Under the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals. A related rock, dolomitic marble, is produced when dolostone is subjected to heat and pressure. Photo Gallery: The Many Uses of Marble.nder the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals. A related rock, dolomitic marble, is produced when dolostone is subjected to heat and pressure. Photo Gallery: The Many Uses of Marble.
1 Smoke the ribs at 225Â°F to 250Â°F for four to five hours. 2  You can baste or mop the ribs occasionally if you like, but donât open the grill too often. 3  Maintaining a steady temperature is the most important thing.
Source(s): http://www.ehow.com/how_2026885_easy-bbq... This Site Might Help You. How long should i bbq pork spare ribs on the bbq grill. I want to bbq pork spare ribs on the bbq. just on the bbq i don't want to put it in the oven, or do any thing else to it. so how long should i keep it on the grill. 3-4 hours on low heat, middle rack.