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.
600 spf A good general rule of thumb is 20 BTU per square foot. So, a 200 sf room would require a 4000 BTU ac unit. If you use 20btu per square foot to determine the required tonnage, you will be under sizing your system. For example 20btux1500sf=30000btu. There are 12000 btu per ton so you are using a 2.5 ton system to cool 1500 sf.