Daryl Hannah was taken into custody for criminal trespassing and resisting arrest and held at the Wood County Jail in Texas after she and a landowner stepped in front of machinery to halt the construction of an oil pipeline.
Daryl and Eleanor Fairchild, 78, were hoping to stop the progress of TransCanada's Keystone XL pipe through the latter's farmland in Winnsboro - which was subject to a compulsory purchase order for the project - almost a hundred miles east of Dallas.
The pipeline is designed to bring crude oil from Canada to the Gulf Coast.
Daryl's agent, Paul Bassis, said the protesters were likely to be kept in jail last night, adding: "They've arrested Daryl Hannah and a rural Texas great-grandmother. The streets of Winnsboro will be much safer tonight now that they've gotten that 78-year-old great-grandmother off the streets."
Daryl was previously arrested for protesting against the pipeline in Washington D.C. in 2011.
She and other activists believe it will carry heavy, acidic crude oil that could corrode a metal pipeline and lead to a spill. They also claim that by not refining the oil, it would further contaminate the air in a region that struggles with pollution.