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Apache tears are rounded pebbles of obsidian or "obsidianites" composed of black or dark-colored natural volcanic glass, usually of rhyolitic composition and bearing conchoidal fracture. Also known by the lithologic term marekanite , this variety of obsidian occurs as subrounded to subangular bodies up to about 2 in (51 mm) in diameter, often ...
Apache tears, a kind of nodular obsidian. Tachylite (also spelled tachylyte), a basaltic glass with relatively low silica content. Sideromelane, a less common form of tachylyte. Palagonite, an alteration product of basaltic glass. [8] Hyaloclastite, a hydrated tuff-like breccia of sideromelane and palagonite.
Pele's tears are also found entangled within fine strands of volcanic glass known as Pele's hair and it was considered that they formed together under similar conditions. [1] Shimozura (1994) investigated this further and found that the velocity of the erupting lava was the main factor in determining whether Pele's tears or Pele's hair were formed.
Apache tears – Popular term for pebbles of obsidian; Helenite – Artificial glass made from volcanic ash; Hyaloclastite – Volcaniclastic accumulation or breccia and tachylite – volcanic glasses with basaltic composition; Knapping – Shaping of conchoidal fracturing stone to manufacture stone tools
Pele's hair, with a hand lens as scale Strands of Pele's hair under microscope view. Pele's hair (closest modern Hawaiian translation: "lauoho o Pele " [1]) is a volcanic glass formation produced from cooled lava stretched into thin strands, usually from lava fountains, lava cascades, or vigorous lava flows.
The Centre of Volcanology and Geological Hazard Mitigation recommended that a 7 km (4.3 mi) radius around the volcano be evacuated. [75] Seven villages were affected by the eruption. [76] A larger eruption occurred on 7 November. [77] On 8 November, the volcano erupted several times, one bearing an ash plume with a height reaching 10 km (6.2 mi ...
2020–2022 Taal Volcano eruptions: 38 Dieng Volcanic Complex: 2 Indonesia: 1786 [30] 32 Mount Nyiragongo: 1 Democratic Republic of the Congo: 2021 2021 Mount Nyiragongo eruption: 32 Kelud: 4 Indonesia: 1990 [40] 31 Bayonnaise Rocks: 2 Japan: 1952 [41] 31 Nabro Volcano: 4 Eritrea: 2011 2011 Nabro eruption: 30 Rinjani: 3 Indonesia: 1994 [42] 27 ...
The field lies within the San Carlos Apache Reservation about 40 km (25 mi) east of Globe, Arizona. It is a small field covering approximately 50 km 2 or less of volcanic cones and lava flows. The basanite to hawaiite basaltic flows contain xenoliths of peridotite .