[HTML][HTML] Secular change and the onset of plate tectonics on Earth
The Earth as a planetary system has experienced significant change since its formation c.
4.54 Gyr ago. Some of these changes have been gradual, such as secular cooling of the …
4.54 Gyr ago. Some of these changes have been gradual, such as secular cooling of the …
Activity–composition relations for the calculation of partial melting equilibria in metabasic rocks
A set of thermodynamic models is presented that, for the first time, allows partial melting
equilibria to be calculated for metabasic rocks. The models consist of new activity …
equilibria to be calculated for metabasic rocks. The models consist of new activity …
Jadeitites and plate tectonics
GE Harlow, T Tsujimori… - Annual Review of Earth …, 2015 - annualreviews.org
Jadeitite is a relatively rare, very tough rock composed predominantly of jadeite and typically
found associated with tectonic blocks of high-pressure/low-temperature metabasaltic rocks …
found associated with tectonic blocks of high-pressure/low-temperature metabasaltic rocks …
The effect of Mn on mineral stability in metapelites revisited: new a–x relations for manganese‐bearing minerals
The a–x relations recently presented in White et al.(, Journal of Metamorphic Geology, 32,
261–286) are extended to include MnO. This provides a set of internally consistent a–x …
261–286) are extended to include MnO. This provides a set of internally consistent a–x …
A metamorphic origin for Europa's ocean
M Melwani Daswani, SD Vance… - Geophysical …, 2021 - Wiley Online Library
Europa likely contains an iron‐rich metal core. For it to have formed, temperatures within
Europa reached 1250 K. Going up to that temperature, accreted chondritic minerals—for …
Europa reached 1250 K. Going up to that temperature, accreted chondritic minerals—for …
High‐grade metamorphism and partial melting of basic and intermediate rocks
Rocks of basic and intermediate bulk composition occur in orogenic terranes from all
geological time periods and are thought to represent significant petrological components of …
geological time periods and are thought to represent significant petrological components of …
On thermobarometry
R Powell, TJB Holland - Journal of Metamorphic Geology, 2008 - Wiley Online Library
Thermobarometry, the estimation of the pressure–temperature (P–T) conditions of
metamorphism, can be undertaken by using pseudosection calculations as well as by …
metamorphism, can be undertaken by using pseudosection calculations as well as by …
A new thermodynamic model for clino‐ and orthoamphiboles in the system Na2O–CaO–FeO–MgO–Al2O3–SiO2–H2O–O
A recent thermodynamic model for the Na–Ca clinoamphiboles in the system Na2O–CaO–
FeO–MgO–Al2O3–SiO2–H2O–O (NCFMASHO), is improved, and extended to include …
FeO–MgO–Al2O3–SiO2–H2O–O (NCFMASHO), is improved, and extended to include …
Revised activity–composition models for clinopyroxene and amphibole
JFA Diener, R Powell - Journal of Metamorphic Geology, 2012 - Wiley Online Library
Recent activity–composition models for clinopyroxene and amphibole are revised to provide
better consistency with observed phase relations in natural rocks. For clinopyroxene, the …
better consistency with observed phase relations in natural rocks. For clinopyroxene, the …
Early Eocene (c. 50 Ma) collision of the Indian and Asian continents: Constraints from the North Himalayan metamorphic rocks, southeastern Tibet
Despite several decades of investigations, the nature and timing of the India–Asia collision
remain debated. In the western Himalaya, the leading edge of the Indian continent was …
remain debated. In the western Himalaya, the leading edge of the Indian continent was …