Submit. Â· just now. Report Abuse. First, I'd say it depends on your age. If you're younger, they may only go back 5 or so years, but if you're into your 30s or so, they'll probably go back 10 years (or you should have 10 years on your resume, at least -- they may not actually verify as in call back that far).
Granite and basalt are both igneous rocks-they are formed from magma extruded into another rock layer or from expulsion from a volcano.The heat of the cooling rock would completely melt any fossils they came into contact with and destroy them, so you don't see fossils in these rocks.asalt is the foundation of oceanic crust. Granite is an intrusive igneous rock made from visible mineral crystals, a result of cooling over a longer period of time under the surface of the Earth. Another difference between basalt and granite include their joints.
Ultrabasic rocks are composed of less than 45% silica and contain no quartz or feldspar. They are composed mainly of the minerals olivine and pyroxene. The most common ultrabasic rock is periodite. Periodite is a dark green, coarse-grained igneous rock that many scientists believe is the main rock of the mantle.Basalts are dark colored, fine-grained extrusive rock.ost basalts are volcanic in origin and were formed by the rapid cooling and hardening of the lava flows. Some basalts are intrusive having cooled inside the Earth's interior. Granite is an igneous rock that is composed of four minerals. These minerals are quartz, feldspar, mica, and usually hornblende.