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.
Full Answer. Magma that cools and hardens above ground creates extrusive igneous rock, whereas magma that cools underground forms intrusive igneous rock. Extrusive igneous rock hardens quickly and tends to be very small. Examples of this type of rock are obsidian, pumice and basalt.