Pumice quarry, Gyali Islet, Nisyros, Kos, South Aegean, Greecei
| Regional Level Types | |
|---|---|
| Pumice quarry | Quarry (Active) |
| Gyali Islet | Islet |
| Nisyros | Municipality |
| Kos | Regional Unit |
| South Aegean | Administrative Region |
| Greece | Country |
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Latitude & Longitude (WGS84):
36° 39' 31'' North , 27° 6' 44'' East
Latitude & Longitude (decimal):
Type:
Quarry (Active) - last checked 2025
Age:
0,035 BP to 0,031 BP Ma
Geologic Time:
Dating method:
Stratigraphy, sediment accumulation
Reference for age:
Volcano Global Risk Identification and Analysis Project (VOGRIPA) Website
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mandráki | 682 (2012) | 5.6km |
| Páloi | 167 (2016) | 7.0km |
| Kardámaina | 1,926 (2016) | 14.1km |
| Kéfalos | 2,528 (2016) | 16.7km |
| Antimácheia | 2,251 (2016) | 16.7km |
Yali (Gyali), a small crescent-shaped island between the N coast of Nisyros and the SW coast of Kos islands, consists of rhyolitic obsidian domes and pumice deposits. It lies within the inferred location of the large submarine caldera associated with the eruption of the voluminous Kos Plateau Tuff, about 160,000 years ago, which produced extensive ignimbrites that cover much of the western half of Kos island and which produced a caldera of uncertain dimensions but one that could extend from Kefalos Bay on the SW side of Kos to Nisyros. Yali is oriented NNE-SSW and contains two distinct segments connected by a narrow isthmus formed of modern reef sediments. The SW part of the island consists primarily of a layered pumice-fall unit about 200 m thick; the NE part contains rhyolitic obsidian lava flows of similar thickness. Pumice deposits overlie soils containing pottery and Neolithic obsidian artifacts (Keller, 1982), but radiometric tephra dates are all older than 30,000 years.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramList of minerals for each chemical element
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Gyali |
|---|---|
| Wikidata ID: | Q966918 |
Other Regions, Features and Areas containing this locality
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References
[3]NAGEL Baustoff GmbH (n.d.) YALI® - sustainable combination of ecology and economy. https://www.yalibims.com/en/index.htmlLast visited 13/07/2025
[2]Global Volcanism Program (n.d.) Yali Eruptive History. https://volcano.si.edu/volcano.cfm?vn=212051Last visited 13/07/2025
[4]LAVA MINING and QUARRYING S.A. (n.d.) Yali pumice product. https://www.lava.gr/en/products/pumice/Last visited 13/07/2025
