TEPHRA AND PYROCLASTIC ROCKS. The rapid eruption of expanding gases results in the obliteration and fragmentation of magma and rock. The greater the explosivity, the greater the amount of fragmentation. Individual eruptive fragments are called pyroclasts (fire fragments).Tephra (Greek, for ash) is a generic term for any airborne pyroclastic accumulation.Whereas tephra is unconsolidated, a pyroclastic rock is produced from the consolidation of pyroclastic accumulations into a coherent rock type.he greater the explosivity, the greater the amount of fragmentation. Individual eruptive fragments are called pyroclasts (fire fragments). Tephra (Greek, for ash) is a generic term for any airborne pyroclastic accumulation.
Test the temperature of the milk with an instant-read thermometer once the milk has begun to steam and show small bubbles. Milk is considered to be scalded once it exceeds a temperature of 180 degrees F. Select a heat-proof measuring cup that is capable of holding at least twice as much milk as you wish to heat.
Organic Nonfat Milk. Where to Buy. Most people agree that our Organic Nonfat Milk is sweeter and richer than any skim milk they've ever tasted. It's the skim milk with the full-bodied flavor of low fat milk. Our Organic Nonfat Milk is pasteurized at 171Â°F for 18 seconds. Unlike most milk, which is ultra-pasteurized (at or above 280Â°F for at least two seconds), we preserve the true flavor of milk that results from our cowsâ diet.