K-Ar illite and apatite fission track constraints onbrittle faulting and the evolution of the northern Norwegian passive margin

Determining the timing of post-Caledonian brittle faulting in northern Norway is important for the understanding of the extensional tectonic evolution of the north Norwegian continental margin. Fault gouges from the Troms and Vesterålen regions of northern Norway yield Carboniferous to Permian and Carboniferous to Cretaceous K–Ar illite ages, respectively. The results show a contrast in fault activity and exhumation between the Troms and the Vesterålen regions: while major faulting in the Troms region appears to have ceased after the Permian faulting event, faulting continued into at least the Cretaceous in the Vesterålen region. The findings highlight the importance of a widespread Permian tectonic event followed by a distinct southwestward migration of post-Permian tectonic activity on the north Norwegian passive margin. Late Triassic to Early Jurassic apatite fission track ages do not show significant age offsets across major fault zones in Troms, indicating that most or all of fault activity took place prior to the Late Triassic. The thermal history models are consistent and indicate continuous cooling to about 60 °C in the Late Permian–Triassic

"Die gesunde Kommune" im Lichte "großer Wenden": Ein sozialökologisch fundiertes Ziel kommunaler Gesundheitsförderung ( KoGeFö)

BACKGROUND: Communities are environments which can protect and promote or, conversely, can endanger the health of their members. Community health promotion takes place in and with a community. Implementing programs and measures in a community mainly focus on individuals and reducing endpoints such as morbidity and mortality, as well as increasing the quality of life. Extending this individual-focused approach, health promotion with a community aims at developing a “healthy community”. OBJECTIVES: What does health promotion with the community aim at? When is a community “healthy”? Beyond a reduction of endpoints such as the incidence and prevalence of nonommunicable diseases, what is the goal of programs, measures, and activities to motivate and support residents to adopt health-promoting behaviors? MATERIALS AND METHODS: Against the backdrop of “grand societal challenges” and drawing on socioecological approaches, the paper discusses what constitutes a “healthy community” and what health promotion with the community aims to achieve. RESULTS: A “healthy community” develops through cooperation of multiple stakeholders from different sectors such as politics, administration, civil society, and residents. The “healthy community” is designed as a fair environment. It opens up possibilities for the individual to act and provides opportunities for them to pursue personally important goals. CONCLUSIONS: The socioecological perspective sharpens the view for the dynamic interaction of environmental and individual factors. Fairness, spaces of opportunity, and realization chances are three criteria that are suitable as indicators for a “healthy community”

A new approach to crystallographic orientation measurement for apatite fission track analysis : effects of crystal morphology and implications for automation

Apatite fission track analysis and in particular, computer-assisted fission track recognition require the determination of crystallographic orientation, crystal morphology, cracks, fractures and inclusions. The selection of a crystal for fission track analysis has largely been based on its surface and track etching characteristics that, in conventional fission track dating, is performed by the analyst. This requires manual scanning of the entire mount for suitable grains, which is a very time-intensive process during manual fission track counting. Therefore, a computer-assisted grain characterisation system is of interest to allow for an automated pre-selection of suitable crystals. With the use of a fully automated Fabric Analyser, c-axis orientations can be measured inside an apatite crystal for each pixel with a spatial resolution of 5 [mu]m. The results are represented in geometric quality and retardation maps consisting of the c-axis orientations for each pixel and two quality values evaluating each orientation. These maps allow the determination of the crystallography of the apatite grain as well as its outline. In addition, most of the crystal morphologies, fractures and impurities, which can influence automated fission track recognition techniques based on image analysis, are determinable using the quality maps. On the other hand, the method is not sensitive to smaller crystal cracks, high fission track densities or coating. The quantification of the crystal geometric properties by this method is a step forward to develop a fully automated fission track analysis process

Nachhaltige Aquakultur in Deutschland - Chancen und Herausforderungen

"Forschen für die Zukunft unserer Gewässer" ist das Leitmotiv des IGB. Dazu gehört die objektive und evidenzbasierte Information und Beratung von Politik, Behörden, Verbänden, Wirtschaft, Bildungseinrichtungen und der Öffentlichkeit. Im Rahmen seiner eigenen Schriftenreihe IGB Outlines, zu denen auch der IGB Policy Brief gehört, macht das Institut forschungsbasiertes Wissen kostenfrei für die Öffentlichkeit zugänglich. Für die Inhalte der Beiträge sind die jeweiligen Autor*innen verantwortlich

A geospatial platform for the tectonic interpretation of low-temperature thermochronology Big Data

Abstract Low-temperature thermochronology is a powerful tool for constraining the thermal evolution of rocks and minerals in relation to a breadth of tectonic, geodynamic, landscape evolution, and natural resource formation processes through deep time. However, complexities inherent to these analytical techniques can make interpreting the significance of results challenging, requiring them to be placed in their geological context in 4-dimensions (3D + time). We present a novel tool for the geospatial archival, analysis and dissemination of fission-track and (U-Th)/He data, built as an extension to the open-access AusGeochem platform ( https://ausgeochem.auscope.org.au ) and freely accessible to scientists from around the world. To demonstrate the power of the platform, three regional datasets from Kenya, Australia and the Red Sea are placed in their 4D geological, geochemical, and geographic contexts, revealing insights into the tectono-thermal evolutions of these areas. Beyond facilitating data interpretation, the archival of fission track and (U-Th)/He (meta-)data in relational schemas unlocks future potential for greater integration of thermochronology and numerical geoscience techniques. The power of formatting data to interface with external tools is demonstrated through the integration of GPlates Web Service with AusGeochem, enabling thermochronology data to be readily viewed in their paleogeographic context through deep time from within the platform