Among the three major types of rock, fossils are most commonly found in sedimentary rock. Unlike most igneous and metamorphic rocks, sedimentary rocks form at temperatures and pressures that do not destroy fossil remnants.ost sedimentary rocks contain either quartz (especially siliciclastic rocks) or calcite (especially carbonate rocks). In contrast to igneous and metamorphic rocks, a sedimentary rock usually contains very few different major minerals.
How many tons for a 1500 sq ft home. I have been getting bids for an ac unit in my home and I have been getting a range of 3 tons to 3.5 tons. I live in Dallas Texas and my home is pretty well shaded during the days and the majority of my windows face north or south.
Let me take a density of 100 pounds per cubic foot as an example. There are 3 feet in a yard so. 100 lb/ft 3 = 100 lb/ft 3 Ã 3 3 /1 ft 3 /yd 3 = 2700 lb/yd 3. Since there are 2000 pounds in a ton this is 2700.2000 = 1.35 tons per cubic yard and thus 15 cubic yards weighs 1.35 Ã 15 = 20.25 tons.t depends on the density of the topsoil they are selling. I found a table that may help somewhat, but the density in pounds per cubic foot varies from 78 to 125 pounds per cubic foot. (Look in the table under earth.) If you know the density you can calculate the weight in tons of 15 cubic yards.