(a) Whenever it appears that the official corporate limits as shown by the records of the Secretary of State for any city or incorporated town have for more than ten (10) years included an area or territory that has not been recognized by city or incorporated town officials and assessed for taxation as a part of the city or incorporated town during the period, because of error or otherwise, and which has not been legally detached from the city or incorporated town, then the city or incorporated town council may designate and determine by resolution for any portion of the area or territory which it believes is unsuitable for urban development in the foreseeable future, that it is no longer necessary for corporate purposes, and that it desires to officially detach the designated area or territory outside of its corporate limits, retaining the remainder of the unrecognized territory therein.
(b) A certified copy of the resolution shall then be filed with the county court of the county where the city or town is situated or the county where the area or territory affected is situated, together with a petition that a hearing be held by the court to determine whether the designated portions of the area or territory shall be officially excluded from the city or incorporated town limits.