Article
Fossil Animals
The first animals were microscopic in size and left no known fossil remains. The oldest animal fossils occur in sediments deposited under shallow equatorial seas over 600 million years ago.
Enter your search term
Signing up enhances your TCE experience with the ability to save items to your personal reading list, and access the interactive map.
Create AccountArticle
The first animals were microscopic in size and left no known fossil remains. The oldest animal fossils occur in sediments deposited under shallow equatorial seas over 600 million years ago.
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
"Plant" refers to familiar land plants, and also to aquatic plants, mosses, liverworts and algae plants. Although not technically plants, fungi and bacteria are often included. Palaeobotany is the study of ancient plant life using fossil evidence. Plant fossils are found coast-to-coast in Canada, from 45-million-year-old mosses in British Columbia to fossil forests on Axel Heiberg and Ellesmere islands in the Canadian Arctic.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/17c83e96-a43b-4b20-82a8-016902d93bab.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/17c83e96-a43b-4b20-82a8-016902d93bab.jpg
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
For centuries people have argued about the age of the Earth; only recently has it been possible to come close to achieving reliable estimates.
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
Earth is 70.8% covered by water, but only with the development of sonar techniques has it become possible to describe the solid earth below the oceans. With increasingly sophisticated satellite observations, relatively fine structural details (eg, areas of volcanic activity) can be seen.
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
Geomatics Canada, along with the Geological Survey of Canada and the Polar Continental Shelf Project, became part of the Earth Sciences Sector of the Department of Natural Resources in the mid-1990s. It was formerly known as the Surveys, Mapping and Remote Sensing Sector.
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
Geomorphology is related to GEOLOGY because of the importance of long timescales, tectonic deformation of Earth's crust (seePLATE TECTONICS), and rock and sediment properties; and to physical geography through its association with CLIMATE, BIOGEOGRAPHY, SOIL SCIENCE, and HYDROLOGY.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/c495f574-0f22-4771-8a0e-1775d86b2843.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/c495f574-0f22-4771-8a0e-1775d86b2843.jpg
Article
Glaciation is the formation, movement and recession of glaciers. Glaciation was much more extensive in the past, when much of the world was covered in large, continental ice sheets. Currently, glaciers cover about 10 per cent of the world's land area (14.9 million km2).
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/cc15de4d-3449-4ba6-8e56-feea6be2179c.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/cc15de4d-3449-4ba6-8e56-feea6be2179c.jpg
Article
Thanks to the progress that had been made in identifying and mapping the Palaeozoic rocks (570-245 million years old) of western New York and northern New England, Logan was able to establish the broad correlations of the formations in the St Lawrence region.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/5b4dc762-0119-4203-8731-cef6366d724f.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/5b4dc762-0119-4203-8731-cef6366d724f.jpg
Article
Ice Age, the Pleistocene epoch of geologic time, during which periodic, extensive glacial activity occurred in many parts of the world.
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
The solar system contains many objects smaller than the planets (or their satellites) travelling in individual orbits about the SUN; space between the planets also contains myriad dust grains in the micron size range. Near Earth, dust concentrations are only a few hundred particles per cubic kilometre, but 35 000 to 100 000 t of extraterrestrial material enters the atmosphere annually, swept up by our planet from debris that is in its path or crosses its path.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/66e2415e-3179-44e5-a06b-e73edf3aa050.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/66e2415e-3179-44e5-a06b-e73edf3aa050.jpg
Macleans
Bridges, train trestles and elevated highways collapsed, sending hapless passengers plummeting to their deaths. Apartment buildings crumpled and fell, crushing terrified occupants still huddled in their beds.This article was originally published in Maclean's Magazine on January 30, 1995
"https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9" // resources/views/front/categories/view.blade.phphttps://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9
Article
British ColumbiaIn BC, most work has been carried out by the Underwater Archaeological Society of British Columbia (UASBC), a large, successful and mostly avocational group that was formed in 1975. The UASBC's has published seven regional shipwreck inventories.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/7ecaa63a-c7a6-4708-9151-98a099cb711d.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/7ecaa63a-c7a6-4708-9151-98a099cb711d.jpg
Article
ItalyThe UNIVERSITY OF ALBERTA has been active in southern Italy for several decades, in the ancient areas of Lucania and Apulia. This work started with the excavation of several indigenous pre-Roman sites, such as Botromagno, Monte Irsi and Roccagloriosa.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/1f654c4e-6170-4253-a1ea-24be097f0438.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/1f654c4e-6170-4253-a1ea-24be097f0438.jpg
Article
Metamorphic rock is one of the 3 major classes of rock comprising the Earth's crust, the others being SEDIMENTARY and IGNEOUS ROCKS. Metamorphic rock has been transformed, while in the solid state, by pressure, temperature and deformation.
"https://d3d0lqu00lnqvz.cloudfront.net/media/media/e0a546d9-bcaf-41e5-a7d4-076b178b5592.jpg" // resources/views/front/categories/view.blade.phphttps://d3d0lqu00lnqvz.cloudfront.net/media/media/e0a546d9-bcaf-41e5-a7d4-076b178b5592.jpg