Results 31 to 40 of about 1,311,765 (395)

The capacity of hydrous fluids to transport and fractionate incompatible elements and metals within the Earth's mantle

Geochemistry, Geophysics, Geosystems, 2014
Both silicate melts and aqueous fluids are thought to play critical roles in the chemical differentiation of the Earth's crust and mantle. Yet their relative effects are poorly constrained. We have addressed this issue by measuring partition coefficients
John Adam, Marek Locmelis, Juan Carlos Afonso, Tracy Rushmer, Marco L. Fiorentini   +4 more
doaj   +1 more source

The early evolution of the earth, the beginning of its geological history: how and when the granitoid magmas appeared

Литосфера, 2018
The Earth has a number of differences from the planets of the Solar System and other star-planetary systems. These differences were acquired during its formation and geological history.
Mikhail I. Kuzmin, Vladimir V. Yarmolyuk, Alexander B. Kotov   +2 more
doaj   +1 more source

Earth’s Earliest Crust

Elements
The scarcity of rocks preserved from the first billion years (Gy) of Earth’s history hinders our ability to study the nature of the earliest crust. Rare >4.0-Gy-old zircons confirm that felsic crust was present within 500 million years of Earth’s formation.
O'Neil, Jonathan, Rizo, Hanika, Reimink, Jesse, Garçon, Marion, Carlson, Richard W.   +4 more
openaire   +1 more source

Discussion on Pretreatment Method for Extracting Rare Earth Elements from Weathered Crust Elution-deposited Rare Earth Ores

Yankuang ceshi, 2023
BACKGROUNDWeathered crust elution-deposited rare earth ores are the dominant mineral resources in China[1-5]. The occurrence of rare earth elements (REEs) in weathering crust elution-deposited is very complicated.
Yun ZHU, Lin GUO, Tingting YU, Ran LU, Lei ZHANG, Wenjun QU, Hongrui DING, Shengfeng MA   +7 more
doaj   +1 more source

Peridotite weathering is the missing ingredient of Earth’s continental crust composition

Nature Communications, 2018
The chemical composition of the continental crust cannot be adequately explained by current models for its formation, because it is too rich in Ni and Cr compared to that which can be generated by any of the proposed mechanisms.
A. Beinlich, H. Austrheim, V. Mavromatis, B. Grguric, C. Putnis, A. Putnis   +5 more
semanticscholar   +1 more source

Determination of spatial strains of the Earth crust using GPS measurements

Geodesy and Cartography, 2012
Spatial strains of the Earth crust were assessed using the finite elements method and an algorithm had been developed for a calculation of such strains. The experimental research had been carried out in the territory of the geodynamic ground of Ignalina ...
Algimantas Zakarevičius, Aurimas Stanionis   +1 more
doaj   +1 more source

Ti3+ in corundum traces crystal growth in a highly reduced magma

Scientific Reports, 2021
Aggregates of corundum crystals with skeletal to hopper morphology occur in pyroclastic rocks erupted from Cretaceous basaltic volcanoes on Mt Carmel, N. Israel.
Beñat Oliveira, William L. Griffin, Sarah E. M. Gain, Martin Saunders, Jeremy Shaw, Vered Toledo, Juan Carlos Afonso, Suzanne Y. O’Reilly   +7 more
doaj   +1 more source

High light REE enrichments in weathering crust in the Huangmeijian alkaline pluton in Luzong Volcanic Basin: A potential exploration target for ion-adsorption rare earth element deposit

Solid Earth Sciences, 2023
The high light rare earth elements contents (up to 412 ppm) in the weathering crust over the REE industrial grade were observed in the Huangmeijian alkaline pluton of the Luzong Volcanic Basin, firstly revealing the mineralization potential of ion ...
Xiaoning Kang, Zhuang Zhao, Xiaoyong Yang, Qiyao Liu   +3 more
doaj   +1 more source

Regional study of the Archean to Proterozoic crust at the Sudbury Neutrino Observatory (SNO+), Ontario: Predicting the geoneutrino flux

, 2014
The SNO+ detector, a new kiloton scale liquid scintillator detector capable of recording geoneutrino events, will define the strength of the Earth radiogenic heat.
Huang, Yu, Mantovani, Fabio, McDonough, William F., Rudnick, Roberta L., Shirey, Steven B., Strati, Virginia   +5 more
core   +1 more source

Seeking a geochemical identifier for authigenic carbonate

Nature Communications, 2016
Distinguishing between authigenic carbonate and primary marine carbonate is fundamental to our understanding of Earth’s carbon, oxygen and calcium cycles.
Ming-Yu Zhao, Yong-Fei Zheng, Yan-Yan Zhao   +2 more
doaj   +1 more source