The phrase "alkaline volcanic" is correct and usable in written English.
It can be used in geological or scientific contexts to describe a type of volcanic rock or activity that is characterized by a high pH level.
Example: "The region is known for its unique alkaline volcanic formations, which attract researchers from around the world."
Alternatives: "basic volcanic" or "high-pH volcanic".
Petrified Redwood Stumps: The fossilization process known as petrifaction usually begins when a tree or log is buried in silica-rich, alkaline volcanic ash or mud.
Geologically, the CVL is a 1,600 km-long Tertiary Recent intraplate alkaline volcanic province that trends NE SW, from the Atlantic Ocean through the Gulf of Guinea onto African continental lithosphere (Fitton and Dunlop 1985).
Higher concentrations of fluorine are found in alkaline volcanic, hydrothermal, sedimentary, and other rocks derived from highly evolved magmas and hydrothermal solutions, and this fluorine dissolves into nearby water as fluoride.
It is associated with living in areas with high altitude and high seasonal rainfall, and is caused by exposure of bare feet to alkaline volcanic clay soils. 1 Mineral particles are thought to penetrate the skin, causing an inflammatory reaction leading to lymphedema.
Appendix 2 is an update of the 2005 edition appendix and deals with classification of orogenic rocks with special emphasis on potassic alkaline volcanics.
Neogene alkaline basaltic volcanic fields in the western Pannonian Basin, Hungary, including the Bakony Balaton Highland and the Little Hungarian Plain volcanic fields are the erosional remnants of clusters of small-volume, possibly monogenetic volcanoes.
Lesser flamingos in East Africa's Great Rift Valley migrate when lakes recede or become too alkaline from volcanic ash, for example, and humpback whales migrate thousands of miles to breed.
The Rift Valley also has a string of lakes, most of which have been transformed into alkaline waters by volcanic ashes.
The exposure of Mudeungsan Tuff at the summit of Mt. Mudeung (Cheonwang-bong) and at Mt. Anyang were welded crystal tuff with dacitic composition and were generated from cogenetic calc-alkaline magma in the volcanic arc environment.
Another intriguing feature of archaea is their unusual ability to survive and thrive in the extreme environmental conditions, such as in thermal vents, volcanic springs, hypersaline basins, alkaline lakes, acid mines, or even in petroleum deposits at deep underground which is completely devoid of oxygen.
Alkaline and peralkaline lava flows from four volcanic episodes make up an 845 m composite section on the north flank of the shield volcano.
