Iceland's Volcanic Glaciers - Sunday Stamps

I have four stamps from Iceland to show today which I believe meet the 'geology' theme,

Iceland - Snæfellsjökull

Snæfellsjökull, snow-fell glacier is a 700,000 year old stratovolcano with a glacier covering its summit in western Iceland The name of the mountain is actually Snæfell, but it is normally called "Snæfellsjökull" to distinguish it from two other mountains with this name.
The mountain is one of the most famous sites of Iceland, primarily due to the novel "A Journey to the Centre of the Earth" by Jules Verne, in which the protagonists find the entrance to a passage leading to the centre of the earth on Snæfellsjökull.

Iceland - Eiriksjökull & Öræfajökull

Eiríksjökull,"Eirík's glacier" is a glacier with an area of 22km² reaching a height of 1,675m making it the largest table mountain in Iceland. Rising over 1,000m (3,300 ft) above its surrounding, the lowest 350m (1,150 ft)  formed by a single subglacial volcanic activity is capped by a 750m thick lava shield. It is currently dormant or extinct in terms of volcanic activity.

Öræfajökull is an ice-covered and the largest active volcano in the country. On its north-western rim is Hvannadalshnukur, the highest peak in Iceland.

[Text modified from wikipedia]

For other mineral and geological wonders cross over to Viridian's Sunday-Stamps-117.