The resolution welcomes the progress in negotiations between Colombia's government and the Revolutionary Armed Forces of Colombia and notes their joint request last week for a UN monitoring mission.
In a rare move for the often-divided council, all 15 members co-sponsored the resolution yesterday.
The request sent a strong signal that a March 23 deadline to wrap up peace talks could be within reach.
"Finally, our continent will have life without conflict," the country's foreign minister Maria Angela Holguin Cuellar told reporters. She said her country hopes to meet the March deadline.
More From This Section
The mission will be made up of unarmed observers from Latin American and Caribbean nations.
Decades of fighting between guerrillas, right-wing paramilitaries and the armed forces has left more than 220,000 dead, some 40,000 disappeared and over 5 million driven from their homes.
"It isn't common for a country to refer itself to the council. But it's exactly the kind of role the United Nations should be playing" in conflict resolution, British Ambassador Matthew Rycroft said. "I hope today will mark the start of the final stage of peace talks."
It recognises that the two sides have asked the UN to participate as the "international component."
The resolution asks UN Secretary-General Ban Ki-moon to present detailed recommendations on the political mission's size and operation to the council for its approval within 30 days of a cease-fire.
US Ambassador Samantha Power warned, however, that plenty of work lies ahead, including the removal of land mines and the re-integration of fighters into the population. The UN says that globally, Colombia has the second-highest number of new victims of mines registered each year.