Results 21 to 30 of about 465,436 (305)
Mercury spikes suggest volcanic driver of the Ordovician-Silurian mass extinction
Scientific Reports, 2017 The second largest Phanerozoic mass extinction occurred at the Ordovician-Silurian (O-S) boundary. However, unlike the other major mass extinction events, the driver for the O-S extinction remains uncertain.
Qing Gong +8 more
doaj +1 more source
A new clinopyroxene thermobarometer for mafic to intermediate magmatic systems [PDF]
European Journal of Mineralogy, 2021 Clinopyroxene-only thermobarometry is one of the most practical tools to reconstruct crystallization pressures and temperatures of clinopyroxenes. Because it does not require any information of coexisting silicate melt or other co-crystallized mineral ...
X. Wang +8 more
doaj +1 more source
Nickel isotopic evidence for late-stage accretion of Mercury-like differentiated planetary embryos
Nature Communications, 2021 Based on Nickel isotope analysis of meteorites and terrestrial rocks, the authors suggest that the Bulk Silicate Earth has a sub-chondritic Nickel isotope composition.
Shui-Jiong Wang +11 more
doaj +1 more source
Solid Earth Sciences, 2022 A new procedure has been developed for high precision and high accuracy Mg isotope analysis on multiple-collector inductively coupled plasma mass spectrometry using a critical mixture double spike technique.
Yongsheng He +6 more
doaj +1 more source
Yankuang ceshi, 2023 BACKGROUNDCritical metal elements are a group of metal elements including rare metal elements (e.g., Li, Be, Rb, Cs, Nb, Ta, Zr, Hf, W), rare earth elements (REEs), rare disperse elements (e.g., Ga, Ge, Se, Cd, In, Te, Re, Tl) and rare precious elements (
Tao HE +7 more
doaj +1 more source
Genetic Classification of ore-forming processes [PDF]
, 2016 The absence of a genetic classification of ore-forming processes is the result of a rather slow-paced accumulation of knowledge in ore-forming processes, which, in its turn, could be explained by objective conditions such as the fact that during the last
Abramova, Raisa Nikolaevna +2 more
core +1 more source
, 2023 Geological factors mean the movement of the magma mass separated from the inner spheres of the earth in the lithospheric layers.
openaire +1 more source
Boreas, 1988 There has long been a need for a book that assembles the diverse information about the processes by which glaciers deposit sediments and create and modify landforms. Drewry has succeeded in compiling much of this material in a very accessible format in Glacial Geologic Processes.
openaire +2 more sources
Genesis of Hawaiian lavas by crystallization of picritic magma in the deep mantle
Nature Communications, 2023 Here the authors demonstrate that Hawaiian lavas are formed by partial melting of mantle peridotite with subsequent fractionation of clinopyroxene and garnet in the deep magma chamber (90 km) and reequilibration with harzburgite at a shallower depth (
Junlong Yang +3 more
doaj +1 more source
Lithological Mapping Based on Fully Convolutional Network and Multi-Source Geological Data
Remote Sensing, 2021 Deep learning algorithms have found numerous applications in the field of geological mapping to assist in mineral exploration and benefit from capabilities such as high-dimensional feature learning and processing through multi-layer networks.
Ziye Wang, Renguang Zuo, Hao Liu
doaj +1 more source