Have you heard about utica shale or the process of fracking?
你听说过尤蒂卡的页岩 或水力压裂技术吗?
英语百科
Utica Shale
The Utica Shale is a stratigraphical unit of Middle Ordovician age in the Appalachian Basin. It
underlies much of the northeastern United States and adjacent parts of Canada.
It takes the name from the city of Utica, New York, as it was first described as an outcrop along the Starch Factory Creek east of the city by Ebenezer Emmons in 1842.