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.
Tonnage â¦ the unit of measure used in air conditioning to describe the cooling capacity of a system. One ton of cooling is based onthe amount of heat needed to melt one ton (2000 lbs.) of ice in a 24hour period. As a rule of thumb, 400 square feet can be cooled per 12,000 BTU/hr (12,000 BTU/hr equals one ton of air conditioning). However, other factors which will also affect the total heat load. â¢ Simply put, a one-ton air conditioner can remove 12,000 BTU from a space per hour.