A review of information from Statistics Canada and the Council of Chairs of Canadian Earth Science Departments examined the geoscience workforce in Canada over the last two decades through economic cycles and environmental transitions. After a period of growth in Canada (2006 to 2011), geo scientist numbers in the labour market declined by 11% from 2011 to 2021, whereas the numbers of geological engineers grew by 56%. The combined total for both classifications remained fairly constant. By Census 2021 Canada had about 11,000 geoscientists (including oceanographers) and about 4,000 geological engineers. Professional, scientific and technical services, mining, quarrying and oil and gas extraction are the major employment sectors. Employment for geoscientists is cyclical and tied to economic and commodity-price cycles. Alberta experienced the largest decline in geoscientist numbers (-34.5%), correlated with reduced oil-and gas-development investments from 2014 to 2020. Growth in other provinces (e.g. British Columbia, Ontario) partly offset the decline in Alberta. Nearly 30% of geoscientists are immigrants, as defined by their countries of birth. The university education supply pipeline shows that enrolment in core geoscience and geological engineering undergraduate programs dropped significantly (50% decline from 2015 to 2022) with a corresponding drop in graduations. However, enrolments in Earth Science programs related to aspects beyond core geoscience and geological engineering (e.g. environmental science in its broadest sense) tripled between 2007 and 2022. If these trends continue, the majority of students will be enrolled in these associated programs rather than graduating with core geoscience knowledge and skills. There is a need for more comprehensive and up-to-date data to represent the characteristics of the geoscience workforce accurately and to inform policy decisions and individual career choices. The current situation implies that shortages of qualified geoscience professionals could develop in future years.
The job market for Canadian earth scientists is significantly driven by the country's strong resource industry. Enrolment in earth science degree programs is growing, but the demand from the job market is expected to outpace the projected supply from domestic programs. If the job market will indeed need as many workers as predicted, it will be necessary to change tactics for recruitment into Canadian university geosciences programs, to provide the market with the necessary workers.
An approximately 0.4 km diameter elliptical structure formed in Devonian granite in Southwestern Nova Scotia, herein named the Bloody Creek structure (BCS), is identified as a possible impact crater. Evidence for all impact origin is based oil integrated geomorphic, geophysical, and petrographic data. A near-continuous geomorphic rim and a 10 m deep crater that is infilled with lacustrine sediments and peat define the BCS. Ground penetrating radar shows that the crater has a depressed inner floor that is sharply ringed by a 1 m high buried scarp. Heterogeneous material under the floor, interpreted as deposits from collapse of the transient cavity wails, is overlain by stratified and faulted lacustrine and wetland sediments.Alteration features found only in Hill rocks Include common grain comminution, polymict lithic microbreccias, kink-banded feldspar and biotite, single and Multiple sets of closely spaced planar microstructures (PMs) in quartz and feldspar, and quartz mosaicism, rare reduced mineral birefringence, and chlorite showing plastic deformation and flow microtextures. Based on their form and crystallographic orientations, the quartz PMs consist of planar deformation features that document shock-metamorphic pressures <= 25 GPa.The age of the BCS is not determined. The low depth to diameter ratio of the crater, Coupled with anomalously high shock-metamorphic pressures recorded at its exposed rim, may be a result of significant post-impact erosion. Alternatively, impact onto glacier Ice during the waning stages of Wisconsinian deglaciation (about 12 ka BP) may have resulted in dissipation of much impact energy into the ice, resulting in the present morphology of the BCS.