Journal of Geophysical Research Earth Surface
Supporting Information for
Architecture and structural evolution of an early Little Ice Age terminal moraine at
the surge-type glacier Múlajökull, Iceland
Ívar Örn Benediktsson1, Anders Schomacker2,3, Mark D. Johnson4, Alessa J. Geiger5,
Ólafur Ingólfsson6,7, Esther Ruth Guðmundsdóttir7
1Department
2Department
3Centre
of Geology, Lund University, Sölvegatan 12, S-223 62 Lund, Sweden
of Geology, Norwegian University of Science and Technology, Sem Sælands Veg 1, N-7491
Trondheim, Norway
for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade
5-7, DK-1350 Copenhagen K., Denmark
4Department
5School
6 The
7Institute
of Earth Sciences, University of Gothenburg, Box 460, S-405 30 Göteborg, Sweden
of Geographical & Earth Sciences, University of Glasgow, G12 8QQ Glasgow, UK
University Centre in Svalbard (UNIS), P.O. Box 156, N-9171 Longyearbyen, Norway
of Earth Sciences, University of Iceland, Askja, Sturlugata 7, IS-101 Reykjavík, Iceland
Contents of this file
Table S1
Caption for Table S1
Caption for Table S2
Additional Supporting Information (Files uploaded separately)
Table S2
Introduction
The supporting information includes two tables; Table S1 contains the details of
radiocarbon dating of five different samples from the end moraine, and Table S1
contains major element analysis of tephra layers identified in the moraine. Samples for
radiocarbon dating were collected in 2009 and 2010 and processed at the Radiocarbon
Dating Laboratory at the Norwegian University of Science and Technology (Lab no. Tra2833 and 2834) and the Ångström Laboratory at Uppsala University, Sweden (Lab no.
Ua-39081, 42013, and 42014). Major element geochemistry of the tephra layers was
1
analyzed on a JEOL Super probe JSL 8200 at the University of Copenhagen, Denmark
in November 2014 and January 2015.
Sample/locality
number (Fig. 2)
0901
1010
1013
1014
1023
Lab number
Material dated
14
Ua-39081
TRa-2833
TRa-2834
Ua-42013
Ua-42014
Twig in peat
Peat (LPT)
Peat (LPT)
Peat (LPT)
Bulk organic soil
86±30
1045±40
3440±45
3666±40
1263±30
C age (yr BP)
Calibrated age range
95.4%±2σ (cal. yr BP)
263-23
1059-835
3831-3592
4143-3886
1284-1087
Table S1. Radiocarbon results from organic material sampled in the sedimentary
sections in Arnarfellsmúlar (Figure 2). The 14C ages are calibrated with OxCal 4.2 using
the IntCal13 calibration curves (Reimer et al., 2013). LPT indicates that the sample is
from a Loess-Peat-Tephra sequence.
Table S2. Results from major element analyses of identified tephra layers. The
analyses have been examined for outliers, i.e. grains with a geochemical composition
with abnormal levels of Al, Fe, Ti, Ca, Na or K reflection contamination by microlites or
impurities in the glass and exulted from further investigation, as well as those where the
percentages of the oxides did not sum to at least 95%. Italic analyses in samples
MUP1019 and MUP1022 are interpreted not to belong to the Hekla 1980 tephra and are
most likely present do to sampling contamination.
2