Tokyo is contemplating Japanese names for rock formations on the Korean islets of Dokdo. A Cabinet meeting chaired by Prime Minister Yoshihiko Noda, the Japanese government decided to create Japanese names for the Dokdo peaks and register them with the Geospatial Information Authority of Japan, Kyodo News said Thursday.

The decision was made at the request of Liberal Democratic Party Senator Masahisa Sato. Japan is stepping up a campaign to push a flimsy colonial claim to Dokdo, which it calls "Takeshima."

The latest decision came in response to the Korean government's rechristening of the rock formations on the east and west sides of Dokdo last month.

Seoul decided to rename a rock formation on the east side Usanbong (98.6 m above sea level) and one on the west side Daehanbong (168.5 m) to stress Korea's territorial sovereignty.

The new names were derived from historical records and are to be used on official maps, textbook, and websites.

"If the news report is true, it's an intolerable violation of Korea's territorial integrity," a Foreign Ministry official said.