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Ismay Vénice Akker

Ismay Vénice Akker
ETH Zürich Geological Institute

PhD Earth Science

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8
Publications
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17
Citations

Publications

Publications (8)
Article
Full-text available
Estimating the porosity of slates is of great interest for the industries dealing with sub-surface areas such as CO2 sequestration, nuclear waste disposal and shale gas but also for engineering purposes in terms of mechanical stability for underground or surface constructions. In this study, we aim at understanding estimates of the porosity of slat...
Article
Full-text available
The Ossa-Morena Zone (OMZ) has a complex geological history including both Cadomian and Variscan orogenic events. Therefore, the OMZ plays an important role in understanding the geodynamic evolution of Iberia. However, the P–T–t evolution of the OMZ is poorly documented. Here, we combine structural and metamorphic analyses with new geochronological...
Article
Full-text available
White mica has been widely used to date microstructures and tectonic events in faults, shear-zones and folds because of its suitability for radiogenic dating. However, complex (i) microstructural evolution, (ii) individual chemical evolution of the K-bearing phases, (iii) mixing of ‘detrital grains’ with newly formed and/or recrystallized or chemic...
Article
Full-text available
Here, we study slate microfabrics from the exhumed accretionary wedge of the central European Alps and focus on the development of foliation. High-resolution micrographs from novel BIB-SEM imaging and Synchrotron X-ray Fluorescence Microscopy are analysed with 2D auto-correlation functions to quantify the geometry and spacing of slate microfabrics...
Conference Paper
The thick regionally undeformed main section of Opalinus Clay of central northern Switzerland (between Olten and Schaffhausen) is foreseen to host the Swiss deep geological repository for radioactive waste. Currently, Nagra conducts a deep drilling campaign across three potential siting regions. We are performing a combined microstructural and geoc...
Article
Full-text available
Estimating porosity of slates is of great interest for the recently rising industries dealing with the underground such as CO2 sequestration, nuclear waste disposal and shale gas but also for engineering purposes in terms of mechanical stability for underground or surface constructions. In this study, we aim understanding estimates of porosity of s...
Conference Paper
Full-text available
Determination of the porosity of slates gains wide interest, because slates become increasingly important in industries of underground storage and in shale gas exploration. Slates are the high-grade end-member of sheet-silicate-rich rocks and define a strongly anisotropic microstructure. Bulk rock measurements such as He-pycnometry and Mercury Intr...
Conference Paper
Full-text available
Cleavage is still one of the most important structural elements used in structural geology. The understanding of cleavage evolution under changing physico-chemical conditions is therefore a key for an improved understanding of cleavage forming processes. Recent technical advances in the field of artefact-free preparation of these delicate samples,...

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Projects

Project (1)
Project
Investigating deformation mechanisms and associated changes in microstructure and (nano)porosity in sheet silicate rich rocks as function of strain and metamorphic gradients. A study using natural samples from the Flysch units, Glarus area, Switzerland.