupied by the deposition of geological formations, is extraordinarily small.

between Occurrences 1%

The subject is one on which there is no possible means of convergence between persons who have learned to differ.

in Occurrences 1%

Here a sudden convergence in the rocks compresses its channel, and with a gurgling, choking struggle, it leaps with a single bound, sheer from an even level shelf, into the tremendous chasm.

towards Occurrences 1%

And it is a broad fact that, the lower we go in the scale of organization, the fewer signs are there of convergence towards the primitive form from whence all must have diverged, if evolution be a fact.

Which preposition to use with  convergence