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The Mooshla Intrusive Complex (MIC) is an Archean, low-Al, polyphase tonalite-trondhjemite-quartz diorite-gabbroic magmatic body located in the Doyon-Bousquet-LaRonde mining camp of the Abitibi greenstone belt, Qu & eacute;bec, Canada. The MIC is spatially and temporally associated with numerous gold-rich volcanogenic massive sulfide (VMS), epizonal intrusion-related Au +/- Cu, and shear zone-hosted orogenic gold and/or remobilized VMS deposits. The igneous units are grouped into two distinct stages, the tholeiitic to transitional Mouska stage and the transitional to calc-alkaline Doyon stage. Using a combination of petrography, high-precision zircon U-Pb geochronology, accessory mineral thermometry, and zircon trace element compositions from the different phases comprising the MIC, this study provides new constraints on the pressure-temperature-time and compositional evolution of this magmatic system. The results demonstrate that individual phases crystallized over a relatively short time scale and likely in distinct magmas gestating (in chambers or during transcrustal migration) at deep levels within the crust (similar to 700-800 degrees C; similar to 0.5-0.9 GPa, 15-30 km), at slightly cooler and shallower conditions than expected tonalite-trondhjemite-granodiorite (TTG) magma generation. The entire intrusive complex formed over a maximum period of similar to 1.44 Ma, with the formation of the Mouska and Doyon stages overlapping within a similar to 1 Ma window. This indicates a rapid change in tectonic setting from a relatively mature back-arc rift- to arc-dominated environment, early in the magmatic evolution of the MIC magmas. Based on distinct zircon trace element ratios and ranges associated with individual MIC lithologies multiple, broadly coeval magma chambers were required at depth. Processes documented at the level of near-seafloor emplacement in this geological setting do not fully capture the duration and compositional complexity of deep crustal magmatic processes that can be directly involved in the magmatic contributions of metals to Au-rich VMS and intrusion-related deposit styles in the Doyon-Bousquet-LaRonde mining camp and other similar environments in Archean terranes.
Coastal wetlands play a crucial role because of their wide range of ecosystem services, including coastal protection, carbon sequestration and biodiversity support. However, these environments are increasingly threatened by land reclamation, sea-level rise and sediment supply reductions, leading to widespread degradation. Managed realignment has emerged as a nature-based solution, allowing tidal processes to restore coastal wetland function. While extensively studied in natural settings, the evolution of restored intertidal flats remains poorly understood. This study examines sediment deposition, vertical accretion and morphological evolution in three human-induced intertidal flats across different tidal environments: Barbamarco Lagoon (microtidal, Italy), Perkpolder (macrotidal, The Netherlands) and Converse (hypertidal, Canada). The analyses followed the same procedure in all environments and were achieved through the use of sediment traps and digital elevation models, integrated with river and tidal records. Results indicate that during the early years of development, managed realignment sites experience rapid accretion in unusual locations of the intertidal flats (e.g. inside channels) and high erosion of artificial structures (e.g. creeks, inlets). This morphological instability influences sediment redistribution and intertidal flat evolution, potentially leading to self-cannibalisation, where erosion of the artificial structures feed the system itself. These findings highlight the importance of long-term monitoring to assess the sustainability of restored intertidal flats and improve predictions of their development. Future research should focus on how coastal wetland design influences long-term evolution and how sediment supply, tidal range and human interventions shape their resilience in the face of climate change.
The Meguma Terrane of the Northern Appalachians is primarily composed of Cambro-Ordovician metapelites and metapsammites that were intruded by Late Devonian (380-360 Ma) granitic plutons. The Port Mouton Pluton (373 +/- 1 Ma) is composed of tonalite and monzogranite, contains silicic microgranular enclaves and is cross-cut by lamprophyric dykes. The silicic enclaves are peraluminous, magnesian and calc-alkalic to calcic. The enclaves can be divided into two groups. The Group 1 enclaves are temporally, compositionally and isotopically (epsilon(373 )= -1.2 to +1.5) similar to the host Port Mouton Pluton (PMP). The Group 2 enclaves are Si-rich (SiO2 = 74.3-79.7 wt%) and Al-poor (Al2O3 = 10.0-12.2 wt%). The youngest zircons are of Early Cambrian age (529 +/- 6 Ma) and the rocks are isotopically different (epsilon(530 )= -6.7 to -6.4). MELTS modelling (P = 3 kbar; & fnof;O-2 = NNO = +1; H2O = 2.00 wt%) shows that fractional crystallization can generate the range of PMP rock compositions. The parental magma of the PMP was probably derived by partial melting of sub-Meguma Terrane rocks in a lower crustal hot zone over a 20-30 myr time period. The Group 2 enclaves are xenoliths derived by melting of metasedimentary upper crustal rocks of Avalonia.
Purpose-Relying on the unique questions of the Canadian General Social Survey, the present paper assesses how education associates with the value placed on workplace diversity. Design/methodology/approach-We use multivariate regressions with a rich set of controls, as well as estimations correcting for sample selection and the endogeneity of education using an instrumental variable. Findings-We find that education is positively associated with the outcome for both men and women. However, when education is instrumented using the changes in compulsory schooling laws, the estimations result in null findings. Originality/value-This is the first paper examining the causal effects of education on the appreciation of workplace diversity.
Wearable health technologies (WHTs) increasingly enable continuous, consumer-driven health monitoring, yet healthcare systems remain organized around episodic, reactive care. This research examines how this misalignment shapes consumer well-being by integrating consumer and physician perspectives on wearable-generated data. Study 1 draws on interviews with wearable users and Study 2 involves practicing physicians. Across the two studies, the authors identify four consumer tensions and four parallel physician tensions that emerge in response to continuous health data within episodic care systems. Together, these findings reveal a guidance infrastructure gap, a term coined to describe the absence of interpretive, relational, and system-level support needed to make continuous data meaningful. The findings show that WHTs influence consumer well-being not through data access alone, but through the presence or absence of guidance infrastructure that shapes how consumers and providers interpret, navigate, and act on continuous health data.
