| PMG-5 | Plinian | 1600.5 | 100 | | doi:10.1191/0959683602hl538rr | possibly c. AD 1600 interpolated (Hall & Pilcher 2002). | |
| BIP-24 | Plinian | 900.5 | 100 | | doi:10.1111/j.1502-3885.2005.tb01011.x | c. AD 900 interpolated | |
| AD860 Layer part B | Plinian | 860.5 | 20 | | doi:10.1177/095968369500500111 | c. AD 860 ± 20 radiocarbon wiggle-match at Sluggan (AD lower layer, colourless tephra shards, two populations) | |
| OMH-185 (Barnsmore) | Plinian | -716.5 | 38 | IntCal04 | doi:10.1191/0959683604hl757rr | c. 755-680 cal BC (Plunkett et al. 2004). According to Hall and Pilcher (2002) this is probably equivalent to the DOM-6 'microlite' tephra in Germany. | |
| Derrycunihy Wood SH-1 | Plinian | | | | | | |
| FMAZ II (Fugloyarbanki) | Plinian | -24739.5 | 1 | GICC05 | doi:10.1002/jqs.1182 | 26740 ± 390 yr b2k in NGRIP 1848.05 | |
| Borrobol | Plinian | -12094.5 | 95 | IntCal09 | doi:10.1002/jqs.1498 | Best current estimate is 14.14-13.95 cal ka BP (Bayesian age model). Replaces Turney et al. (1997) date of c.14.4 cal ka BP. Davies et al. (2004) suggestion of 2 eruptions has been revised by Matthews et al. (2011). | |
| L3574 | Plinian | | | | | No age given, reported as 'older than Saksunarvatn tephra' by Dugmore and Newton (1997). Turney et al. (2006) suggests an age of c. 10.8 ka cal. BP. | |
| OWB-105 AD700 | Plinian | 700.5 | 100 | | doi:10.1191/0959683602hl538rr | c. AD 700 interpolated (Hall & Pilcher 2002). | |
| Penifiler Tephra | Plinian | -11929.5 | 200 | IntCal09 | doi:10.1002/jqs.1498 | 14.08-13.68 cal ka BP (Bayesian age model) | |
| Sluggan A | Plinian | -12549.5 | 500 | | doi:10.1002/jqs.990 | c. 14500 cal BP suggested by Turney et al. (2006) | |
| Sluggan B | Plinian | -10849.5 | 500 | | doi:10.1002/jqs.990 | c. 12800 cal BP suggested by Turney et al. (2006) | |
| AD860 Layer part A | Plinian | 860.5 | 20 | | doi:10.1177/095968369500500111 | c. AD 860 ± 20 radiocarbon wiggle-match at Sluggan (AD lower layer, colourless tephra shards, two populations) | |
| BMR-90 AD920 | Plinian | 920.5 | 100 | | doi:10.1191/0959683602hl538rr | c. AD 920 interpolated (Hall & Pilcher 2002) | |
| Breakish Tephra | Plinian | | | | doi:10.1002/jqs.1066 | no date suggested although position above the Ashik tephra and Saksunarvatn indicates an age in the early-mid Holocene. | |
| DOM-6 'microlite' tephra | Plinian | -696.5 | 35 | | doi:10.1006/qres.2002.2325 | c. 730-664 cal BC radiocarbon (van den Bogaard et al. 2002). According to Hall & Pilcher (2002) this is probably equivalent to the OMH-185 (Barnsmore) tephra. | |
| GB4-182 | Plinian | -1349.5 | 200 | | doi:10.1191/0959683602hl538rr | c. 1350 cal BC interpolated (Hall & Pilcher 2002) | |
| GB4-50 AD1250 | Plinian | 1250.5 | 100 | | doi:10.1191/0959683602hl538rr | c. AD 1250 interpolated (Hall & Pilcher 2002) | |
| Harthorpe Moss tephra | Plinian | | | | doi:10.1177/095968369600600112 | | |
| Lough Portain B | Plinian | | 0 | | doi:10.1177/095968369500500301 | sub-population of Hekla AD 1510 eruption (Lough Portain A). Status is unclear, not a distinct isochrone | |
| MOR-T4 | Plinian | 1000.5 | 100 | | doi:10.1191/0959683604hl749rp | c. cal AD 1000 interpolated (Chambers et al. 2004) | |
| Roddans Port A | Plinian | | | | doi:10.1002/jqs.990 | two sub-populations (A & B) at 63-64 cm depth, dating unclear, pre-Vedde Ash. | |
| Roddans Port B | Plinian | | | | doi:10.1002/jqs.990 | two sub-populations (A & B) at 63-64 cm depth, dating unclear, pre-Vedde Ash. | |
| SLU-5 | Plinian | 1650.5 | 50 | | doi:10.1191/0959683602hl538rr | c. AD 1600-1700 interpolated (Hall & Pilcher 2002) | |
| Stomyren tephra | Plinian | -149.5 | 100 | | doi:10.1016/j.quaint.2004.04.030 | c. 2100 cal yr BP interpolated (Wastegard 2005) | |
| Vallensgard Mose tephra | Plinian | | | | doi:10.1002/jqs.990 | Stratigraphic position is similar to Vedde Ash, in the middle of the Younger Dryas, but geochemistry is different. Unclear if this is a significant tephra horizon. | |
| NAAZ I | Plinian | -10449.5 | 500 | Marine04 | doi:10.1016/j.quascirev.2006.03.001 | Diffuse layer representing c. 11 ka 14C yr GS-1 ash zone containing components from I-Thol-2 (Grímsvötn), I-Rhy.1 (Katla) and I-Thol-1 (Veidivötn). It is commonly believed that the biggest contributor is the rhyolitic component of the Vedde Ash. | |
| L-274 | Plinian | -8274.5 | 100 | IntCal09 | doi:10.1016/j.quaint.2011.05.014 | 14C modeled age of 10,325-10,125 yr cal BP (Lind & Wastegard 2011). | |
| 5d-BAS | Plinian | -109549.5 | 5000 | Orbital | doi:10.1016/s0277-3791(98)00038-9 | Probably represents an eruption complex. Several geochemical populations: BAS-I, BAS-II, BAS-III. | |
| 5e-Midt | Plinian | -123049.5 | 5000 | Orbital | doi:10.1016/s0277-3791(98)00038-9 | Probably represents an eruption complex. Several geochemical populations: RHY, INT, BAS & TAB (the 5e-Midt/TRACHY is believed to be from Jan Mayen). Wallrabe-Adams & Lackschewitz (2002) suggest either Vatnafjoll or Vestmannaeyjar may be the source. | |
| 5e-Low | Plinian | -127549.5 | 5000 | Orbital | doi:10.1016/s0277-3791(98)00038-9 | Probably represents an eruption complex. Several geochemical populations. Wallrabe-Adams & Lackschewitz (2002) suggest either Vatnafjoll or Vestmannaeyjar may be the source. | |
| St. 5a-THOL-1 | Plinian | -74549.5 | 5000 | Orbital | doi:10.1016/0012-821x(95)00145-3 | THOL geochemical composition | |
| St. 7-RHY-I & II | Plinian | -208049.5 | 20000 | Orbital | doi:10.1002/jqs.3390060205 | RHY-I & RHY-II geochemical compositions | |
| St. 7-BAS/INT-I | Plinian | -208549.5 | 20000 | Orbital | doi:10.1002/jqs.3390060205 | INT-I & INT/BAS-I geochemical compositions | |
| St. 9-RHY-I | Plinian | -328049.5 | 30000 | Orbital | doi:10.1002/jqs.3390060205 | RHY geochemical composition; possible equivalent to NAAZ III (III-RHY-I, c.320 ka) | |
| St. 9-BAS-I | Plinian | -328049.5 | 30000 | Orbital | doi:10.1002/jqs.3390060205 | BAS geochemcial composition | |