GRAND ISLE, La. AP – Thick, sticky oil crept deeper into delicate marshes of the Mississippi Delta, an arrival dreaded for a month since the crude started spewing into the Gulf, as anger and frustration mounted over efforts to plug the gusher from a blown-out well and contain the spill.

Up to now, only tar balls and a sheen of oil had come ashore. But chocolate brown and vivid orange globs and sheets of foul-smelling oil the consistency of latex paint have begun coating the reeds and grasses of Louisiana’s wetlands, home to rare birds, mammals and a rich variety of marine life.