What is cleavage and fracture?
Regional SpecificsCleavage is the property of a mineral that allows it to break smoothly along specific internal planes (called cleavage planes) when the mineral is struck sharply with a hammer. Fracture is the property of a mineral breaking in a more or less random pattern with no smooth planar surfaces. How do you identify cleavage and
What are some fun facts about the Canadian Shield?
Regional SpecificsThis article is a plain language summary of the Canadian Shield. If you would like to learn more, please see our full article. The Canadian Shield is a gigantic rock formation. Canadian Shield is one of the oldest on Earth, with areas dating from 2.5 to 4.2 billion years. It is part of the rock or
What is the lowest base level for any stream?
Regional Specificssea levelbase level the ultimate base level would be considered the ocean or a lake that a stream drains in to. What is the lowest base level possible for a stream? The lowest base level possible for any stream is sea level, the point at which the stream enters the ocean. 10. As stream channels
Can you determine the age of something like a fossil by examining its half life?
Regional SpecificsAlso called absolute dating, scientists use the decay of radioactive elements within the fossils or the rocks around the fossils to determine the age of the organism that was preserved. This technique relies on the property of half-life. How is half-life used to determine age? To determine the absolute age of this mineral sample, we
What can you do at Cave of the Mounds?
Regional SpecificsIs Cave of the Mounds worth it? Very nice, worthwhile visit for the entire family! We spent around 3 hours there, in the cave, gift shop and had a little pic-nic on the grounds afterward. How long does it take to go through the Cave of the Mounds? about 45 minutes to an hour It
What type of sedimentary rock forms when sediments stick together?
Regional SpecificsclaysClastic (detrital) sedimentary rocks are composed of the solid products of weathering (gravel, sand, silt, and clay) cemented together by the dissolved weathering products.… solid materials 1) clays dissolved materials 3) soluble silica 4) metal cations What rock type forms when sediments stick together? 14) sedimentary rock forms when sediments are compacted and cemented together,