Results 41 to 50 of about 776,982 (368)

Geochemistry and petrogenesis of volcanic rocks from Daimao Seamount (South China Sea) and their tectonic implications [PDF]

open access: yes, 2015
The South China Sea (SCS) experienced three episodes of seafloor spreading and left three fossil spreading centers presently located at 18°N, 17°N and 15.5°N.
Castillo, P   +5 more
core   +2 more sources

Reproducing past subduction and mantle flow using high-resolution global convection models

open access: yesEarth and Planetary Physics, 2018
Plate subduction drives both the internal convection and the surface geology of the solid Earth. Despite the rapid increase of computational power, it remains challenging for geodynamic models to reproduce the history of Earth-like subduction and ...
JiaShun Hu, LiJun Liu, Quan Zhou
doaj   +1 more source

Changing Sources of Magma Generation Beneath Intra-Oceanic Islands Arcs: An Insight From the Juvenile Kohistan Island Arc, Pakistan Himalaya [PDF]

open access: yes, 2006
The Kohistan arc, situated in the Pakistan Himalaya, is a Cretaceous intraoceanic island arc which was initiated during the northward movement of the Indian Plate. The arc was sutured to Asia at ca. 100 Ma.
Bignold, Stella   +2 more
core   +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  

New Theory of the Earth [PDF]

open access: yes, 2007
New Theory of the Earth is an interdisciplinary advanced textbook on all aspects of the interior of the Earth and its origin, composition, and evolution: geophysics, geochemistry, dynamics, convection, mineralogy, volcanism, energetics and thermal ...
Anderson, Don L.
core   +2 more sources

The Economic Geology of Scandium, the Runt of the Rare Earth Element Litter

open access: yesEconomic Geology, 2018
Scandium is currently in high demand because of a number of technological advances in the aerospace and automotive sectors of the global economy. In this paper, we review the properties of scandium, the geology of the major economic and potentially ...
A. Williams-Jones, O. Vasyukova
semanticscholar   +1 more source

Theoretical petrology [PDF]

open access: yes, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source

A seismic reference model for the crust and uppermost mantle beneath China from surface wave dispersion

open access: yes, 2016
Weisen Shen,1 Michael H. Ritzwoller,1 Dou Kang,2 YoungHee Kim,3 Fan-Chi Lin,4 Jieyuan Ning,2 Weitao Wang,5 Yong Zheng6 and Longquan Zhou7 1Department of Physics, University of Colorado at Boulder, Boulder, CO 80309, USA.
W. Shen   +8 more
semanticscholar   +1 more source

Experimental constraints on the damp peridotite solidus and oceanic mantle potential temperature

open access: yesScience, 2017
Turning up the mantle temperature The temperature at which Earth's mantle begins to melt is a long-standing question in geology. Sarafian et al. present a clever set of experiments to determine the impact of small amounts of water on the melting ...
E. Sarafian   +3 more
semanticscholar   +1 more source

The application of S isotopes and S/Se ratios in determining ore-forming processes of magmatic Ni–Cu–PGE sulfide deposits: a cautionary case study from the northern Bushveld Complex [PDF]

open access: yes, 2015
The application of S/Se ratios and S isotopes in the study of magmatic Ni–Cu–PGE sulfide deposits has long been used to trace the source of S and to constrain the role of crustal contamination in triggering sulfide saturation.
Boyce, Adrian J.   +3 more
core   +2 more sources

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