Blar i NTNU Open på forfatter "McEnroe, Suzanne"
-
3D Joint Inversion of Scanning Magnetic Microscopy Data
Pastore, Zeudia; Lelievre, P; McEnroe, Suzanne; Church, Nathan Stewart (Journal article; Peer reviewed, 2021)Scanning magnetic microscopy (SMM) is a modern magnetometry technique that maps the magnetic anomalies resulting from small-scale variations of remanent magnetization within a sample. This information is vital to understand ... -
A study of highly oxidized, high-grade metamorphic sedimentary rocks - A geochemical and petrophysical study of rocks from the Modum Complex, South Norway
Jensen, Hedda Garshol (Master thesis, 2017)The Modum Complex is a part of the Kongsberg Sector, located west of the Oslo Graben in southern Norway. It is made up of arenaceous, argillaceous and calcareous rocks, in addition to volcanites and intrusives. Regionally, ... -
Anatomy of a deep crustal volcanic conduit system; The Reinfjord Ultramafic Complex, Seiland Igneous Province, Northern Norway
Grant, Thomas; B. Larsen, Rune; Anker-Rasch, Lars; Grannes, Kim Rune Bragstad; Iljina, Markku; McEnroe, Suzanne; Nikolaisen, Even; Schanche, Mona; Øen, Endre (Peer reviewed; Journal article, 2016)The Reinfjord Ultramafic Complex, Seiland Igneous Province represents a lower crustal magma chamber (25–30 km depth) that likely records a deep conduit system for mantle derived melts ascending through the continental ... -
Characterisation of the Magnetic Mineralogy, Properties and Magnetic Anomaly Responses of two Garnetiferous Peridotite Bodies in the WGR, Otrøya: Ground Magnetic Surveying, Sampling, Magnetic Characterisation and 2D Modelling
Strømøy, Emilie Kolstø (Master thesis, 2014)Information on magnetisation of earth s crust comes from the study of magnetic anomalies measured at various elevations using ground, airborne and satellite data, as well as studies of deep-seated rocks exposed at the ... -
Chemical and magnetic properties of rapidly cooled metastable ferri-ilmenite solid solutions - IV: The fine structure of self-reversed thermoremanent magnetization
Robinson, Peter; McEnroe, Suzanne; Fabian, Karl; Harrison, Richard J.; Thomas, Christopher Ian; Mukai, Hiroshi (Journal article; Peer reviewed, 2014)Magnetic experiments, a Monte Carlo simulation and transmission electron microscopy observations combine to confirm variable chemical phase separation during quench and annealing of metastable ferri-ilmenite compositions, ... -
Chemical and magnetic properties of rapidly cooled metastable ferri-ilmenite solid solutions: II. Chemical changes during quenching and annealing
Robinson, Peter; Harrison, Richard J.; Miyajima, Nobuyoshi; McEnroe, Suzanne; Fabian, Karl (Journal article; Peer reviewed, 2012)Chemical and microstructural evolution during quench and short-term annealing of a sample XFeTiO3= 0.61 is explored in the light of observations in Paper I. Ordering proceeds by (1) random appearance of ordered and ... -
Chemical and magnetic properties of rapidly cooled metastable ferri-ilmenite solid solutions: implications for magnetic self-reversal and exchange bias - III. Magnetic interactions in samples produced by Fe-Ti ordering
Robinson, Peter; Harrison, Richard J.; Fabian, Karl; McEnroe, Suzanne (Journal article; Peer reviewed, 2012)Paper II of this series described the chemical and microstructural evolution of ferri-ilmenite solid solutions during high-T quench and short-term annealing. Here we explore consequences of these Fe–Ti ordering-induced ... -
Geophysical expression of the Leka Ophiolite, Norway modeled from integrated gravity, magnetic and petrophysical data
Michels, Alexander; McEnroe, Suzanne; Fichler, Christine (Journal article; Peer reviewed, 2018)The ca. 497 Ma Leka Ophiolite Complex (LOC) comprises oceanic lithosphere that formed near the margin of Laurentia in a suprasubductionzone setting. The LOC was obducted onto Laurentia in the Early Ordovician and later ... -
Geophysical Mapping and Paleomagnetic Study of the Leka Ophiolite Complex
Michels, Alexander (Doctoral theses at NTNU;2019:32, Doctoral thesis, 2019)This thesis presents the results of a geophysical study of the Leka Ophiolite Complex (LOC) in central Norway, carried out to refine the understanding of the LOC’s sub surface geometry, fault structure and structural ... -
Geophysical mapping of the mafic and ultramafic rocks of the Seiland Igneous Province from the kilometer to the micrometer scale
Pastore, Zeudia (Doctoral theses at NTNU;2018:328, Doctoral thesis, 2018)The Seiland Igneous Province (SIP) is the largest complex of mafic and ultramafic intrusions in northern Norway, and one of the best preserved deep-seated magmatic plumbing systems in the world. The province, generated ... -
Hysteresis of Natural Magnetite Ensembles: Micromagnetics of Silicate‐Hosted Magnetite Inclusions Based on Focused‐Ion‐Beam Nanotomography
Nikolaisen, Even; Harrison, Richard; Fabian, Karl; McEnroe, Suzanne (Peer reviewed; Journal article, 2020)Three‐dimensional geometries of silicate‐hosted magnetic inclusions from the Harcus intrusion, South Australia have been determined using focused‐ion‐beam nanotomography (FIB‐nt). By developing an effective workflow, the ... -
Influence of lattice-preferred orientation with respect to magnetizing field on intensity of remanent magnetization in polycrystalline hemo-ilmenite
Robinson, P.; Fabian, Karl; McEnroe, Suzanne; Heidelbach, F (Journal article; Peer reviewed, 2012)New experimental and computational approaches to interpret orientation and intensity of natural remanent magnetization (NRM) carried by lamellar magnetism are applied to historic magnetic measurements on a collection of ... -
Lamellar magnetism and exchange bias in billion-year-old metamorphic titanohematite with nanoscale ilmenite exsolution lamellae-III. Atomic-magnetic basis for experimental results
Robinson, Peter; McEnroe, Suzanne; Harrison, Richard John; Fabian, Karl; Heidelbach, Florian; Jackson, Michael (Peer reviewed; Journal article, 2021)Lamellar magnetism is a source of remanent magnetization in natural rocks different from common bulk magnetic moments in ferrimagnetic minerals. It has been found to be a source for a wide class of magnetic anomalies with ... -
The Magnetic and Mineralogical Properties of the Stardalur Volcano, Iceland
Stange, Marianne Floen (Master thesis, 2016)The Stardalur volcano is located 20 km northeast of Reykjavik on the Esja Peninsula, Iceland. The volcano consists of Quaternary lavas which have revealed a high magnetic anomaly in both ground- and aeromagnetic surveying, ... -
Magnetic anomalies of the mafic/ultramafic seiland igneous province
Pastore, Zeudia; Fichler, Christine; McEnroe, Suzanne (Journal article; Peer reviewed, 2018)The Ediacaran Seiland Igneous Province (SIP) is the largest complex of mafic-ultramafic intrusions in northern Fennoscandia and one of the few examples of a well preserved deep-seated magmatic plumbing system. The major ... -
Magnetic mapping of fault zones in the Leka Ophiolite Complex, Norway
Michels, Alexander Christopher; Fichler, Christine; Pastore, Zeudia; McEnroe, Suzanne (Peer reviewed; Journal article, 2020)The island of Leka and surrounding skerries expose a complete suite of ophiolitic rocks, which are heavily faulted. Large areas consist of ultramafic rocks, which are locally hydrated and form serpentinites. Faults are ... -
Magnetic Mineralogy and Petrophysical Properties of Ultramafic Rocks: Consequences for Crustal Magnetism
ter Maat, Geertje; McEnroe, Suzanne; Church, Nathan Stewart; B. Larsen, Rune (Journal article; Peer reviewed, 2019)Magnetic properties from the Reinfjord Ultramafic Complex, in northern Norway, which formed as part of a deep magmatic conduit system, have been investigated to determine the magnetic signature of ultramafic rocks now ... -
Magnetic petrology of the Devonian Achala Batholith, Argentina: titanohaematite as an indicator of highly oxidized magma during crystallization and cooling
Geuna, S. E.; McEnroe, Suzanne; Robinson, Peter; Escosteguy, L.D. (Journal article; Peer reviewed, 2008)Devonian magmatism in the Eastern Sierras Pampeanas (Córdoba, Argentina) is represented by elliptical, porphyritic, batholithic, late- to post-orogenic monzogranites emplaced in a metamorphic—plutonic basement. Two groups ... -
Magnetic phases in hemo-ilmenite: Insight from low-velocity and high-field Mössbauer spectroscopy
Frandsen, C.; Mørup, S.; McEnroe, Suzanne; Robinson, Peter; Langenhorst, F. (Journal article; Peer reviewed, 2007)[1] We have studied natural samples of hemo‐ilmenite (ilmenite with hematite exsolution lamellae) by use of Mössbauer spectroscopy. The samples are from the Allard Lake intrusion in Quebec. The stoichiometric compositions ... -
Magnetic properties and potential field modeling of the Peculiar Knob metamorphosed iron formation, South Australia: An analog for the source of the intense Martian magnetic anomalies?
Schmidt, Phillip W.; McEnroe, Suzanne; Clark, David A.; Robinson, Peter (Journal article; Peer reviewed, 2007)[1] Magnetic property measurements show that the strongly metamorphosed Peculiar Knob iron formation (IF), South Australia, is coarse‐grained, high‐grade hematite with variable amounts of magnetite and maghemite. This body ...