rhyodacite वाक्य
उदाहरण वाक्य
मोबाइल
- Geologists describe these rocks as platy rhyodacite and are visible in the cliffs that surround Rainbow Falls.
- A dozen more dacite and rhyodacite lava domes are found on the flanks of the volcano below the caldera rim.
- There is, however, a possibility that a large reservoir of rhyodacite magma may exist under the Azul Descabezado complex.
- The Tuzgle volcano proper is constructed from an older rhyodacite-mafic series and a more recent series constructed from andesites alone.
- On the east side of the Affliction Glacier, rhyodacite of the Job Assemblage overlies porphyritic andesite of the older Pylon Assemblage.
- Both domes are formed by rhyodacite and accompanied by pyroclastic deposits . covers a surface area of and reaches a height of.
- Mammoth Mountain is a lava dome complex in the southwestern corner of the caldera, consisting of about 12 rhyodacite and dacite overlapping domes.
- Ten additional small domes of Glass Mountain rhyolite and rhyodacite lava lie on a N25degreesW trend to the north and one to the south.
- Around 5677 BC Mazama awoke from its slumber with explosive rhyodacite eruptions on the northern part of the main summit where Llao Rock now resides.
- Andesite-rhyodacite intrusions occurred beneath the volcano, some of these were still hot when the Soncor eruption tore them out of the ground.
- The Incapillo ignimbrite is formed by potassium-rich and magnesium-poor rhyodacite, forming glassy and porous pumice with individual clasts of in diametre.
- A volcanic origin was once theorized because of the discovery of basalt and rhyodacite outside of the crater basin, but current evidence clearly indicates an impact origin.
- Deakin Volcanics green grey, purple and cream rhyolite occurs over most of the suburb and Deakin Volcanics green grey and purple rhyodacite is found in the far south east corner.
- Mount Mazama, part of the Cascade Range volcanic arc, was built up mostly of andesite, dacite, and rhyodacite over a period of at least 400, 000 years.
- Mazama's next major eruptive period occurred between 25, 000 and 30, 000 years ago and extruded rhyodacite lava ( which has a higher silica content than dacite ).
- Lava eruptions later created a central platform, Wizard Island, Merriam Cone, and other, smaller volcanic features, including a rhyodacite dome that was eventually created atop the central platform.
- Mount Cayley consists mostly of an igneous rock with a high iron content called dacite, although another igneous rock, rhyodacite, with intermediate composition of dacite and rhyolite is also present.
- The term quartz keratophyre has traditionally been used in the Nordic countries to describe a metamorphosed, felsic extrusive rock, corresponding to rhyolite, dacite, or rhyodacite according to IUGS terminology.
- "' Middle Sister "'also known as " Hope, " is a stratovolcano consisting primarily of basalt, but it also has erupted andesite, dacite, and rhyodacite.
- Wanniassa is underlain by Deakin Volcanics from the Silurian age 414 million years old-cream-green and purple rhyodacite in the eastern half, with tuff, agglomerate and rhyolite in the west.
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