By Eliana Raszewski, Leila Miller and Jorge Otaola BUENOS AIRES (Reuters) -A dramatic ruling by a U.S. court ordering Argentina to hand over the 51% stake it holds in state energy firm YPF has cast a shadow over the country's plans for its huge Vaca Muerta shale formation and hopes to return to global markets.

US judge orders state to turn over its controlling stake in state-run oil company YPF SA as partial payment of a US$16-billion court judgment.

A federal judge in New York ordered Argentina on Monday to sell its majority stake in oil firm YPF, the latest blow to Buenos Aires in a decade-long international legal