juxtaposition

juxtapositionは一般的には「並列」「並置」という意味ですが、ここではどうでしょうか。Minnesotaくん、どうぞ。（GP）

Deadliest balloon crash in decades kills 19 in Egypt

By Tuesday afternoon, the number of dead had climbed to 19, making it the world's deadliest hot air balloon accident in at least 20 years.

"This juxtaposition of this great beauty and this wonderful country and this horrible tragedy is just really shocking," Michel told CNN. "We all feel terrible."

http://edition.cnn.com/2013/02/26/world/africa/egypt-balloon-deaths/index.html?hpt=hp_t1