good point :)
However the Skye gabbro is unique and not similar to any other. In many places when I was there it tended to switch gradually to something more like granite, but never very clearly.
Gabbro is definitively not a granite. Granite consists mainly of quartz (20-60%), alkali feldspar and mica. Gabbro consists of mainly plagioclase, up to 5 % quartz, pyroxene and olivine, thus linking it to the basaltic plutonites.
Quartz and feldspar rich gabbros can look similar to dark granites, maybe thats the point!
I think I'll give you some homework LOL Pop outside the city and compare the rocks on the top (or SE/S side) of Sleza Mtn and those on its NW flank at about 400m. :)
yatsek - Mar 25, 2010 5:29 pm - Voted 10/10
Rock TypeGabbro is not granite.
visentin - Mar 26, 2010 3:50 am - Hasn't voted
Re: Rock Typegood point :)
However the Skye gabbro is unique and not similar to any other. In many places when I was there it tended to switch gradually to something more like granite, but never very clearly.
yatsek - Mar 26, 2010 3:55 am - Voted 10/10
Re: Rock TypeLooks like a good page anyway. :) I'm not sure but some people may call gabbro 'black granite' or something like that.
selinunte01 - Mar 30, 2010 5:38 am - Voted 10/10
Re: Rock TypeGabbro is definitively not a granite. Granite consists mainly of quartz (20-60%), alkali feldspar and mica. Gabbro consists of mainly plagioclase, up to 5 % quartz, pyroxene and olivine, thus linking it to the basaltic plutonites.
Quartz and feldspar rich gabbros can look similar to dark granites, maybe thats the point!
visentin - Mar 30, 2010 7:38 am - Hasn't voted
Re: Rock Typeok, ok, ok guys... corrected ! :)
yatsek - Mar 31, 2010 4:52 am - Voted 10/10
Re: Rock TypeI think I'll give you some homework LOL Pop outside the city and compare the rocks on the top (or SE/S side) of Sleza Mtn and those on its NW flank at about 400m. :)
selinunte01 - Mar 31, 2010 7:06 am - Voted 10/10
Re: Rock TypeIt is a fantastic page anyway !!! What a wild and rugged landscape ... Cheers, Michael
visentin - Mar 31, 2010 7:54 am - Hasn't voted
Re: Rock TypeSeen the last one ?
http://www.summitpost.org/mountain/rock/608915/bruach-na-fr-the.html