A rheid /ˈriːɪd/ is a non-molten solid that deforms by viscous flow at least a thousand times faster than it would deform elastically under the same applied stress. The term, which was coined by S. Warren Carey in 1953, has the same Greek root as rheology, the science of viscoelasticity and nonlinear flow.
Almost any type of rock can behave as a rheid under appropriate conditions of temperature and pressure. For example, the Earth's mantle is believed to undergo convection over long time scales. As the mantle supports the propagation of shear waves, it may be deduced that it is a solid and, therefore, behaving as a rheid when it undergoes said convection. Granite has a measured viscosity at standard temperature and pressure of about 4.5×1019 Pa·s so it should be considered a rheid. Halite, the mineral form of salt, is a geological material that behaves as a rheid over relatively short time periods. As salt is buried by other types of sediments, it will often flow laterally towards regions of less confining stress. Through this mechanism, salt domes and other structures are formed. In some areas, such as the Gulf of Mexico, these structures often serve as traps for petroleum and natural gas.
You know you're livin' a lie when you just can't win
Pulling in first prize ain't gonna give you a break
You know I'm kickin' back, I had a broken wing
Me and my shadow are the next best thing
I need someone
You know it might take more than you give to me
Are you gun-shy, are you listening?
What we got here is dead reckoning
And take me in for the night in the right time zone
We'll do what you like, make a left turn home
I put out the light, you're turnin' way too red
No stop sign straight up ahead
You need so much
So much sympathy
That's more than I can say
You know it's not too late
Are you gun-shy, are you listening?
What we got here is dead reckoning
And if it feels good, we'll do it again
See your way clear, dead reckoning
Tell me why, tell me why
Are you listening?
Are you listening?
Are you listening?
Are you listening?
You mean so much
So much to me
That's more than I can say
You know it's not too late
Are you gun-shy, are you listening?
What we got here is dead reckoning
And if it feels good, we'll do it again
See your way clear, dead reckoning, yeah
What we got here is dead reckoning