Steffi Burchardt
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View article: Structural aureoles as proxies for magma emplacement in the brittle crust: Evidence for transtensional pluton formation at Slaufrudalur, Iceland
Structural aureoles as proxies for magma emplacement in the brittle crust: Evidence for transtensional pluton formation at Slaufrudalur, Iceland Open
View article: Strike-slip faulting and hydrothermal alteration in a Proterozoic rapakivi batholith: implications for reservoir formation and geothermal exploration in crystalline cratons—Part 1
Strike-slip faulting and hydrothermal alteration in a Proterozoic rapakivi batholith: implications for reservoir formation and geothermal exploration in crystalline cratons—Part 1 Open
Ancient crystalline basement cratons are traditionally considered challenging geothermal targets due to their low heat flow, limited porosity, and low matrix permeability. However, fractured and hydrothermally altered crystalline basement …
View article: The Magnetic Fingerprint of Pulsed Granite Magma Emplacement and Alteration: Slaufrudalur Pluton, Iceland
The Magnetic Fingerprint of Pulsed Granite Magma Emplacement and Alteration: Slaufrudalur Pluton, Iceland Open
Magma reservoirs typically form through the incremental emplacement of smaller magma pulses over extended timescales. Pulsed reservoir growth significantly impacts a magma body's temperature evolution, chemical differentiation potential, a…
View article: Unpacking and navigating complexity in disaster risk reduction
Unpacking and navigating complexity in disaster risk reduction Open
Disaster risk reduction (DRR) is a highly complex undertaking, carried out within dynamic and interconnected human-environment systems. This high level of complexity poses persistent challenges for planning, coordination, and implementatio…
View article: Tectonic Stress as the Driving Mechanism for Dike Opening in an Oblique Rift Setting: A Deformation Model of the 2021 Fagradalsfjall Dike, Iceland
Tectonic Stress as the Driving Mechanism for Dike Opening in an Oblique Rift Setting: A Deformation Model of the 2021 Fagradalsfjall Dike, Iceland Open
Repeated dike‐intrusions often occur in zones where extensional stress has accumulated. Still, geodetic modeling of observed dike‐induced ground deformation often ignores the contribution of tectonic stress. On the obliquely spreading Reyk…
View article: The Influence of Variable Host Rock Cohesion and Magma Viscosity on Intrusion‐Fault Interaction: Insights From Laboratory Models
The Influence of Variable Host Rock Cohesion and Magma Viscosity on Intrusion‐Fault Interaction: Insights From Laboratory Models Open
Magma transport through the Earth's shallow crust can be affected by pre‐existing weaknesses like faults. Consequently, fault‐channeled magma may reach the surface in unexpected locations. Hence, better understanding of magma‐fault interac…
View article: Development of permeable networks by viscous-brittle deformation in a shallow rhyolite intrusion. Part 2: Microstructural analysis
Development of permeable networks by viscous-brittle deformation in a shallow rhyolite intrusion. Part 2: Microstructural analysis Open
View article: Development of permeable networks by viscous-brittle deformation in a shallow rhyolite intrusion. Part 1: Field evidence
Development of permeable networks by viscous-brittle deformation in a shallow rhyolite intrusion. Part 1: Field evidence Open
View article: Stratigraphy and structure of Chachahuén volcanic complex, southern Mendoza province, Argentina
Stratigraphy and structure of Chachahuén volcanic complex, southern Mendoza province, Argentina Open
View article: Complex magma flow dynamics within fossil dykes: linking multi-method observations across scales from the Reyðarfjörður dyke swarm, eastern Iceland.
Complex magma flow dynamics within fossil dykes: linking multi-method observations across scales from the Reyðarfjörður dyke swarm, eastern Iceland. Open
Since dykes represent the main mechanism for magma movement from the Earth’s crust to the surface, understanding how they generate a path to feed an eruption is crucial for volcanic hazard assessment. To this purpose, key information…
View article: Volcanic unrest as seen from the magmatic source: Reyðarártindur pluton, Iceland
Volcanic unrest as seen from the magmatic source: Reyðarártindur pluton, Iceland Open
View article: Development of Permeable Networks by Viscous-Brittle Deformation in a Shallow Rhyolite Intrusion. Part 2: Microstructural Analysis
Development of Permeable Networks by Viscous-Brittle Deformation in a Shallow Rhyolite Intrusion. Part 2: Microstructural Analysis Open
View article: Volcanic unrest as seen from the magmatic source– Reyðarártindur pluton, Iceland
Volcanic unrest as seen from the magmatic source– Reyðarártindur pluton, Iceland Open
How the Earth’s crust accommodates magma emplacement influences the signals that can be detected by monitoring volcano seismicity and surface deformation, which are routinely used to forecast volcanic eruptions. However, we lack direct obs…
View article: Non-Newtonian magma flow in a growing laccolith and stress induced by dyke formation in a tectonically active region: two examples of advanced multiphysics models.
Non-Newtonian magma flow in a growing laccolith and stress induced by dyke formation in a tectonically active region: two examples of advanced multiphysics models. Open
Understanding the formation and development of magmatic plumbing systems is fundamental to comprehend the dynamics of volcanic processes. Magmatic plumbing systems form the primary path to transport magma through the Earth’s crust an…
View article: Geothermal potential of small sub-volcanic intrusions in a typical Icelandic caldera setting
Geothermal potential of small sub-volcanic intrusions in a typical Icelandic caldera setting Open
Geothermal exploration targets large magmatic intrusions as heat sources because of their size, longevity, and amount of stored energy, but as shallow volcanic plumbing systems comprise numerous smaller intrusions, their geothermal potenti…
View article: Developments in the study of volcanic and igneous plumbing systems: outstanding problems and new opportunities
Developments in the study of volcanic and igneous plumbing systems: outstanding problems and new opportunities Open
Prior to and during eruptions, magma is stored and transported within volcanic and igneous plumbing systems (VIPS) that comprise a network of magma reservoirs and sheet intrusions. The study of these VIPS requires the combination of knowle…
View article: Geology of a Neogene caldera cluster in the Borgarfjörður eystri–Loðmundarfjörður area, Eastern Iceland
Geology of a Neogene caldera cluster in the Borgarfjörður eystri–Loðmundarfjörður area, Eastern Iceland Open
The Borgarfjörður eystri–Loðmundarfjörður area in Eastern Iceland hosts several volcanic centres in a relatively small area. Large volumes of silicic, as well as an unusual amount of intermediate rocks, occur in this area, alongside other …
View article: Volcanologists—who are we and where are we going?
Volcanologists—who are we and where are we going? Open
Equity, diversity and inclusivity (EDI) are principles all scientific groups and organisations should strive to achieve as they secure working conditions, policies and practices that not only promote high-quality scientific output but also…
View article: Enrichment of immobile elements in synmagmatic fractures
Enrichment of immobile elements in synmagmatic fractures Open
<p>Useful minerals containing rare Earth elements (REE) and metals are sourced from magma bodies, but exactly how these elements initially leave the magma is not well known. Here we present textural and chemical analyses of mineral-f…
View article: How studying solidified, exposed magma chambers helps to interpret volcano deformation and pre-eruptive unrest
How studying solidified, exposed magma chambers helps to interpret volcano deformation and pre-eruptive unrest Open
<p>The remnants of kilometre-sized solidified magma bodies exposed in volcanic areas are the product of magma accumulation beneath active volcanoes. These magma bodies can have formed over time spans ranging from months to hundreds o…
View article: Geothermal potential of small sub-volcanic intrusions in a typical Icelandic caldera setting
Geothermal potential of small sub-volcanic intrusions in a typical Icelandic caldera setting Open
<p>Geothermal exploration targets large magmatic intrusions as heat sources because of their size, longevity, and amount of stored energy, but as shallow volcanic plumbing systems comprise numerous smaller intrusions, their geotherma…
View article: Thermal impact of dykes on ignimbrite and implications for fluid flow channelisation in a caldera
Thermal impact of dykes on ignimbrite and implications for fluid flow channelisation in a caldera Open
Ignimbrites within calderas host intrusions with hazardous and/or economically significant hydrothermal systems. The Hvítserkur ignimbrite at Breiðuvík caldera, north-eastern Iceland, is intruded by basaltic dykes. Our data show that the i…
View article: Thermal impact of dykes on ignimbrite and implications for fluid flow compartmentalisation in calderas
Thermal impact of dykes on ignimbrite and implications for fluid flow compartmentalisation in calderas Open
Ignimbrites within calderas host intrusions with hazardous and/or economically significant hydrothermal systems. The Hvítserkur ignimbrite at Breiðuvík caldera, north-eastern Iceland, is intruded by basaltic dykes. Our data show that the i…
View article: Rapid Assembly and Eruption of a Shallow Silicic Magma Reservoir, Reyðarártindur Pluton, Southeast Iceland
Rapid Assembly and Eruption of a Shallow Silicic Magma Reservoir, Reyðarártindur Pluton, Southeast Iceland Open
Although it is widely accepted that shallow silicic magma reservoirs exist, and can feed eruptions, their dynamics and longevity are a topic of debate. Here, we use field mapping, geochemistry, 3D pluton reconstruction and a thermal model …
View article: Volcanologists - Who are we and where are we going?
Volcanologists - Who are we and where are we going? Open
Equity, diversity and inclusivity (EDI) are principles all scientific groups and organisations should strive to achieve as they secure working conditions, policies and practices that not only promote high-quality scientific output but also…
View article: Geochemistry and 3D reconstruction dataset for the Reyðarártindur Pluton, Iceland
Geochemistry and 3D reconstruction dataset for the Reyðarártindur Pluton, Iceland Open
-Whole rock major and trace element geochemistry -3D reconstruction of pluton -Feldspar EMP profiles -Sample GPS locations
View article: Geochemistry and 3D reconstruction dataset for the Reyðarártindur Pluton, Iceland
Geochemistry and 3D reconstruction dataset for the Reyðarártindur Pluton, Iceland Open
-Whole rock major and trace element geochemistry -3D reconstruction of pluton -Feldspar EMP profiles -Sample GPS locations
View article: Emplacement and Segment Geometry of Large, High-Viscosity Magmatic Sheets
Emplacement and Segment Geometry of Large, High-Viscosity Magmatic Sheets Open
Understanding magma transport in sheet intrusions is crucial to interpreting volcanic unrest. Studies of dyke emplacement and geometry focus predominantly on low-viscosity, mafic dykes. Here, we present an in-depth study of two high-viscos…
View article: Geology of a Neogene caldera cluster in Northeast Iceland – clues into rift zone architecture on a young Iceland
Geology of a Neogene caldera cluster in Northeast Iceland – clues into rift zone architecture on a young Iceland Open
The Borgarfjörður-Loðmundarfjörður area in Northeast Iceland hosts an unusual volume of silicic rocks, as well as volcanic and sub-volcanic structures emplaced in the Miocene between 13.5 and 12.2 Ma. Here, we summarise the geology of the …
View article: Decrypting Magnetic Fabrics (AMS, AARM, AIRM) Through the Analysis of Mineral Shape Fabrics and Distribution Anisotropy
Decrypting Magnetic Fabrics (AMS, AARM, AIRM) Through the Analysis of Mineral Shape Fabrics and Distribution Anisotropy Open
Anisotropy of magnetic susceptibility (AMS) and anisotropy of magnetic remanence (AARM and AIRM) are efficient and versatile techniques to indirectly determine rock fabrics. Yet, deciphering the source of a magnetic fabric remains a crucia…