connate is a verb

connate The term connate fluids in the context of geology, and of sedimentology in particular, refers to the liquids that were trapped in the pores of sedimentary rocks as they were deposited. These liquids are largely composed of water, but also contain many mineral components as ions in solution. As rocks are buried, they undergo lithification and the connate fluids are usually expelled. If the escape route for these fluids is blocked, the pore fluid pressure can build up, leading to overpressure

This is a fossil interstitial water which is migrated from its original burial location. This water may have been derived from oceanic or fresh water sources and typically is highly mineralized.