Fróðskaparrit - 01.01.1968, Qupperneq 76

84
A Note on some Geo-Electrical Measurements
The figures in the column indicate the real specific resis-
tivities of the layers in ohm-rn. Layers situated in depths from
0-1 m have mainly been omitted.
The electrical sounding curves indicate a very uniform
stratigraphy within the examined area. Thus the sequence con-
sists primarily of four layers as stated in the generalized pro-
file Fig. 5 A.
A
B
30-170
240-510

36-75
ca.3000- ca6500 < < < < * < < < < <
Argitlaceous sand and sand
Sand
Argitlaceous sand
Basalt
Fig. 5: A. Generalized resistivity profile. Numbers indicate the
maximum and minimum resistivity values (ohm-m).
B. Generalized geological profile.
5. The geological interpretation of the geophysical data
is to some extent hindered by the fact 'that only little infor-
mation exists about the sedimentary layers. There is, however,
a 'description of an archaeological excavation situated immidia-
tely to the south of the road to Haldarsvík and east of the
stone fence marking the eastern limit of the cultivated area
around Tjørnuvík (Dahl and Rasmussen, 1956). Beneath a
cover of talus the excavation revealed: 1) about 0.5 m thick
layer of fairly clean sand overlying 2) clayey sand which is
not cut through, but is supposed to be more than 0.5 m thick.
The interface between the two layers is sharp but somewhat
irregular. Towards the west the layers are cut off by a wedge
consisting of talus material (Figs. 2 and 3 in Dahl and Ras-
mussen, 1956).