Mysle, ze "skrzyzowanie kultur" oddaje znaczenie "styku kultur".

http://tinyurl.com/6fahn49

--------------------------------------------------
Note added at 1 hr (2011-03-03 14:16:33 GMT)
--------------------------------------------------

In the wake of the culture concepts of the 1980s, translation has emerged as the central analytical term for the contact of cultures, while the poststructuralist idea of the infinite chain of the signification process has helped to establish it as a dynamic model.
http://tinyurl.com/66nxnga

Jeśli chodzi nie o zjawisko stykania się to propozycja Adama wydaje się dobra. Jeśli chodzi o miejsce/obszar albo sferę w której kultury się stykają - proponuję interface. Trochę mało kontekstu...
http://tinyurl.com/6fspm5f

Z Internetu:
Today, more than ever, we are conscious of the meeting of cultures and faith in our midst, and also of the welter of books and courses on spirituality such ...

As soon as the Georgians Goga and Irakli are accommodated in the family, color, life and love enters Marie’s life. With Goga, Marie falls in love for the first time. On the island, the encounter of cultures leads to clashes and reconciliation, to misunderstandings and fraternization...

--------------------------------------------------
Note added at 2 hrs (2011-03-03 15:05:12 GMT)
--------------------------------------------------

Jeszcze tak pomyślałam, że ewentualnie można dać "confrontation of cultures" w zależności od dalszego kontekstu.