Tephrabase has found the Hoy Tephra at 4 sites.
More information about the sites (including tephra layers and geochemistry) displayed on the map above can be obtained by clicking on the symbols and then the site name which appears in the bubble. Use the zoom and drag controls to change your view. Use Ctr/Cmd and scroll real to zoom using a mouse or two finger scroll on a touch screen device. Alternative basemaps are available by clicking on the right-hand + symbol. You can also click on any site names in the list below for more information.
| Site Name | Profile | Area/Country | Latitude | Longitude | Grid Ref | Alt (m) | Geochemistry |
|---|---|---|---|---|---|---|---|
| Ballynahone | Core 1 | County Londonderry, Northern Ireland | 54.8000°N | 6.6300°W | H875955 | 40 | View data |
| Garvaghullion | Core 1 | County Tyrone, Northern Ireland | 54.6330°N | 7.4330°W | H365768 | 80 | View data |
| Keiths Peat Bank | Profile 1 | Hoy, Orkney Islands, Scotland | 58.8120°N | 3.2670°W | ND272922 | 65 | View data |
| Loch Farlary | Y25 | Sutherland, Scotland | 58.0162°N | 4.0763°W | NC774048 | 205 | View data |
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This Tephrabase search was made on 5/7/2025 at 09:10:48 local time, Edinburgh, Scotland, UK.