Anna Rogowitz
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View article: Melt‐Supported Strain Localization at Eclogite‐Facies Conditions Triggered by Syn‐Metamorphic Strength Inversion
Melt‐Supported Strain Localization at Eclogite‐Facies Conditions Triggered by Syn‐Metamorphic Strength Inversion Open
In convergent high‐pressure settings dominated by dry mafic rocks, strain has been proposed to be predominantly localized in eclogite. However, the processes initiating strain localization, accommodating strain and rheological consequences…
View article: Differential stress induced mineral replacement around strong clasts in a weak biotite matrix
Differential stress induced mineral replacement around strong clasts in a weak biotite matrix Open
During progressive deformation, a strong inclusion in a weaker matrix causes a heterogeneous differential stress field, which not only results in strain localisation nucleating in the compressive quadrants of the clast but potentially also…
View article: Evolution of transient permeability and fluid flow in disseminated ores of Zaozigou orogenic gold deposit
Evolution of transient permeability and fluid flow in disseminated ores of Zaozigou orogenic gold deposit Open
Orogenic gold deposits are among the most important sources of gold globally. Ore occurs either in veins or disseminated within the host rock. While the dynamic permeability enhancement and fluid flow processes associated with vein-type or…
View article: Scaling up: Nanoscale insights into tectonic phenomena 
Scaling up: Nanoscale insights into tectonic phenomena  Open
Tectonic-scale geological phenomena are fundamentally controlled by nanoscale physiochemical mineral processes. Understanding these processes across multiple length scales is crucial for determining how mass and stress are transferred duri…
View article: Metamorphism induced strength inversion at high-pressure conditions – Implications for strain localization in eclogite.
Metamorphism induced strength inversion at high-pressure conditions – Implications for strain localization in eclogite. Open
The geodynamic evolution of the Earth is highly governed by the mechanical behavior of rocks at plate boundaries. In convergent settings, continental and/or oceanic mafic rocks are subducted to great depths where they experience high press…
View article: Nanostructural and chemical evolution of garnet during high-strain deformation
Nanostructural and chemical evolution of garnet during high-strain deformation Open
Garnet is a common high-pressure mineral in the Earth’s lithosphere. Considered a high-strength mineral stable across a wide range of pressure and temperature conditions, it is generally accepted that garnets can retain their microst…
View article: Three-dimensional mineral dendrites reveal a non-classical crystallization pathway
Three-dimensional mineral dendrites reveal a non-classical crystallization pathway Open
Manganese (Mn) dendrites are a common type of mineral dendrite that typically forms two-dimensional structures on rock surfaces. Three-dimensional (3D) Mn dendrites in rocks have rarely been reported, hence their growth implications have l…
View article: Eclogite dehydration and melt‐induced embrittlement at high‐pressure conditions
Eclogite dehydration and melt‐induced embrittlement at high‐pressure conditions Open
We document the complex interaction between metamorphic reactions and deformation behaviour at high‐pressure conditions by combining (micro‐) structural, petrographical and geochemical data from an eclogite body. The well‐equilibrated eclo…
View article: Influence of high‐strain deformation on major element mobility in garnet: Nanoscale evidence from atom probe tomography
Influence of high‐strain deformation on major element mobility in garnet: Nanoscale evidence from atom probe tomography Open
Garnet is a common rock‐forming mineral that occurs in a variety of rock types and over a wide range of pressure (P)–temperature (T) conditions in the Earth's lithosphere. Because garnet is considered a high‐strength mineral stable across …
View article: Partial melting of amphibole–clinozoisite eclogite at the pressure maximum (eclogite type locality, Eastern Alps, Austria)
Partial melting of amphibole–clinozoisite eclogite at the pressure maximum (eclogite type locality, Eastern Alps, Austria) Open
Pristine amphibole–clinozoisite eclogite from within the eclogite type locality (Hohl, Koralpe) of the Eastern Alps in Austria preserves centimetre-thick, concordant, laterally continuous leucocratic segregations of coarse-grained (up to ∼…
View article: Three-dimensional mineral dendrites reveal a nonclassical crystallization pathway
Three-dimensional mineral dendrites reveal a nonclassical crystallization pathway Open
Manganese (Mn) dendrites are a common type of mineral dendrite that typically forms two-dimensional structures on rock surfaces. Three-dimensional (3-D) Mn dendrites in rocks have rarely been reported, and so their growth implications have…
View article: The Effect of the Garnet Content on Deformation Mechanisms and Weakening of Eclogite: Insights From Deformation Experiments and Numerical Simulations
The Effect of the Garnet Content on Deformation Mechanisms and Weakening of Eclogite: Insights From Deformation Experiments and Numerical Simulations Open
We performed deformation experiments on omphacite‐garnet aggregates at a temperature of 1000°C, a confining pressure of 2.5 GPa, and a strain rate of 3 × 10 −6 s −1 and complemented them by numerical simulations to gain insight into the ro…
View article: Interaction of frictional and plastic deformation mechanisms in a clay-carbonate strike-slip fault (Northern Calcareous Alps, Austria)
Interaction of frictional and plastic deformation mechanisms in a clay-carbonate strike-slip fault (Northern Calcareous Alps, Austria) Open
This study presents microstructural investigations of limestone fault rocks formed in a shallow crustal (∼4 km), compressional segment of the Salzachtal-Ennstal-Mariazell-Puchberg fault in the Northern Calcareous Alps. The investigated fau…
View article: Unraveling the secrets of the Earth through nanogeology: A correlative microscopy approach
Unraveling the secrets of the Earth through nanogeology: A correlative microscopy approach Open
<p>Correlative analytical approaches involving high-spatial resolution microscopy techniques allow for the compositional measurements and spatial imaging of materials at the near-atomic scale. By combining electron backscatter diffra…
View article: How to creep and when? Deformation mechanisms at the eclogite type locality (Saualpe-Koralpe Complex, Eastern Alps, Austria).
How to creep and when? Deformation mechanisms at the eclogite type locality (Saualpe-Koralpe Complex, Eastern Alps, Austria). Open
<p>The presence of large volumes of eclogite in collision and subduction zones makes their formation and deformation highly relevant for the dynamics of convergent zones. There is however no consensus on the deformation behavior of e…
View article: Evolution of fluid pathways during eclogitization and their impact on formation and deformation of eclogite: A microstructural and petrological investigation at the type locality (Koralpe, Eastern Alps, Austria)
Evolution of fluid pathways during eclogitization and their impact on formation and deformation of eclogite: A microstructural and petrological investigation at the type locality (Koralpe, Eastern Alps, Austria) Open
Eclogites representing three strain stages from the type locality (Saualpe-Koralpe Complex, Eastern Alps, Austria) have been analyzed with regard to their microstructural, petrological and mechanical evolution during the gabbro-eclogite tr…
View article: Fluid inclusion hardening: Nanoscale evidence from naturally deformed pyrite
Fluid inclusion hardening: Nanoscale evidence from naturally deformed pyrite Open
<p>The interaction of trace elements, fluids and crystal defects plays a vital role in a crystalline material&#8217;s response to an applied stress. For example, dislocations can be arrested by the strain field of immobile defect…
View article: The Vari Unit in the hanging wall of the West Cycladic Detachment System (Agios Georgios, Greece): A small island with a big message
The Vari Unit in the hanging wall of the West Cycladic Detachment System (Agios Georgios, Greece): A small island with a big message Open
<p>The timing and kinematics of low-angle normal faulting in the Cyclades (Aegean region, Greece) has been a matter of debate, mainly because the detachments arch over the islands and only remnants of the fault systems and small klip…
View article: Opportunities and challenges in Teaching Structural Geology and Tectonics
Opportunities and challenges in Teaching Structural Geology and Tectonics Open
<p><span>In most university geosciences curricula, structural geology and tectonics (SGT) form a core part of teaching. While only a small percentage of Earth science graduates will become structural geologists, many will somed…
View article: Strain dependent microfabric evolution of experimentally deformed synthetic eclogites
Strain dependent microfabric evolution of experimentally deformed synthetic eclogites Open
<p>Deformed eclogites often reveal interconnected layers of omphacite and intercalated elongated garnet clusters. The evolution of such fabrics is usually associated with strain localization and rheological weakening. To better under…
View article: HP/HT deformation experiments of garnet-omphacite aggregates &#8211; influence of volume fractions on deformation mechanisms.
HP/HT deformation experiments of garnet-omphacite aggregates – influence of volume fractions on deformation mechanisms. Open
<p>Forming in oceanic and continental subduction zones during high to ultra-high-pressure metamorphism, eclogites play an important role in convergent settings. To improve our understanding of eclogite deformation behaviour with resp…
View article: Dislocation nucleation at nanoscale fluid inclusions: Direct observation from atom probe tomography data of naturally deformed pyrite
Dislocation nucleation at nanoscale fluid inclusions: Direct observation from atom probe tomography data of naturally deformed pyrite Open
<p>In recent years, increasing developments in microscopy and microanalysis have allowed for the direct observation of nanoscale crystalline defects (i.e. dislocations). These defects are particularly important in naturally deformed …
View article: Fluid assisted formation and deformation of eclogites - dislocation vs. dissolution-reprecipitation creep
Fluid assisted formation and deformation of eclogites - dislocation vs. dissolution-reprecipitation creep Open
<p>The classical eclogite assemblage consists of the non-hydrous minerals garnet and omphacite. Nevertheless, it is widely accepted that the transformation of mafic magmatic rocks into eclogite requires fluid infiltration. The most c…
View article: A 2D and 3D nanostructural study of naturally deformed pyrite: assessing the links between trace element mobility and defect structures
A 2D and 3D nanostructural study of naturally deformed pyrite: assessing the links between trace element mobility and defect structures Open
The links between deformation-induced micro- and nanostructures and trace element mobility in sulphide minerals have recently become a popular subject of research in the Earth sciences due to its connections with metallic ore paragenesis. …
View article: New Applications to Atom Probe Tomography: Insights on Trace Element Diffusion in Naturally Deformed Minerals
New Applications to Atom Probe Tomography: Insights on Trace Element Diffusion in Naturally Deformed Minerals Open
The links between deformation-induced microstructures and trace element diffusion is an important theme within material sciences and geosciences.In material sciences, investigating the interplay between impurities and crystalline defects h…
View article: Direct observation of dislocation nucleation in pyrite using combined electron channelling contrast imaging and electron backscatter diffraction
Direct observation of dislocation nucleation in pyrite using combined electron channelling contrast imaging and electron backscatter diffraction Open
Crystal‐plastic deformation is one of the main mechanisms that can accommodate large amounts of strain within the lithosphere. Despite the requirement of understanding dislocation nucleation and arrangement, the only accepted method for di…
View article: Microstructural analysis and calcite piezometry on hydrothermal veins: Insights into the deformation history of the Cocos Plate at Site U1414 (IODP Expedition 344)
Microstructural analysis and calcite piezometry on hydrothermal veins: Insights into the deformation history of the Cocos Plate at Site U1414 (IODP Expedition 344) Open
In this study we present microstructural data from hydrothermal veins in the sedimentary cover and the igneous basement recovered from Hole U1414A, Integrated Ocean Drilling Program (IODP) Expedition 344 (Costa Rica Seismogenesis Project),…
View article: Strain localization in ultramylonitic marbles by simultaneous activation of dislocation motion and grain boundary sliding (Syros, Greece)
Strain localization in ultramylonitic marbles by simultaneous activation of dislocation motion and grain boundary sliding (Syros, Greece) Open
Extreme strain localization occurred in the centre of the cross-cutting element of a flanking structure in almost pure calcite marbles from Syros, Greece. At the maximum displacement of 120 cm along the cross-cutting element, evidence of g…