Can't download audible books to MP3 player - not happy, Jan. So I sprang the 50 bucks to buy a generic Dick Smith MP3 player because I thought - oh joy - I'd be able to carry my entire audible library around with me on a device that's as small as a matchbox. So I download some audible books. They're there on the device.
A common example of an extrusive igneous rock is basalt. Some extrusive rocks, such as obsidian and pumice, cool so rapidly that they completely lack crystal structure and are considered a volcanic glass. Pumice is just like obsidian except it is tiny shards of glass.
Report Abuse. basalt-exrusive obsidian-extrusive pumice-extrusive granite-Intrusive Extrusive means its on the surface (on the ground). Intrusive means its below the earth's surface(in the ground) The first 3 are also volcanic rocks, a couple forming in the event of an eruption (obsidian and pumice).