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The geology of Ontario is the study of rock formations in the most populated province in Canada- it is home to some of the oldest rock on Earth. The geology in Ontario consists of ancient Precambrian igneous and metamorphic rock which sits under younger, sedimentary rocks and soils. Around 61% of Ontario is covered by the Canadian Shield. The ...
The following is a list of rock types recognized by geologists.There is no agreed number of specific types of rock. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type.
The Huronian Supergroup is a Proterozoic assemblage of geologic groups of the Superior Craton of the Canadian Shield in Ontario and Quebec.It extends from west of the city of Sault Ste. Marie in the west to the Ontario-Quebec border to the east and is part of the Southern Geologic Province.
The use of rock has had a huge impact on the cultural and technological development of the human race. Rock has been used by humans and other hominids for at least 2.5 million years. [22] Lithic technology marks some of the oldest and continuously used technologies. The mining of rock for its metal content has been one of the most important ...
Astrophysicists classify this as a fourth type of rock: Primitive rock. [1] Primitive rocks "have never been heated much, although some of their constituents may have been quite hot early in the history of our Solar System. Primitive rocks are common on the surfaces of many asteroids, and the majority of meteorites are primitive rocks." [1]: 145
The upper contact of the Kettle Point Formation is an erosional unconformity. Typically in southern Ontario, it is directly overlain by Pleistocene glacial tills and related deposits. In the central part of southern Ontario, the Carboniferous Bedford Formation of the Port Lambton Group unconformably rests upon Kettle Point Formation.
The Gunflint Chert is composed of biogenic stromatolites. [3] At the time of its discovery in the 1950s, it was the earliest form of life discovered and described in scientific literature, as well as the earliest evidence for photosynthesis. [4] The black layers in the sequence contain microfossils that are 1.9 to 2.3 billion years in age.
The Ontario Geological Survey (OGS) is an administrative Branch of the Ontario Ministry of Northern Development, Mines, Natural Resources and Forestry.It is responsible for documenting and communicating the Geology of Ontario, and manages the Abandoned Mines Information System (AMIS), the Ontario Assessment File Database (OAFD), the Ontario Drill Hole Database (ODHD), the Ontario Mineral ...
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