Results 71 to 80 of about 22,040 (302)
Application of thermodynamic modelling to natural mantle xenoliths:examples of density variations and pressure–temperature evolution of the lithospheric mantle [PDF]
In this paper, we show how the results of phase equilibria calculations in different mantle compositions can be reconciled with the evidence from natural man- tle samples. We present data on the response of bulk rock density to pressure (P), temperature (
Klemme, Stephan, Ziberna, Luca
core +3 more sources
Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic peridotite xenoliths provide precious information on dynamics of the suboceanic lithosphere and ...
Norikatsu Akizawa +14 more
doaj +1 more source
ABSTRACT Elevated heat flow associated with mafic magmatism in accretionary orogens has often been proposed as a driving mechanism for (ultra)high‐temperature (UHT) metamorphism and anatexis. The Sancheong–Hadong complex, located in the southern Yeongnam Massif, Korea, consists of a ca.
Yuyoung Lee +3 more
wiley +1 more source
The Mesquita Sampaio beforsite is a mineral exploration area with apatite mineralization occurring near the northern portion of the Morro da Mina apatite deposit (Cajati Mine), in the Jacupiranga Alkaline Complex.
Saulo Batista de Oliveira +1 more
doaj +1 more source
Temperatures in a sinking xenolith [PDF]
The manuscript for this paper was not submitted.
openaire +2 more sources
Abstract The O‐, N‐, Mo‐, Ru‐, Os‐, Cr‐, Ti‐, Ni‐, Fe‐, Nd‐, Ca‐, Zn‐, Sr‐, and Mg‐isotopic compositions of enstatite chondrites are essentially identical to those of the Earth and Moon. These correspondences suggest enstatite chondrites formed at ≈1 AU as the only known chondrite groups that accreted in the vicinity of a major planet. Bulk Earth has a
Alan E. Rubin
wiley +1 more source
Abstract The Newer Volcanic Province (NVP) in southeastern Australia is a classic example of continental intraplate volcanism located far from a plate boundary, yet the configuration of its magma plumbing system remains unclear. Using three‐dimensional (3D) magnetotelluric (MT) inversion, we imaged a vertically continuous, trans‐lithospheric conductive
Xinpeng Ma +7 more
wiley +1 more source
The Buoyancy of Cratonic Lithospheric Mantle
Abstract Cratons are generally thought to be characterized by stable, long‐lived mantle roots. However, recent studies have suggested that the lithospheric mantle may be prone to removal, implying that it may be denser than the asthenosphere. To address these suggestions, we use a global data set of mantle xenoliths to estimate the density structure of
Z. J. Sudholz, A. Copley, K. Priestley
wiley +1 more source
We comprehensively compile and review N content in geologic materials to calculate a new N budget for Earth. Using analyses of rocks and minerals in conjunction with N-Ar geochemistry demonstrates that the Bulk Silicate Earth (BSE) contains \sim7\pm4 ...
Goldblatt, Colin, Johnson, Ben
core +1 more source
The potential of phosphorus in clinopyroxene as a geospeedometer: examples from mantle xenoliths [PDF]
We investigate the potential to use concentrations and zoning patterns of phosphorus (P) in clinopyroxene as indicators of the rates of igneous and metasomatic processes, comparable to recent applications of P in olivine but applicable to more evolved ...
Asimow, P. D. +6 more
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