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Inventering av sprickmineraliseringar i en del av Sorgenfrei-Tornquistzonen, Dalby stenbrott, Skåne

Halling, Jenny LU (2015) In Examensarbeten i geologi vid Lunds universitet GEOL01 20151
Department of Geology
Abstract (Swedish)
Sorgenfrei-Tornquistzonen har sedan slutet av Paleozoikum undergått upprepade deformationsfaser, både extensiva och kompressiva som resulterat i omfattande blockförkastningar och bassänginversion. Detta har skapat en mycket uppsprucken berggrund som med tiden läkts av olika mineral. Denna studie presenterar en inventering av sprickmineralen i Dalby stenbrott i Skåne, var bergartsprover har samlats in för analys med svepelektronmikroskop (SEM) och EDS-teknik. Totalt identifierades 15 olika mineral och mineralgrupper där de vanligast förekommande visade sig vara epidot, karbonat, fluorit och kvarts. Av de mindre frekventa sprick-fyllnaderna kunde några av de vanligaste malmbildande sulfiderna dentifieras såsom pyrit, zinkblände och blyglans.... (More)
Sorgenfrei-Tornquistzonen har sedan slutet av Paleozoikum undergått upprepade deformationsfaser, både extensiva och kompressiva som resulterat i omfattande blockförkastningar och bassänginversion. Detta har skapat en mycket uppsprucken berggrund som med tiden läkts av olika mineral. Denna studie presenterar en inventering av sprickmineralen i Dalby stenbrott i Skåne, var bergartsprover har samlats in för analys med svepelektronmikroskop (SEM) och EDS-teknik. Totalt identifierades 15 olika mineral och mineralgrupper där de vanligast förekommande visade sig vara epidot, karbonat, fluorit och kvarts. Av de mindre frekventa sprick-fyllnaderna kunde några av de vanligaste malmbildande sulfiderna dentifieras såsom pyrit, zinkblände och blyglans. Mineralen i proverna har kunnat delas in i fyra sprickgenerationer, troligen kopplade till olika skeden i berggrundens utveckling. En viktig händelse kan anses vara den Permiska extensionen och intrusionen av diabasgångar som mobiliserade många grundämnen. (Less)
Abstract
The Sorgenfrei-Tornquist zone has, since the late Paleozoic, undergone repeted periods of deformation, both extensive and compressive which have resulted in comprehensive block faulting and basin inversion. These factors have created a highly fractured bedrock that has healed of various minerals along the tectonic evolution. This study presents an inventory of fracture minerals in Dalby quarry in southern Sweden, where rock samples have been collected for analysis by Scanning Electron Microscope (SEM) and EDS technology. In total, 15 different minerals and mineral groups were identified and here the most abundant attested to be epidote, carbonate, fluorite and quartz. Of the less frequent fractual mineralizations some of the most common... (More)
The Sorgenfrei-Tornquist zone has, since the late Paleozoic, undergone repeted periods of deformation, both extensive and compressive which have resulted in comprehensive block faulting and basin inversion. These factors have created a highly fractured bedrock that has healed of various minerals along the tectonic evolution. This study presents an inventory of fracture minerals in Dalby quarry in southern Sweden, where rock samples have been collected for analysis by Scanning Electron Microscope (SEM) and EDS technology. In total, 15 different minerals and mineral groups were identified and here the most abundant attested to be epidote, carbonate, fluorite and quartz. Of the less frequent fractual mineralizations some of the most common ore-forming sulfides were identified, namely Pyrite, Sphalerite and Galena. The minerals found has been divided into four generations of fractures, which can be linked to different stages of the bedrock’s evolution. The Permian extension and the intrusion of dolerite dykes has been considered as an important event that mobilized many elements in the bedrock, to form these mineralizations. (Less)
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author
Halling, Jenny LU
supervisor
organization
course
GEOL01 20151
year
type
M2 - Bachelor Degree
subject
keywords
Sorgenfrei-Tornquistzonen, sprickmineral, sprickgenerationer, SEM, Dalby stenbrott
publication/series
Examensarbeten i geologi vid Lunds universitet
report number
488
language
Swedish
id
5469171
date added to LUP
2015-06-09 11:17:33
date last changed
2015-06-09 11:17:33
@misc{5469171,
  abstract     = {The Sorgenfrei-Tornquist zone has, since the late Paleozoic, undergone repeted periods of deformation, both extensive and compressive which have resulted in comprehensive block faulting and basin inversion. These factors have created a highly fractured bedrock that has healed of various minerals along the tectonic evolution. This study presents an inventory of fracture minerals in Dalby quarry in southern Sweden, where rock samples have been collected for analysis by Scanning Electron Microscope (SEM) and EDS technology. In total, 15 different minerals and mineral groups were identified and here the most abundant attested to be epidote, carbonate, fluorite and quartz. Of the less frequent fractual mineralizations some of the most common ore-forming sulfides were identified, namely Pyrite, Sphalerite and Galena. The minerals found has been divided into four generations of fractures, which can be linked to different stages of the bedrock’s evolution. The Permian extension and the intrusion of dolerite dykes has been considered as an important event that mobilized many elements in the bedrock, to form these mineralizations.},
  author       = {Halling, Jenny},
  keyword      = {Sorgenfrei-Tornquistzonen,sprickmineral,sprickgenerationer,SEM,Dalby stenbrott},
  language     = {swe},
  note         = {Student Paper},
  series       = {Examensarbeten i geologi vid Lunds universitet},
  title        = {Inventering av sprickmineraliseringar i en del av Sorgenfrei-Tornquistzonen, Dalby stenbrott, Skåne},
  year         = {2015},
}