| 60532 |
Creator |
16f242b5a898b60dd572da2dbdcc6f62 |
| 60532 |
Creator |
1b8a71ef5b52b9dd4b573c12680d2e74 |
| 60532 |
Creator |
3a546c110042cbda717a645dd2469101 |
| 60532 |
Creator |
7c5825e7c2825b78a93259a59bc3de0a |
| 60532 |
Creator |
d040c0af01390d69bbf114bd8a065c97 |
| 60532 |
Creator |
ext-28a4252486ea9bda5728dab31810c314 |
| 60532 |
Creator |
ext-6114cafc0262f4e8423272544acff0a7 |
| 60532 |
Date |
2019 |
| 60532 |
Date |
2019-06-01 |
| 60532 |
Is Part Of |
p00917613 |
| 60532 |
Is Part Of |
repository |
| 60532 |
abstract |
The tephra dispersal mechanisms of rhyolitic glaciovolcanic eruptions are little known,
but can be investigated through the correlation of eruptive products across multiple
depositional settings. Using geochemistry and geochronology, we correlate a regionally
important Pleistocene tephra horizon—the rhyolitic component of North Atlantic Ash
Zone II (II-RHY-1)—and the Thórsmörk Ignimbrite with rhyolitic tuyas at Torfajökull
volcano, Iceland. The eruption breached an ice mass >400 m thick, leading to the widespread
dispersal of II-RHY-1 across the North Atlantic and the Greenland ice sheet. Locally,
pyroclastic density currents traveled across the ice surface, depositing the variably
welded Thórsmörk Ignimbrite beyond the ice margin and ~30 km from source. The widely
dispersed products of this eruption represent a valuable isochronous tie line between
terrestrial, marine, and ice-core paleoenvironmental records. Using the tephra horizon,
estimates of ice thickness and extent derived from the eruption deposits can be directly
linked to the regional climate archive, which records the eruption at the onset of
Greenland Stadial 15.2. |
| 60532 |
authorList |
authors |
| 60532 |
issue |
6 |
| 60532 |
status |
peerReviewed |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/840396 |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/840401 |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/840402 |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/840403 |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/840404 |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/840405 |
| 60532 |
uri |
http://data.open.ac.uk/oro/document/841242 |
| 60532 |
volume |
47 |
| 60532 |
type |
AcademicArticle |
| 60532 |
type |
Article |
| 60532 |
label |
Moles, Jonathan D. ; McGarvie, Dave ; Stevenson, John A.; Sherlock, Sarah C. ;
Abbott, Peter M.; Jenner, Frances E. and Halton, Alison M. (2019). Widespread tephra
dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland).
Geology (Early Access). |
| 60532 |
label |
Moles, Jonathan D. ; McGarvie, Dave ; Stevenson, John A.; Sherlock, Sarah C. ; Abbott,
Peter M.; Jenner, Frances E. and Halton, Alison M. (2019). Widespread tephra dispersal
and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland). Geology,
47(6) pp. 577–580. |
| 60532 |
label |
Moles, Jonathan D. ; McGarvie, Dave ; Stevenson, John A.; Sherlock, Sarah C. ;
Abbott, Peter M.; Jenner, Frances E. and Halton, Alison M. (2019). Widespread tephra
dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland).
Geology, 47(6) pp. 577–580. |
| 60532 |
Title |
Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull,
Iceland) |
| 60532 |
in dataset |
oro |