Geochimica et Cosmochimica Acta or GCA, established in 1950, is a semi-monthly, peer reviewed, scientific journal published by Elsevier. It is sponsored by the Geochemical Society and the Meteoritical Society. The post of Executive editor is currently vacant, following the retirement of Frank Podosek (Washington University, who served from 2000 to the end of 2011). This journal is published in English, French, and German. The publishing focus of Geochimica et Cosmochimica Acta is geochemistry, cosmochemistry, and meteoritics. The geochemistry focus encompasses both terrestrial and other planetary bodies. The interdisciplinary scope covers geology, chemistry, biochemistry, physics, astronomy, and other, specialized, professional disciplines. Topical coverage includes physical chemistry (e.g., gases, aqueous solutions, glasses, and crystalline solids), petrology (igneous and metamorphic), chemical processes (Earth's atmosphere, hydrosphere, biosphere, and lithosphere), geochemistry (organic and isotopic), meteoritics (includes meteorite impacts), and lunar science. Publishing formats include original research articles.
Double impact crater in Canada formed in two separate impacts
An asteroid smashing into a planet can dramatically alter the planet's habitability by setting back evolution or even encouraging biodiversity.
Ocean acidification could lead to collapse of coral reefs
An expedition from the Hebrew University of Jerusalem and the Carnegie Institute of Science has measured a roughly 40% reduction in the rate of calcium carbonate deposited in Australia's Great Barrier Reef ...
Coral growth rate plummets in 30-year comparison
A team of researchers working on a Carnegie expedition in Australia's Great Barrier Reef has documented that coral growth rates have plummeted 40% since the mid-1970s. The scientists suggest that ocean acidification ...
Modeling sulfur in the Archean atmosphere
A new study has revealed details about the composition of Earth's atmosphere during the Archean eon, which lasted from around 4 billion years ago to 2.4 billion years ago.
Nullarbor meteorite likely fragment of unknown asteroid
The first meteorite ever located solely using data from specially-placed cameras has been found to be geologically unique, presenting questions of its origins.
Iron-reducing bacteria could detoxify chromium
Hexavalent chromium is a major environmental contaminant at several Department of Energy (DOE) sites as well as other sites around the world. Iron-reducing bacteria can convert the oxidized form of iron in ...
Vitamin B3 might have been made in space, delivered to Earth by meteorites
Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis by NASA-funded researchers. The result supports a theory that the origin ...
Iron-bearing minerals in sediments naturally reduce contaminant levels
(Phys.org) —The release of wastes associated with nuclear reprocessing from storage facilities into the underlying sediments and groundwater is an important environmental concern. Scientists working with ...
An experiment recreates the crust of the moon Europa
Water, salts and gases dissolved in the huge ocean that scientists believe could exist below Europa´s icy crust can rise to the surface generating the enigmatic geological formations associated to red-tinged ...
Iron-bearing minerals in sediments react with and immobilize contaminants
The release of wastes associated with nuclear reprocessing from storage facilities into the underlying sediments and groundwater is an important environmental concern at the Hanford Site. This study provides ...
New formula for fast, abundant hydrogen production may help power fuel cells
Scientists in Lyon, a French city famed for its cuisine, have discovered a quick-cook recipe for copious volumes of hydrogen (H2).
Amber provides new insights into the evolution of the Earth's atmosphere
An international team of researchers led by Ralf Tappert, University of Innsbruck, reconstructed the composition of the Earth's atmosphere of the last 220 million years by analyzing modern and fossil plant ...
Potential solution to meteorite mystery: Chondrules may have formed from high-pressure collisions in early solar system
(Phys.org) —A normally staid University of Chicago scientist has stunned many of his colleagues with his radical solution to a 135-year-old mystery in cosmochemistry. "I'm a fairly sober guy. People didn't ...
Earthworms could help scientists 'dig' into past climates
A team of UK researchers believe earthworms could provide a window into past climates, allowing scientists to piece together the prevailing weather conditions thousands of years ago.
Magnetic rocks aid oil exploration
A new study has pinpointed the relationship between oil reservoirs and magnetic rocks, which could lead to more accurate oil exploration.