autochthonous

[ɔ'tɑkθənəs]

1. of rocks, deposits, etc.; found where they and their constituents were formed

2. originating where it is found;: "the autochthonal fauna of Australia includes the kangaroo"; "autochthonous rocks and people and folktales"; "endemic folkways"; "the Ainu are indigenous to the northernmost islands of Japan"