Jökull - 01.01.2015, Side 48

Þorsteinsdóttir et al.
Jakobsson, S. P. 1979. Petrology of Recent basalts of the
Eastern Volcanic Zone, Iceland. Acta Naturalia Isl. 26,
1–103.
Jóhannesson, H., S. P. Jakobsson, and K. Sæmundsson
1990. Geological map of Iceland, sheet 6, South-
Iceland, third edition. Icelandic Museum of Natural
History and Icelandic Geodetic Survey, Reykjavík.
Jóhannesson, H. and S. Einarsson 1992. Hekla fjall með
fortíð. Náttúrufræðingurinn 61, 177–191.
Jóhannesson, H. and K. Sæmundsson 1998. Geological
map of Iceland. 1:500.000. Tectonics. Icelandic Insti-
tute of Natural History, Reykjavík.
Kjartansson, G. 1945. Hekla. Árbók Ferðafélags Íslands
1945. Ferðafélag Íslands, Reykjavík.
Larsen, G. and S. Thorarinsson 1977. Hekla 4 and other
acid Hekla tephra layers. Jökull 27, 28–46.
Larsen, G., E. G. Vilmundardóttir and B. Thorkelsson
1992. Heklugosið 1991: Gjóskufallið og gjóskulagið
frá fyrsta degi gossins. Náttúrufræðingurinn 61, 159–
176.
Larsen, G., A. Dugmore and A. Newton 1999. Geochem-
istry of historical-age silicic tephras in Iceland. The
Holocene 9, 463–471.
Larsen, G. 2000. Holocene eruptions within the Katla vol-
canic system, south Iceland: Characteristics and envi-
ronmental impact. Jökull 49, 1–28.
Larsen, G., Newton, A.J., A. J. Dugmore, and E. G. Vil-
mundardóttir 2001. Geochemistry, dispersal, volumes
and chronology of Holocene silicic tephra layers from
the Katla volcanic system, Iceland. J. Quat. Sci. 16,
119–132.
Larsen, G. 2010. Katla: Tephrochronology and eruption
history. Developm. Quat. Sci. 13, 23–49.
Larsen, G., G. Sverrisdóttir, H. Jóhannesson, Á. Hjartar-
son and P. Einarsson 2013. Hekla. In: Sigmundsson,
F. (ed.), Náttúruvá á Íslandi–Eldgos og Jarðskjálftar.
Reykjavík: Viðlagatrygging Íslands and Háskólaútgáf-
an, 189–209.
Mele, D., P. Dellino, R. Sulpizio and G. Braia 2011. A
systematic investigation on the aerodynamics of ash
particles. J. Volc. Geotherm. Res. 203, 1–11.
Micromeritics 2010. SediGraph III 5120 Operator’s Man-
ual (V1.04). Norcross, GA.
Morrisey, M., B. Zimanowski, K. Wohletz. and R. Buet-
ner 2000. Phreatomagmatic fragmentation. In: Sig-
urðsson, H., B. Houghton, S. R. Mcnutt, H. Rymer and
J. Stix (eds.), Encyclopedia of Volcanoes. San Diego:
Academic press. 431-445.
Nicholson, E., K. Cashman, F. Beckett, C. Witham, S.
Leadbetter and M. Hjort 2014. Brown snow: Remobil-
isation of volcanic ash from recent Icelandic eruptions.
31st Nordic Geol. Winter Meeting, Abstracts, 163.
Óladóttir, B. A. 2003. Gjóskulagið E2 úr Kötlu kornalög-
un og kornastærð. B.Sc. Thesis, University of Iceland,
Reykjavík, 90 pp.
Óladóttir, B. A., Larsen, G., Þórðarson, Þ. and Sigmars-
son, O. 2005. The Katla volcano S-Iceland: Holocene
tephra stratigraphy and eruption frequency. Jökull 55,
53–74.
Óladóttir, B. A., Th. Thordarson, G. Larsen and O. Sig-
marsson 2007. Survival of the Mýrdalsjökull ice cap
through the Holocene thermal maximum: evidence
from sulphur contents in Katla tephra layers (Iceland)
from the last ∼8400 years. Ann. Glaciol. 45, 183–188.
Óladóttir, B. A., O. Sigmarsson, G. Larsen and Th. Thord-
arson 2008. Katla volcano, Iceland: magma composi-
tion, dynamics and eruption frequency as recorded by
Holocene tephra layers. Bull. Volcanol. 70, 475–493.
Ólafsson, M., P. Imsland and G. Larsen 1984. Nornahár II
(Pelé’s hair II). Náttúrufræðingurinn 53, 135–144.
Rose, W. I. and A. J. Durant 2009. Fine ash content of
explosive eruptions. J. Volcanol. Geotherm. Res. 186,
32–39.
Salmi, M. 1948. The Hekla ashfalls in Finland. Suomen
Geologinen Seura 21, 87–96.
Self, S. and R. S. J. Sparks 1978. Characteristics of
widespread pyroclastic deposits formed by the inter-
action of silicic magma and water. Bull. Volcanol. 41,
196–212.
Sigmarsson, O., M. Condomines and S. A. Fourcade 1992.
Detailed Th, Sr and O isotope study af Hekla: differen-
tiation processes in an Icelandic volcano. Contr. Min-
eral. Petrol. 112, 20–34.
Soosalu, H. and P. Einarsson 2004. Seismic constraints on
magma chambers at Hekla and Torfajökull volcanoes,
Iceland. Bull. Volcanol. 66, 276–286.
Sparks, R. S. J., L. Wilson and H. Sigurdsson 1981. The
pyroclastic deposits of the 1875 eruption of Askja, Ice-
land. Phil. Trans. Royal Soc. London, Series A 299,
241–273.
Sverrisdóttir, G. 2007. Hybrid magma generation preced-
ing Plinian silicic eruptions at Hekla, Iceland; Evi-
dence from mineralogy and chemistry of two zoned
deposits. Geol. Mag. 144, 643–659.
Thorarinsson S. 1954. The tephra-fall from Hekla on
March 29th 1947. In: Einarsson T., G. Kjartansson and
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