Short geology of the Monte Rosa Massif

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Short geology of the Monte Rosa Massif

Page Type: Album

Image Type(s): Hiking, Informational, Scenery

Page By: Romuald Kosina

Created/Edited: Dec 16, 2007 / Dec 17, 2007

Object ID: 365657

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Page Score: 89.63% - 18 Votes

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Geology of a given region can be viewed by means of macro- and microstudy

The main snowy peaks of the Monte Rosa massif are composed of gneisses. This mass neighbours at the Stolemberg peak with Zermatt-Saas ophiolite geological unit. Going southward to Corno Rosso this ophiolitic geology meets the Combin meta-ophiolite near Lago Gabiet. Near Rifugio Citta di Mantova the migmatisation of rocks included pseudomorphosis after cordierite. In gneiss there are seen leucocratic dykes. There were here two types of parageneses, an older one characterized by high temperature and low pressure as well as a younger metamorphism made by means of high pressure. This geological activity changes many minerals, e.g. biotite, plagioclase, ilmenite and cordierite into new ones like garnet, phengite, quartz, rutile and kyanite. Between Punta Indren and Stolemberg we can observe gneiss with garnet-micaschists and eclogite stones having some amphibole coloured in blue (crossite and glaucophane). At a contact between of Monte Rosa gneiss and Zermatt-Saas ophiolite on slopes of Stolemberg one can also find some eclogite rocks consisting of omphacite, garnets and amphibole. On the Stolemberg peak the metabasalts are exposed. There is, on the southern slope of Stolemberg, a close contact between the Monte Rosa gneiss and serpentinite rocks of Corno del Camoscio. Here we can find amphibolite rocks with albite, talc and chlorites as well as some inclusions of metabasites in gneiss. Corno del Camoscio has also the mylonitic gabbro rocks and micaschists enriched by chloritite, epidote and tremolite. Main types of geological units and rocks in this area are marked on the attached diagram below.

The above data are also based on:
http://virtualexplorer.com.au/journal/2004/16/martin/field.html

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Viewing: 1-5 of 5

mulidivarese

wonderfull

Voted 10/10

wonderfull interesting page
please attach it to monte rosa pages

would be nice to read it

regards
valerio

Posted Dec 17, 2007 1:21 pm


	Romuald Kosina	Re: wonderfull
	Hasn't voted	Valerio, sorry!!! I did another comment but not as a reply. Thanks again!!!!! R.
		Posted Dec 17, 2007 1:27 pm

Romuald Kosina

Hi, Valerio!!!

Hasn't voted

Many thanks for your nice appreciation!!!
Each aspect of mountains is exciting!!!
:-)))
Romek

Posted Dec 17, 2007 1:25 pm

Dan Dalton

This is really well done...

Voted 10/10

and I love the geology! Very interesting for sure, great shots and well written. Would expect to see something like this in a regional geology guide.

Dan

Posted Dec 17, 2007 5:30 pm


	Romuald Kosina	Re: This is really well done...
	Hasn't voted	Hi, Dan!!!!!!!! I appreciate very much your opinion!!! I am going to prepare other such pages on geology of Polish mountains. Many thanks!!!!!! :-))) Romek
		Posted Dec 19, 2007 2:11 pm

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