Peter Tropper
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View article: Expanding the Tephrochronological Record in the Alps: Discovery of the Laacher See Tephra in Lake Plansee (Austria)
Expanding the Tephrochronological Record in the Alps: Discovery of the Laacher See Tephra in Lake Plansee (Austria) Open
We present the first documented occurrence of the Laacher See tephra (LST) in the Eastern Alps, identified in lake Plansee, Austria. The LST is a key chronostratigraphic marker for correlating and dating Late Glacial sedimentary archives. …
View article: The 3D Visibility of Rust: Micro Computed Tomography Investigations of a Roman Iron Nail from Aguntum
The 3D Visibility of Rust: Micro Computed Tomography Investigations of a Roman Iron Nail from Aguntum Open
The restoration of iron finds is still a particularly complex area within the science of archaeological conservation, as severe signs of corrosion occur from the moment of recovery and the associated radical change in environmental paramet…
View article: Origin and Evolution of High Nickel Concentrations in Rock Glacier Springs
Origin and Evolution of High Nickel Concentrations in Rock Glacier Springs Open
Global warming has accelerated the degradation of alpine permafrost, significantly altering hydrological and hydrogeochemical processes in mountainous catchments. Among these changes, rock glaciers release spring waters with rising solute …
View article: Mineralogical and Micro-Computer Tomographic (μCT) Texture Investigations of Egyptian Blue Spheres (Aguntum, East Tyrol; Retznei and Wagna, Flavia Solva, South Styria)
Mineralogical and Micro-Computer Tomographic (μCT) Texture Investigations of Egyptian Blue Spheres (Aguntum, East Tyrol; Retznei and Wagna, Flavia Solva, South Styria) Open
Egyptian Blue was the first synthetic pigment by humankind. It contains of cuprorivaite, which is a calcium-copper-silicate (CaCuSi4O10). This study reports the results of a mineralogical and computer tomographic study of Egyptian Blue fin…
View article: Don’t always use metapelites: what do amphibolites and pegmatites reveal about the prograde Eoalpine metamorphic evolution of the Austroalpine nappe stack in the Vinschgau valley (S-Tyrol, Italy)?
Don’t always use metapelites: what do amphibolites and pegmatites reveal about the prograde Eoalpine metamorphic evolution of the Austroalpine nappe stack in the Vinschgau valley (S-Tyrol, Italy)? Open
The geological map sheet Schlanders (Project CARG F012) offers the chance to carefully investigate the metamorphic evolution of the Austroalpine units in the Vinschgau and their tectonic contacts and to implement them into a tectonic model…
View article: Sulfur and metal mobilization during the magmatic-hydrothermal evolution of the Atlantis Bank oceanic core complex: implications for seafloor massive sulfide deposits formation at slow and ultra-slow spreading ridges
Sulfur and metal mobilization during the magmatic-hydrothermal evolution of the Atlantis Bank oceanic core complex: implications for seafloor massive sulfide deposits formation at slow and ultra-slow spreading ridges Open
The specific oceanic crust architecture, magmatism, hydrothermal fluid circulation and lithologies at oceanic core complexes (OCCs) imply different S and metal (e.g. Cu, Zn, Co, Ni) fluxes relative to well-structured oceanic crust at-fast …
View article: Petrography, sedimentology and Neoalpine metamorphism of the Idalp ophiolite, Steinsberg and Idalp formations, Lower Engadine Window, Tyrol (Austria)
Petrography, sedimentology and Neoalpine metamorphism of the Idalp ophiolite, Steinsberg and Idalp formations, Lower Engadine Window, Tyrol (Austria) Open
The Lower Engadine Window is the only tectonic window in the Eastern Alps in which all three Penninic nappes are exposed. The focus of this study lies on the sedimentologic investigation of the Jurassic Steinsberg and Idalp formations of t…
View article: Diabase is petrologists best friend: quantitative <i>P-T</i> constraints on the NW-SE trending Eoalpine metamorphic gradient in the western Austroalpine nappe stack (Ötztal Nappe, Texel Nappe, Silvretta Nappe) using metamorphosed mafic dikes
Diabase is petrologists best friend: quantitative <i>P-T</i> constraints on the NW-SE trending Eoalpine metamorphic gradient in the western Austroalpine nappe stack (Ötztal Nappe, Texel Nappe, Silvretta Nappe) using metamorphosed mafic dikes Open
The Ötztal Nappe (Austroalpine Superunit, Eastern Alps) is volumetrically the largest polymetamorphic nappe of the western Austroalpine nappe stack and consists of paragneisses and micaschists with various intercalations of orthogneisses, …
View article: Of Fire and Water Microarchaeological Evidence of Mining, Rituals and Floods in North Tyrol's Kropfsberg Mine (Austria)
Of Fire and Water Microarchaeological Evidence of Mining, Rituals and Floods in North Tyrol's Kropfsberg Mine (Austria) Open
Kropfsberg, located near Reith im Alpbachtal, in North Tyrol (Austria), has been exploited for its copper ores for centuries, since at least the Early Iron Age. Excavations conducted in 2020 by the University of Innsbruck exposed the detai…
View article: Visible and invisible complexities in low-to medium grade metamorphic rocks: mineralogical and petrological constraints on the Variscan metamorphic gradient in the Southalpine metamorphic basement (Brixen quartzphyllites, Northern Italy)
Visible and invisible complexities in low-to medium grade metamorphic rocks: mineralogical and petrological constraints on the Variscan metamorphic gradient in the Southalpine metamorphic basement (Brixen quartzphyllites, Northern Italy) Open
The metamorphic basement of the Southern Alps occurs in the Brixen unit (Meran – Brixen – Timau, “Brixner Quarzphyllite”), the Valsugana Unit (Trient – Borgo Valsugana – Agordo) and the Recoaro Unit (Rec…
View article: Orogenic treasures: Ziller Valley garnets and their transformation from petrogenetic indicator to gemstone
Orogenic treasures: Ziller Valley garnets and their transformation from petrogenetic indicator to gemstone Open
Garnet has been utilized for various applications for centuries. It is an important phase for interpreting geological and mineralogical processes due to its wide range of stability and occurrence in various geochemical environments. In the…
View article: Application of micro‐CT to resolve textural properties and assess primary sedimentary structures of deep‐marine sandstones
Application of micro‐CT to resolve textural properties and assess primary sedimentary structures of deep‐marine sandstones Open
Over the past decade, there has been growing interest in the sedimentological community to use micro X‐ray computed tomography to analyse microfacies in sediment cores. However, little attention has been paid to the application of micro‐co…
View article: CSD 2262769: Experimental Crystal Structure Determination
CSD 2262769: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: The metabasites from the Texel Unit (Austroalpine nappe stack): markers of Cretaceous intracontinental subduction and subsequent collision
The metabasites from the Texel Unit (Austroalpine nappe stack): markers of Cretaceous intracontinental subduction and subsequent collision Open
Eclogites in the Texel Unit (Austroalpine nappe stack; Eastern Alps, South Tyrol, Italy) represent the westernmost out-crops of the E-W striking Eoalpine High-Pressure Belt (EHB). East of the Tauern Window, the EHB forms part of a Cretaceo…
View article: Stone Tools from Prehistoric Mining Sites in North Tyrol, Austria: Typology – Terminology – Material Properties
Stone Tools from Prehistoric Mining Sites in North Tyrol, Austria: Typology – Terminology – Material Properties Open
Mining archaeological field prospections and excavations conducted by the Research Center HiMAT at the University of Innsbruck yielded proof of extensive copper ore mining from the late Middle Bronze Age to the Early Iron Age (1300 - 700 B…
View article: Application of micro-CT to deep-marine outcrop data: towards a new tool to better assess primary sedimentary structures and processes at their origin
Application of micro-CT to deep-marine outcrop data: towards a new tool to better assess primary sedimentary structures and processes at their origin Open
A new application of micro-CT on consolidated sediment-gravity flow deposits is presented with the objectives to characterize its internal sedimentary three-dimensional (3D) structures. The proposed concept is applied to three types of dee…
View article: The thermotectonic evolution in front of the Dolomites Indenter
The thermotectonic evolution in front of the Dolomites Indenter Open
<p>The Adriatic Indenter is subdivided into a western and an eastern domain termed Canavese-Insubric Indenter and Dolomites Indenter, respectively, and offset for ~75 km from late Oligocene onwards by the NNE&#8208;SSW&#8208;…
View article: First results of zoned garnet Lu-Hf geochronology in micaschists from the Eoalpine high-pressure-belt, Eastern Alps
First results of zoned garnet Lu-Hf geochronology in micaschists from the Eoalpine high-pressure-belt, Eastern Alps Open
<p>In collisional orogens continental crust is subducted to (ultra-)high-pressure (HP/UHP) conditions as constrained by petrologic, tectonic and geophysical observations. Despite a wealth of studies on the subduction and exhumation o…
View article: Petrological and geochronological investigations on the individual nappes of the Meran-Mauls nappe stack (Austroalpine unit/South Tyrol, Italy)
Petrological and geochronological investigations on the individual nappes of the Meran-Mauls nappe stack (Austroalpine unit/South Tyrol, Italy) Open
The Meran-Mauls nappe stack is part of the Austroalpine unit in South Tyrol (Italy). There it holds a special position directly in front of the Southalpine Dolomites indenter and west of the Tauern Window. It is situated in the hanging wal…
View article: Direct dating of lithic surface artifacts using luminescence
Direct dating of lithic surface artifacts using luminescence Open
Exploiting the luminescence signal stored in rock surfaces allows numerical dating of archaeological artifacts.
View article: Determining the speed of intracontinental subduction &#8211; preliminary results of zoned garnet geochronology in micaschists from the Schneeberg and Radenthein Complexes, Eastern Alps
Determining the speed of intracontinental subduction – preliminary results of zoned garnet geochronology in micaschists from the Schneeberg and Radenthein Complexes, Eastern Alps Open
<p>In collisional orogens continental crust is subducted to (ultra-)high-pressure (HP/UHP) conditions as constrained by petrologic, tectonic and geophysical observations. Despite a wealth of studies on the subduction and exhumation o…
View article: Beyond ultra-high pressure metamorphism: evidence for extremely high pressure conditions during frictional fusion in gigantic landslides using micro-Raman spectroscopy of quartz: the Tsergo Ri (Langtang Himal, Nepal) rockslide
Beyond ultra-high pressure metamorphism: evidence for extremely high pressure conditions during frictional fusion in gigantic landslides using micro-Raman spectroscopy of quartz: the Tsergo Ri (Langtang Himal, Nepal) rockslide Open
<p>The Tsergo Ri rockslide represents one of the world's biggest rockslides in crystalline rocks (original volume: 10<sup>10</sup> m<sup>3</sup>). The mass movement comprises migmatites, leucogranites, orthogn…
View article: Determining the speed of intracontinental subduction &#8211; preliminary results of zoned garnet geochronology in micaschists from the Schneeberg Complex, Eastern Alps.
Determining the speed of intracontinental subduction – preliminary results of zoned garnet geochronology in micaschists from the Schneeberg Complex, Eastern Alps. Open
<p>In collisional orogens continental crust is subducted to (ultra-)high-pressure (HP/UHP) conditions as constrained by petrologic, tectonic and geophysical observations. These (U)HP rocks are exhumed by an extremely fast process (fe…
View article: Rutile petrochronology of Eo-Archaean metasediments from the southern Inukjuak domain, Qu&#233;bec (Canada) and Akila island (SW Greenland)
Rutile petrochronology of Eo-Archaean metasediments from the southern Inukjuak domain, Québec (Canada) and Akila island (SW Greenland) Open
<p>The world&#8217;s oldest rocks of demonstrable volcano-sedimentary origin comprise the Archean &#8220;supracrustal belts&#8221;, in which they occur as variably deformed enclaves within ancient metamorphosed granite-gr…
View article: Petrological constraints on ultra-high pressure metamorphism and frictionite formation in a catastrophic rockslide: The Koefels event (Eastern Alps).
Petrological constraints on ultra-high pressure metamorphism and frictionite formation in a catastrophic rockslide: The Koefels event (Eastern Alps). Open
<p>The P-T conditions in extremely-rapid gravity-driven rockslides are difficult to constrain from the descended rock mass itself. Here, we report mineralogical observations from the Koefels rockslide and their interpretation. The Ko…
View article: New constraints on the Sulfur isotope signature of the sub-continental lithospheric mantle wedge: in situ &#948;34S analyses of pentlandite from the exhumed orogenic garnet-bearing peridotite of the Ulten Zone, Eastern Italian Alps
New constraints on the Sulfur isotope signature of the sub-continental lithospheric mantle wedge: in situ δ34S analyses of pentlandite from the exhumed orogenic garnet-bearing peridotite of the Ulten Zone, Eastern Italian Alps Open
<p>Orogenic peridotites associated with high-grade felsic rocks record mass exchange between crust and mantle reservoirs at convergent plate margins. In this geodynamic framework, fluids released by submerging slabs can mobilize redo…