Results 1 to 10 of about 2,650 (157)

The African upper mantle and its relationship to tectonics and surface geology [PDF]

open access: yesGeophysical Journal International, 2008
This paper focuses on the upper-mantle velocity structure of the African continent and its relationship to the surface geology. The distribution of seismographs and earthquakes providing seismograms for this study results in good fundamental and higher mode path coverage by a large number of relatively short propagation paths, allowing us to image the ...
Eric Debayle   +2 more
exaly   +5 more sources

Geology: Core and Mantle [PDF]

open access: yesNature, 1970
Our Geomagnetism Correspondent
exaly   +2 more sources

Crust-Mantle Interaction Controls the Formation of High-Mg Adakitic Rocks: Evidence from Early Cretaceous Intrusive Complexes in Luxi Terrane, North China Craton [PDF]

open access: yesLithosphere, 2023
High-Mg adakite rocks preserve crucial information about the crust-mantle interactions during the magma evolution. The Luxi Terrane, southeastern North China Craton, stores a set of Early Cretaceous high-Mg adakite rocks; nevertheless, their petrogenesis
Songyan Liu   +6 more
doaj   +1 more source

Multistage origin of dunite in the Purang ophiolite, southern Tibet, documented by composition, exsolution and Li isotope characteristics of constituent minerals [PDF]

open access: yesEuropean Journal of Mineralogy, 2020
The Purang ophiolite, which crops out over an area of about 650 km2 in the western Yarlung–Zangbo suture zone, consists chiefly of mantle peridotite, pyroxenite and gabbro.
F. Xiong   +6 more
doaj   +1 more source

Mapping of hydrothermal alterations related to gold mineralization within parts of the Malumfashi Schist Belt, North-Western Nigeria

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2021
Remote sensing methods are a vital alternative for regional exploration surveys. Many ore deposits (e.g., epithermal, porphyry-related, volcanogenic massive sulphides, etc.) have distinct distribution patterns of alteration zones that can be used for ...
Wanduku Tende Andongma   +5 more
doaj   +1 more source

A discovery of extremely REE-rich kimberlites: A possible new type of REE-deposit

open access: yesSolid Earth Sciences, 2021
Two newly discovered Mesozoic Group II kimberlites in the southeastern margin of North China Craton show extremely high ΣREE contents (ranging from 1046 to 1869 ppm), which also higher than the nearby Weishan carbonatite and other REE-bearing rocks in ...
Qi Hou   +5 more
doaj   +1 more source

First discovery of gold in kimberlite in Xuzhou, Northern Jiangsu Province

open access: yesSolid Earth Sciences, 2021
Several individual particle native golds were observed in two Mesozoic Group II kimberlites dikes in the southeastern margin of North China Craton (NCC).
Qi Hou   +5 more
doaj   +1 more source

Two new minerals, badengzhuite, TiP, and zhiqinite, TiSi2, from the Cr-11 chromitite orebody, Luobusa ophiolite, Tibet, China: is this evidence for super-reduced mantle-derived fluids? [PDF]

open access: yesEuropean Journal of Mineralogy, 2020
Titanium minerals enclosed in corundum separated from the Cr-11 orebody include native Ti, zamboite (FeTiSi2), osbornite (TiN)-khamrabaevite (TiC) solid solutions, and jingsuiite (TiB2), as well as the new minerals badengzhuite (TiP) and zhiqinite (TiSi2)
F. Xiong   +10 more
doaj   +1 more source

Home - About - Disclaimer - Privacy