There are literally dozens of good project management software applications out there, with Microsoft Project being one of the most popular mid-range project management packages, and the likes of Primavera being popular at the higher end. 1  IT leadership & CW500.  IT architecture.
The most common intrusive rock is granite, whereas the most common extrusive rock is basalt.
Sketch of magma deep in the earth (right): USGS Images. Intrusive vs. Extrusive Igneous rocks can be classified into two main categories: intrusive and extrusive. A trick to help kids remember intrusive and extrusive is to think of intrusive -- inside and extrusive -- exit. Intrusive rocks come from magma.They cool slowly deep in Earth's crust.ntrusive vs. Extrusive Igneous rocks can be classified into two main categories: intrusive and extrusive. A trick to help kids remember intrusive and extrusive is to think of intrusive -- inside and extrusive -- exit. Intrusive rocks come from magma. They cool slowly deep in Earth's crust.