Data Publication

Analysis of element behavior in mylonites of the Seve Nappe of the Scandinavian Caledonides using different core scanning methods (Datasets)

Hierold, Johannes | Körting, Friederike | Kollaske, Tina | Rogass, Christian | Harms, Ulrich

GFZ Data Services

(2016)

Descriptions

The International Continental Scientific Drilling Program (ICDP) performed a dual-phase scientific drilling project to investigate mountain-building processes called Collisional Orogeny in the Scandinavian Caledonides (COSC). The borehole COSC-1 was drilled through the Lower Seve Nappe, as the first of two 2.5 km deep drill holes close to Åre, central Sweden. The recovered rocks comprise a 1650 m thick suite of high grade gneisses and amphibolites with clear Seve Nappe affinities, while the lower 850 m comprise rather homogenous mylonitic gneisses with interfingered K-rich phyllonite bands of cm to several m size and some intercalated amphibolites. The different lithologies all crosscut the core in a subhorizontal direction with foliation of gneisses and phyllonites in the same direction. Albite and garnet porphyroblasts with pressure shadows show syn-deformational growth and the same sub-horizontal alignment. The focus of this study was to detect chemical and mineralogical differences in mylonitic and host rocks and to relate these differences to either metasomatism and deformation or inherited source rock variance. Another goal of this work is to compare chemical core scanning instruments. For this purpose two different X-Ray Fluorescence (XRF) techniques, Laser Induced Breakdown Spectroscopy (LIBS) and hyperspectral imaging served to measure seven samples from the lower 850 m of the COSC-1 core. This data publication comprises the datasets gained in the course of this study. The metadata (OF WHAT?) will be presented in an additional file including XRF data from the Avaatech XRF core scanner in a txt.file as well as datasets of the other used devices in original file formats.

Keywords

Originally assigned keywords

caledonides

COSC

deep hydrosphere

dynamics

europe

heat flow

himalaya

ICDP-2011/03

microbiology

norway

orogen

scandes

scandinavia

seismic

sweden

XRF

LIBS

Hyperspectral Analysis

Corresponding MSL vocabulary keywords

orogen

x-ray fluorescence spectrometer

MSL enriched keywords

tectonic plate boundary

convergent tectonic plate boundary

continental collision

orogen

equipment

x-ray spectrometer

x-ray fluorescence spectrometer

metamorphic rock

mylonite

fault rock

mylonite

Equipment

borehole drilling

drill core

amphibolite

minerals

silicate minerals

nesosilicates

garnet

tectosilicates

feldspar - plagioclase

albite

measured property

rhenium

Analyzed feature

deformation microstructure

generic deformation microstructure

foliation

metamorphic microstructure

porphyroblast

MSL enriched sub domains i

geochemistry

geo-energy test beds

microscopy and tomography

Source

http://dataservices.gfz-potsdam.de/icdp/showshort.php?id=escidoc:1640896

Source publisher

GFZ Data Services