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Paleomagnetisk undersökning av senpaleozoiska gångbergarter i Skåne : kongadiabas, melafyr och kullait

Bengtsson, Fredrik (1996) In Examensarbeten i geologi vid Lunds universitet
Department of Geology
Abstract
This palaeo- and mineralmagnetic study is intended to give paleomagnetic directions for, and
if possible clarify the relations between, the main groups of NW-SE striking scanian mafic
dykes; quartsdolerites (or Kongadolerites), melaphyres and kullaites, and an odd syeniteporphyry dyke.
These dykes have been restricted to late Palaeozoic ages by previous geologic (fieldrelations
and K-Ar radiometric dating) and paleomagnetic investigations.
The ages of the quartsdolerites and most of the melaphyres as well as one kullaite are believed
to be Carboniferous (possibly upper Carboniferous). The majority of the kullaites and the syeniteporphyry
dyke give less stable Characteristic Remanent Magnetisms, suggesting paleomagnetic
poles of... (More)
This palaeo- and mineralmagnetic study is intended to give paleomagnetic directions for, and
if possible clarify the relations between, the main groups of NW-SE striking scanian mafic
dykes; quartsdolerites (or Kongadolerites), melaphyres and kullaites, and an odd syeniteporphyry dyke.
These dykes have been restricted to late Palaeozoic ages by previous geologic (fieldrelations
and K-Ar radiometric dating) and paleomagnetic investigations.
The ages of the quartsdolerites and most of the melaphyres as well as one kullaite are believed
to be Carboniferous (possibly upper Carboniferous). The majority of the kullaites and the syeniteporphyry
dyke give less stable Characteristic Remanent Magnetisms, suggesting paleomagnetic
poles of Jurassic age or possibly Viscous Remanent Magnetisms affected by the
present geomagnetic field.
Mineralmagnetic characteristics confirrns the Kongadolerites as clean and fairly unaffected by
autometamorphic and later changes. Melaphyres and kullaites show similarities, and a few
varieties of melaphyres are difficult to magnetically, and by their fieldappearance, distinguish
from the kullaites.
This investigation cannot deny the possibility that melaphyres, kullaites and the syeniteporphyry
dyke are genetically related, differing only in degree of the original mafic melts assimilation
of country rock, as suggested by Hjelmqvist in 1939. (Less)
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author
Bengtsson, Fredrik
supervisor
organization
year
type
H1 - Master's Degree (One Year)
subject
keywords
palaeomagnetism, dolerite, melaphyre, kullaite, Sweden, Scania, Carboniferous, Permian, Jurassic
publication/series
Examensarbeten i geologi vid Lunds universitet
report number
75
language
Swedish
id
2365885
date added to LUP
2012-10-23 13:43:16
date last changed
2012-10-23 13:43:16
@misc{2365885,
  abstract     = {This palaeo- and mineralmagnetic study is intended to give paleomagnetic directions for, and
if possible clarify the relations between, the main groups of NW-SE striking scanian mafic
dykes; quartsdolerites (or Kongadolerites), melaphyres and kullaites, and an odd syeniteporphyry dyke.
These dykes have been restricted to late Palaeozoic ages by previous geologic (fieldrelations
and K-Ar radiometric dating) and paleomagnetic investigations.
The ages of the quartsdolerites and most of the melaphyres as well as one kullaite are believed
to be Carboniferous (possibly upper Carboniferous). The majority of the kullaites and the syeniteporphyry
dyke give less stable Characteristic Remanent Magnetisms, suggesting paleomagnetic
poles of Jurassic age or possibly Viscous Remanent Magnetisms affected by the
present geomagnetic field.
Mineralmagnetic characteristics confirrns the Kongadolerites as clean and fairly unaffected by
autometamorphic and later changes. Melaphyres and kullaites show similarities, and a few
varieties of melaphyres are difficult to magnetically, and by their fieldappearance, distinguish
from the kullaites.
This investigation cannot deny the possibility that melaphyres, kullaites and the syeniteporphyry
dyke are genetically related, differing only in degree of the original mafic melts assimilation
of country rock, as suggested by Hjelmqvist in 1939.},
  author       = {Bengtsson, Fredrik},
  keyword      = {palaeomagnetism,dolerite,melaphyre,kullaite,Sweden,Scania,Carboniferous,Permian,Jurassic},
  language     = {swe},
  note         = {Student Paper},
  series       = {Examensarbeten i geologi vid Lunds universitet},
  title        = {Paleomagnetisk undersökning av senpaleozoiska gångbergarter i Skåne : kongadiabas, melafyr och kullait},
  year         = {1996},
}