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54 relations: Acid rain, Alberta, Amber, Argon, Asteroid, Atomic bombings of Hiroshima and Nagasaki, Berkeley Geochronology Center, Carbonaceous chondrite, Chicxulub crater, Chondrite, Chromium, Concentration, Core sample, Cretaceous–Paleogene boundary, Cretaceous–Paleogene extinction event, Detritus, Dinosaur, Earth, Extinction event, Fluid inclusions, Food chain, Frank Asaro, Frog, Geologist, Goldschmidt classification, Granite, Greenhouse effect, Gypsum, Helen Vaughn Michel, Impact event, Impact winter, Iridium, Isotope, Luis Walter Alvarez, Megatsunami, Meteorite, Mexico, Oxygen, Paleontology, Paul Renne, Peak ring (crater), Phobos (moon), Phytoplankton, Radioactive decay, San Francisco Chronicle, Science (journal), Shocked quartz, Sulfate, Tektite, Thermonuclear weapon, ..., TNT equivalent, Tsar Bomba, Walter Alvarez, Yucatán Peninsula. Expand index (4 more) »
Acid rain
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).
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Alberta
Alberta is a western province of Canada.
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Amber
Amber is fossilized tree resin, which has been appreciated for its color and natural beauty since Neolithic times.
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Argon
Argon is a chemical element with symbol Ar and atomic number 18.
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Asteroid
Asteroids are minor planets, especially those of the inner Solar System.
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Atomic bombings of Hiroshima and Nagasaki
During the final stage of World War II, the United States detonated two nuclear weapons over the Japanese cities of Hiroshima and Nagasaki on August 6 and 9, 1945, respectively.
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Berkeley Geochronology Center
The Berkeley Geochronology Center (BGC) is a non-profit geochronology research institute in Berkeley, California.
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Carbonaceous chondrite
Carbonaceous chondrites or C chondrites are a class of chondritic meteorites comprising at least 8 known groups and many ungrouped meteorites.
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Chicxulub crater
The Chicxulub crater is an impact crater buried underneath the Yucatán Peninsula in Mexico.
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Chondrite
Chondrites are stony (non-metallic) meteorites that have not been modified due to melting or differentiation of the parent body.
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Chromium
Chromium is a chemical element with symbol Cr and atomic number 24.
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Concentration
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture.
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Core sample
A core sample is a cylindrical section of (usually) a naturally occurring substance.
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Cretaceous–Paleogene boundary
The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K-T) boundary, is a geological signature, usually a thin band of rock.
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Cretaceous–Paleogene extinction event
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of some three-quarters of the plant and animal species on Earth, approximately 66 million years ago.
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Detritus
In biology, detritus is dead particulate organic material (as opposed to dissolved organic material).
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Dinosaur
Dinosaurs are a diverse group of reptiles of the clade Dinosauria.
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Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
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Extinction event
An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth.
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Fluid inclusions
Trapped in a time capsule the same size as the diameter of a human hair, the ore-forming liquid in this inclusion was so hot and contained so much dissolved solids that when it cooled, crystals of halite, sylvite, gypsum, and hematite formed. As the samples cooled, the fluid shrank more than the surrounding mineral, and created a vapor bubble. Source: USGS Fluid inclusions are microscopic bubbles of liquid and gas that are trapped within crystals.
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Food chain
A food chain is a linear network of links in a food web starting from producer organisms (such as grass or trees which use radiation from the Sun to make their food) and ending at apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), or decomposer species (such as fungi or bacteria).
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Frank Asaro
Frank Asaro (born Francesco Asaro, July 31, 1927 – June 10, 2014) was an Emeritus Senior Scientist at the Lawrence Berkeley National Laboratory associated with the University of California at Berkeley.
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Frog
A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (Ancient Greek ἀν-, without + οὐρά, tail).
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Geologist
A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes that shape it.
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Goldschmidt classification
The Goldschmidt classification, developed by Victor Goldschmidt (1888-1947), is a geochemical classification which groups the chemical elements within the Earth according to their preferred host phases into lithophile (rock-loving), siderophile (iron-loving), chalcophile (ore-loving or chalcogen-loving), and atmophile (gas-loving) or volatile (the element, or a compound in which it occurs, is liquid or gaseous at ambient surface conditions).
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Granite
Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.
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Greenhouse effect
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere.
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Gypsum
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.
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Helen Vaughn Michel
Helen Vaughn Michel (born 1932) is an American chemist best known for her efforts in fields including analytical chemistry and archaeological science, and specific processes such as neutron activation analysis and radiocarbon dating.
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Impact event
An impact event is a collision between astronomical objects causing measurable effects.
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Impact winter
An impact winter is a hypothesized period of prolonged cold weather due to the impact of a large asteroid or comet on the Earth's surface.
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Iridium
Iridium is a chemical element with symbol Ir and atomic number 77.
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Isotope
Isotopes are variants of a particular chemical element which differ in neutron number.
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Luis Walter Alvarez
Luis Walter Alvarez (June 13, 1911 – September 1, 1988) was an American experimental physicist, inventor, and professor who was awarded the Nobel Prize in Physics in 1968.
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Megatsunami
A megatsunami is a very large wave created by a large, sudden displacement of material into a body of water.
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Meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon.
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Mexico
Mexico (México; Mēxihco), officially called the United Mexican States (Estados Unidos Mexicanos) is a federal republic in the southern portion of North America.
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Oxygen
Oxygen is a chemical element with symbol O and atomic number 8.
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Paleontology
Paleontology or palaeontology is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene Epoch (roughly 11,700 years before present).
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Paul Renne
Paul R. Renne (born 1957, San Antonio, Texas) is the director of the Berkeley Geochronology Center and also Professor in Residence of geology in the Department of Earth & Planetary Science, University of California, Berkeley (UC Berkeley).
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Peak ring (crater)
A peak ring crater is a type of complex crater.
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Phobos (moon)
Phobos (systematic designation) is the innermost and larger of the two natural satellites of Mars, the other being Deimos.
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Phytoplankton
Phytoplankton are the autotrophic (self-feeding) components of the plankton community and a key part of oceans, seas and freshwater basin ecosystems.
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Radioactive decay
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
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San Francisco Chronicle
The San Francisco Chronicle is a newspaper serving primarily the San Francisco Bay Area of the U.S. state of California.
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Science (journal)
Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.
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Shocked quartz
Shocked quartz is a form of quartz that has a microscopic structure that is different from normal quartz.
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Sulfate
The sulfate or sulphate (see spelling differences) ion is a polyatomic anion with the empirical formula.
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Tektite
Tektites (from Greek τηκτός tēktós, "molten") are gravel-sized bodies composed of black, green, brown, or gray natural glass formed from terrestrial debris ejected during meteorite impacts.
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Thermonuclear weapon
A thermonuclear weapon is a second-generation nuclear weapon design using a secondary nuclear fusion stage consisting of implosion tamper, fusion fuel, and spark plug which is bombarded by the energy released by the detonation of a primary fission bomb within, compressing the fuel material (tritium, deuterium or lithium deuteride) and causing a fusion reaction.
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TNT equivalent
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.
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Tsar Bomba
Tsar Bomba was the Western nickname for the Soviet RDS-220 hydrogen bomb (code name Ivan or Vanya), the most powerful nuclear weapon ever created.
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Walter Alvarez
Walter Alvarez (born October 3, 1940) is a professor in the Earth and Planetary Science department at the University of California, Berkeley.
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Yucatán Peninsula
The Yucatán Peninsula (Península de Yucatán), in southeastern Mexico, separates the Caribbean Sea from the Gulf of Mexico, with the northern coastline on the Yucatán Channel.
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Redirects here:
Alvarez Catastrophe, Alvarez Hypothesis, Alvarez extinction hypothesis, Alvarez theory, Extraterrestrial catastrophe theory.
References
[1] https://en.wikipedia.org/wiki/Alvarez_hypothesis
