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A geophysical study of a drumlin in the Åsnen area, Småland, south Sweden

Asani, Besnik LU (2015) In Dissertations in Geology at Lund University GEOL01 20151
Department of Geology
Abstract
The sediment composition of drumlins in the Åsnen area in Småland, south Sweden is poorly studied.
Excavations are being planned with intention to study the internal architecture and composition of these drumlins.
As a preliminary investigation this thesis was done to determine the sediment depths in the tail of a drumlin at
Rörvik gård, situated on Vemboö in Lake Åsnen. To determine the sediment depths three geophysical methods
were carried out on the drumlin: (i) resistivity (cves), (ii) electromagnetic slingram and (iii) induced polarization
effect measurements. Using the data acquired from these measurements, models presenting maximum and minimum
potential depths to the bedrock were interpreted. The results indicate that the... (More)
The sediment composition of drumlins in the Åsnen area in Småland, south Sweden is poorly studied.
Excavations are being planned with intention to study the internal architecture and composition of these drumlins.
As a preliminary investigation this thesis was done to determine the sediment depths in the tail of a drumlin at
Rörvik gård, situated on Vemboö in Lake Åsnen. To determine the sediment depths three geophysical methods
were carried out on the drumlin: (i) resistivity (cves), (ii) electromagnetic slingram and (iii) induced polarization
effect measurements. Using the data acquired from these measurements, models presenting maximum and minimum
potential depths to the bedrock were interpreted. The results indicate that the drumlin has varying sediment
depths and undulating bedrock with the sediment on top being independent from the form of the bedrock. Sediment
depths of 2m to 8m were found in the drumlin according to the minimum interpretation, and depths of 2-15+ m
according to the maximum interpretation. Due to equivalence problems that come with the three selected geophysical
methods, it is suggested that drilling samples are suited to solve the problem, providing much more accurate
interpretations. It is also suggested that the geophysical method seismic refraction studies could potentially be another
choice of method to be used in similar studies. (Less)
Please use this url to cite or link to this publication:
author
Asani, Besnik LU
supervisor
organization
course
GEOL01 20151
year
type
M2 - Bachelor Degree
subject
keywords
Geophysics, drumlin, resistivity, induced-Polarization, electromagnetic slingram
publication/series
Dissertations in Geology at Lund University
report number
444
language
English
id
5468980
date added to LUP
2015-06-08 14:12:15
date last changed
2015-06-08 14:12:15
@misc{5468980,
  abstract     = {The sediment composition of drumlins in the Åsnen area in Småland, south Sweden is poorly studied.
Excavations are being planned with intention to study the internal architecture and composition of these drumlins.
As a preliminary investigation this thesis was done to determine the sediment depths in the tail of a drumlin at
Rörvik gård, situated on Vemboö in Lake Åsnen. To determine the sediment depths three geophysical methods
were carried out on the drumlin: (i) resistivity (cves), (ii) electromagnetic slingram and (iii) induced polarization
effect measurements. Using the data acquired from these measurements, models presenting maximum and minimum
potential depths to the bedrock were interpreted. The results indicate that the drumlin has varying sediment
depths and undulating bedrock with the sediment on top being independent from the form of the bedrock. Sediment
depths of 2m to 8m were found in the drumlin according to the minimum interpretation, and depths of 2-15+ m
according to the maximum interpretation. Due to equivalence problems that come with the three selected geophysical
methods, it is suggested that drilling samples are suited to solve the problem, providing much more accurate
interpretations. It is also suggested that the geophysical method seismic refraction studies could potentially be another
choice of method to be used in similar studies.},
  author       = {Asani, Besnik},
  keyword      = {Geophysics,drumlin,resistivity,induced-Polarization,electromagnetic slingram},
  language     = {eng},
  note         = {Student Paper},
  series       = {Dissertations in Geology at Lund University},
  title        = {A geophysical study of a drumlin in the Åsnen area, Småland, south Sweden},
  year         = {2015},
}