For metalman, fro Gregor.us.
Overhead Crush
A concept that’s key to resource depletion is the higher volatility phase, in which both price and supply start to hit ceilings and floors in accelerated fashion. This tends to appear first during the actual peak supply period, or peak plateau period. The pattern has been seen in previous eras in such things as wood, fish, and whale oil. When the post-peak phase gets underway the price amplitude increases even further, playing havoc with supply and demand. As demand gets killed, and then finally collapses, it causes confusion about supply. But then, as demand returns, any questions about supply are soon answered as demand once again bumps up against the supply ceiling.
Visually, we can think of demand in this phenomenon as being in a kind of contracting triangle. Every time consumption resumes after a previous demand crash, it hits the ceiling at a lower level. This is the point where, if you find yourself living in the age of biomass and wood, you get rescued by coal. For example. This is also the point where, if you are living in the age of oil, it’s less likely you get rescued.
![](http://gregor.us/wp-content/uploads/2009/06/contracting-triangle.gif)
...
A concept that’s key to resource depletion is the higher volatility phase, in which both price and supply start to hit ceilings and floors in accelerated fashion. This tends to appear first during the actual peak supply period, or peak plateau period. The pattern has been seen in previous eras in such things as wood, fish, and whale oil. When the post-peak phase gets underway the price amplitude increases even further, playing havoc with supply and demand. As demand gets killed, and then finally collapses, it causes confusion about supply. But then, as demand returns, any questions about supply are soon answered as demand once again bumps up against the supply ceiling.
Visually, we can think of demand in this phenomenon as being in a kind of contracting triangle. Every time consumption resumes after a previous demand crash, it hits the ceiling at a lower level. This is the point where, if you find yourself living in the age of biomass and wood, you get rescued by coal. For example. This is also the point where, if you are living in the age of oil, it’s less likely you get rescued.
![](http://gregor.us/wp-content/uploads/2009/06/contracting-triangle.gif)
...
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