Results 51 to 60 of about 39,591 (263)

Gravimetric structure for the abyssal mantle massif of Saint Peter and Saint Paul peridotite ridge, Equatorial Atlantic Ocean, and its relation to active uplift

Anais da Academia Brasileira de Ciências, 2014
This paper presents gravimetric and morphologic analyses based on the satellite-derived data set of EGM2008 and TOPEX for the area of the oceanic mantle massif of the Saint Peter and Saint Paul peridotite ridge, Equatorial Atlantic Ocean.
KENJI F. MOTOKI, AKIHISA MOTOKI, SUSANNA E. SICHEL   +2 more
doaj   +1 more source

Lithological structure of western Pacific lithosphere reconstructed from mantle xenoliths in a petit-spot volcano

Progress in Earth and Planetary Science, 2022
The lithospheric mantle, formed at the mid-ocean ridge as a residue of crustal production, comprises theoretically depleted peridotite, but more fertile components (e.g., lherzolite and pyroxenite) have been reported, creating an enigmatic picture of the
Kazuto Mikuni, Naoto Hirano, Norikatsu Akizawa, Junji Yamamoto, Shiki Machida, Akihiro Tamura, Yuuki Hagiwara, Tomoaki Morishita   +7 more
doaj   +1 more source

Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: a review [PDF]

, 2005
Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Balaganskaya, E., Beard, Andy, Demaiffe, D., Downes, Hilary, Liferovich, R.   +4 more
core   +1 more source

Abundant Ancient Melt‐Depleted Peridotite Beneath the Marion Rise, Southwest Indian Ocean, Effects on Basalt Composition and Dynamic Topography

Geochemistry, Geophysics, Geosystems
The Marion Rise (MR) at the central Southwest Indian Ridge (SWIR) is an ultra‐slow spreading ridge with thin crust, shallow ridge depth, sparse basaltic coverage, and exposed peridotite.
Dominic Woelki, Vincent Salters, Andreas Stracke, Felix Genske, Gary White, Daniele Brunelli   +5 more
doaj   +1 more source

Machine Learning Reveals Source Compositions of Intraplate Basaltic Rocks

Geochemistry, Geophysics, Geosystems, 2021
Recycling of crustal material is thought to introduce pyroxenite to the peridotite mantle. Mapping such lithological heterogeneity within the mantle is crucial to understanding the mantle's chemical evolution but remains challenging.
Peng Guo, Ting Yang, Wen‐Liang Xu, Bin Chen   +3 more
doaj   +1 more source

Harry Hess and sea-floor spreading [PDF]

, 1999
Harry Hess's hypothesis of sea-floor spreading brought together his long-standing interests in island arcs, oceanic topography, and the oceanic crust. The one unique feature of Hess's hypothesis was the origin of the oceanic crust as a hydration rind on ...
Allwardt, Alan O.
core  

The response of borehole water levels in an ophiolitic, peridotite aquifer to atmospheric, solid Earth, and ocean tides

Journal of Hydrology X, 2023
Peridotite aquifers are ubiquitous on Earth, but most are in the deep-sea, and thus difficult to access. Ophiolites provide a unique opportunity to study peridotite aquifers, and the Oman Drilling Project established a Multi-Borehole Observatory in a ...
R.A. Sohn, J.M. Matter
doaj   +1 more source

Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics [PDF]

, 2006
Anorogenic intra-plate magmatism was widespread in Europe from early Tertiary to Recent times, extending west to east from Spain to Bulgaria, and south to north from Sicily to northern Germany. Magmatism is spatially and temporally associated with Alpine-
Downes, Hilary, Wilson, M.
core   +1 more source

The Role of Peridotite for Oceanic Volcanism

Geochemistry, Geophysics, Geosystems
The complementary products of oceanic crust formation are compositionally variable melt‐depleted peridotites. Together with the oceanic crust, the melt‐depleted peridotites are continuously recycled back into the mantle.
Andreas Stracke, Vincent J. M. Salters
doaj   +1 more source

Determination of Rare Earth Elements in Peridotite by Inductively Coupled Plasma-Mass Spectrometry after Alkali Fusion and Mg(OH)2 and Fe(OH)3 Coprecipitation

Yankuang ceshi, 2017
Characteristics of REEs in peridotite is significant for studying petrogenesis and magmatic processes. Due to the serious interference of matrix elements such as Mg and Fe, it is difficult to determine the low contents of REEs in peridotite (∑REEs=0.1-1 ...
LI Wei-liang, CHENG Xiu-hua, LI Zhong-yu, WANG Peng   +3 more
doaj   +1 more source