Results 221 to 230 of about 6,694 (263)
Some of the next articles are maybe not open access.
2009
Quantitative thermobarometers require selection of a univariant reaction, consideration of dilutions in all phases and application to fully buffered systems. Empirical thermobarometers include AlIV in chlorite, Al in hornblende, Ti in biotite, phengite barometry and various clay and organic transformations.
openaire +1 more source
Quantitative thermobarometers require selection of a univariant reaction, consideration of dilutions in all phases and application to fully buffered systems. Empirical thermobarometers include AlIV in chlorite, Al in hornblende, Ti in biotite, phengite barometry and various clay and organic transformations.
openaire +1 more source
THERMOBAROMETRY OF XENOLITHS FROM DEEP-SEATED ROCKS
International Geology Review, 1993A system of two-pyroxene thermometry is proposed, based on the distribution coefficients of one and three components between coexisting orthopyroxenes and clinopyroxenes and the position of the orthopyroxene isotherm-isobars in the ternary system MgSiO3-CaSiO3-FeSiO3.
openaire +1 more source
High-precision relative thermobarometry: theory and a worked example
Journal of Metamorphic Geology, 2000A number of sources of uncertainty are involved in thermobarometric calculations, the most important of which are associated with analytical precision, activity–composition (a–x) relationships, and thermodynamic data. Statistical treatment of these uncertainties results in relatively large uncertainties on the calculated values of pressure and ...
null Worley, null Powell
exaly +2 more sources
, 2020
The factors that control the fertility (e.g. capacity to form an ore deposits) of a magmatic system are still a matter of debate, requiring more studies on the evolution of ore-related magmas. This study presents a detailed reconstruction of the magmatic
Bertrand Rottier +3 more
semanticscholar +1 more source
The factors that control the fertility (e.g. capacity to form an ore deposits) of a magmatic system are still a matter of debate, requiring more studies on the evolution of ore-related magmas. This study presents a detailed reconstruction of the magmatic
Bertrand Rottier +3 more
semanticscholar +1 more source
GEOTHERMS OF CONTINENTAL LITHOSPHERE BASED ON XENOLITH THERMOBAROMETRY
International Geology Review, 1993The thermobarometry of garnet lherzolite and pyroxenite xeno-liths from kimberlitic explosion pipes and volcanoes has been used to determine the geotherms, values of the surface heat flow, and the thickness of the lithosphere in regions of Archean orogeny (the Kaapvaal Craton, South Africa and Lesotho, and the Siberian Platform in the vicinity of the ...
openaire +1 more source
Journal of Metamorphic Geology, 2019
Mineral inclusions are ubiquitous in metamorphic rocks and elastic models for host‐inclusion pairs have become frequently used tools for investigating pressure–temperature (P–T) conditions of mineral entrapment.
Joseph P. Gonzalez +3 more
semanticscholar +1 more source
Mineral inclusions are ubiquitous in metamorphic rocks and elastic models for host‐inclusion pairs have become frequently used tools for investigating pressure–temperature (P–T) conditions of mineral entrapment.
Joseph P. Gonzalez +3 more
semanticscholar +1 more source
The Granulite Uncertainty Principle: Limitations on Thermobarometry in Granulites
The Journal of Geology, 1989There are three geothermometers based on reversed experimental data and applicable to granulites: the two-pyroxene, two-oxide, and garnet-clinopyroxene thermometers. All have apparent closure temperatures below those of the granulite facies. This casts significant doubt on the concept that "peak" temperatures are routinely obtained from ion-exchange ...
B. Ronald Frost, Thomas Chacko
openaire +1 more source
Frontiers of thermobarometry: GAIA, a novel Deep Learning-based tool for volcano plumbing systems
Earth and Planetary Science Letters, 2023Lorenzo Chicchi +3 more
semanticscholar +1 more source
, 2020
The Arizona-Sonora porphyry copper cluster is one of the most productive provinces of this type on Earth. There, upper-crustal deposits emplaced between Late Cretaceous and Early Eocene and subsequently exhumed and developed supergene enrichment profiles.
M. Noury, T. Calmus
semanticscholar +1 more source
The Arizona-Sonora porphyry copper cluster is one of the most productive provinces of this type on Earth. There, upper-crustal deposits emplaced between Late Cretaceous and Early Eocene and subsequently exhumed and developed supergene enrichment profiles.
M. Noury, T. Calmus
semanticscholar +1 more source
The current status of thermobarometry in metamorphic rocks
Geological Society, London, Special Publications, 1989SummaryInformation on pressure (P) and temperature (T) is a fundamental aspect of research on metamorphic terrains. Unfortunately, many workers employ thermobarometers that are not experimentally calibrated, are insensitive or too sensitive toP-Tchanges, depend on a priori assumptions of water pressure (such as most petrogenetic grids), or are rapidly ...
openaire +1 more source