What is the difference between law of superposition and radioactive dating?
GeologyRelative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating. What is the
What is the definition of absolute age?
Geology1. n. [Geology] The measurement of age in years. The determination of the absolute age of rocks, minerals, and fossils, in years before the present, is the basis for the field of geochronology. What is the definition of relative age? 1. n. [Geology] The approximate age determination of rocks, fossils or minerals made by comparing
What is Coprolite used for?
GeologyThey are trace fossils, meaning not of the animal’s actual body. A coprolite like this can give scientists clues about an animal’s diet. By looking at the shape and size of coprolites, as well as where they were found, scientists can work out what kind of animal the droppings might have come from. What is
What melts to form rhyolitic magma?
GeologyWhere is rhyolitic magma produced? Rhyolite usually forms in continental or continent-margin volcanic eruptions where granitic magma reaches the surface. Rhyolite is rarely produced at oceanic eruptions. What melts create magma? Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma is produced by melting of the mantle or the crust in
Where do you find stromatolites?
GeologyStromatolites, also known as layered rocks, form in shallow waters when biofilms of living microorganisms, like cyanobacteria, trap sediment. Most stromatolites grow in extremely salty lagoons or bays, in places like Australia, Brazil, Mexico and the Bahamas. What are stromatolites and where do they grow? Stromatolites are layered mounds, columns, and sheet-like sedimentary rocks. They
Where do earthquakes occur on a convergent plate boundary?
GeologyAbout 80% of earthquakes occur where plates are pushed together, called convergent boundaries. Another form of convergent boundary is a collision where two continental plates meet head-on. Since neither plate is stronger than the other, they crumple and are pushed up. Where do earthquakes occur on convergent boundaries? Subduction Zones. Along convergent plate margins with
Why is it called regional metamorphism?
GeologyRegional Metamorphism. Regional metamorphism is metamorphism that occurs over broad areas of the crust. Most regionally metamorphosed rocks occur in areas that have undergone deformation during an orogenic event resulting in mountain belts that have since been eroded to expose the metamorphic rocks. How do you identify regional metamorphism? Regional metamorphism occurs when rocks are
How soil is formed short answer?
GeologySoil is formed by a process called weathering. The process of weathering occurs as a result of the action of wind, water, or climatic changes. Weathering is the process that breaks down large rocks into smaller pieces. These small pieces of rocks form soil by mixing with decaying plants and animal parts. How soil are
Is radiometric dating the same as radiocarbon dating?
GeologyIs radiometric dating and radiocarbon dating the same thing? Additional methods of radiometric dating, such as potassium-argon dating and rubidium-strontium dating, exist based on the decay of those isotopes. Radiocarbon dating is a method used to determine the age of organic material by measuring the radioactivity of its carbon content. Is radiometric dating the same
How many times has Mount Teide erupted?
GeologyConfirmed historical accounts suggest Mount Teide has erupted at least six times in roughly the last 500 years: 1492, 1704, 1706, 1798 and 1909. When did Teide last erupt? November 1909 Teide Location Tenerife, Canary Islands, Spain Geology Mountain type Stratovolcano atop basalt shield volcano Last eruption November 1909 Will Mount Teide erupt again 2021?