Palagonite is an alteration product from the interaction of water with volcanic glass of chemical composition similar to basalt. Palagonite can also result...

Sideromelane is a vitreous basaltic volcanic glass, usually occurring in palagonite tuff, for which it is characteristic. It is a less common form of tachylite...

They are made up of lava plateaus capping extensive pillow lavas and palagonite. These volcanoes are also called table mountains, tuyas, or (in Iceland)...

tachylyte. Palagonite, an alteration product of basaltic glass. Hyaloclastite, a hydrated tuff-like breccia of sideromelane and palagonite. Pele's hair...

(IMA/CNMNC valid mineral name) Ozokerite, a black waxy hydrocarbon mixture Palagonite Pearl, organically produced carbonate Pele's hair Petroleum, liquid, organic...

processes. Palagonite tuffs are found also among the older volcanic rocks. In Iceland a broad stretch of these rocks, described as "the palagonite formation...

cause them. The products of Surtseyan eruptions are generally oxidized palagonite basalts (though andesitic eruptions do occur, albeit rarely), and like...

The stratified tuff is composed of sideromelane, slightly altered to palagonite, and somewhat lithified. The tuff contains lithic fragments of older lava...

Fragments of these glasses are usually surrounded by a yellow waxy layer of palagonite, formed by reaction of sideromelane with water. Hyaloclastite ridges,...

progressive erosion by flowing water from glaciers through the rocks and palagonite over millennia. A waterfall flows down the western side of the canyon...

The glassy basaltic ash produced in such eruptions rapidly alters to palagonite as part of the process of lithification. Although conventional mafic volcanism...

retrieved 8 July 2008 Jakobssen, Sveinn P. (6 May 2007), The Formation of Palagonite Tuffs, The Surtsey Research Society, retrieved 8 July 2008 Twenty-seven...

flows from Washington exhibit breccia with plagioclase and olivine, with palagonite tuff at the northeastern slope of the mountain that might indicate a past...

(in three main channels). The cliff supporting Gluggafoss has an upper palagonite (or tuff rock) portion and a lower basalt portion. Distinctive of Gluggafoss'...

built up in submarine eruptions and consist of alternating layers of palagonite tuff and lava. The oldest geological formations are in the northern part...

is a 221 m (725 ft)-high inselberg in southern Iceland. It consists of palagonite. The mountain is located on the Mýrdalssandur outwash plain about 15 km...

spatter, cinders, extensively weathered ʻaʻā and pahoehoe lava flows and palagonite tuff. Spatter and cinders contain abundant xenoliths of mafic and ultramafic...

is the remnant of a 700,000‑year‑old volcano, mostly made of volcanic palagonite tuff, forming a massive rock fortress. The island was first mentioned...

system, surrounded the mountain later. Helgafell is made mostly from palagonite, i.e. palagonitized tephra, dikes and a small amount of pillow lava. Helgafell...

thicknesses (between centimetres and metres thick) forming a lithificated palagonite tuff. The island's temperate climate and Monte Brasil's micro-climate...

mafic composition than the other two volcanoes. Its deposits are rich in palagonite and red and black cinders, and they are progressively more iron-rich the...

glassy rock palagonite. Many of the erupted rocks have undergone various degrees of alteration, including the formation of zeolitic palagonite; minerals...

than 1% of the edifice. Ice-lava interactions produced hyaloclastite, palagonite and sideromelane. No major changes in magma chemistry occurred during...

formed in the ice cap by the magmatic heat. The middle yellow layers are palagonite weathering of steeply dipping ash layers. The top caprock is composed...

and China. In Iceland, it is found at only two locations, growing on palagonite cliffs, and has the conservation status of a vulnerable species (VU)....

mound on top of Ingólfsfjall. Ingólfsfjall consists mostly of basalt and palagonite and has its origin in subglacial eruptions which turned in the end subaerial...

671m and are thus the highest in Iceland. Most of Lómagnúpur is made of palagonite, but there are also layers of lava (e.g. pillow lava and lava columns)...

produced basalt, which in this field contains carbonatite, olivine or palagonite. The basalts range from alkali basalts to tholeiites. Volcanism may have...

cubic kilometre (0.24 cu mi). These landforms along with the presence of palagonite indicate that the eruptions happened beneath glaciers. Volcanic activity...

fluid flow (at the time of deposition) visible in a rock. paleontology palagonite An alteration product from the interaction of water with volcanic glass...