Results 31 to 40 of about 7,709 (174)
Transactions of the Philological Society, EarlyView.Abstract This paper investigates the role of semantic features of noun and adjective bases in determining the grammatical behaviour of Ancient Greek denominal and deadjectival verbs in *‐ye/o‐. The paper adopts a lexicalist framework (Rappaport Hovav & Levin 1998) and examines how the event schema, actionality, telicity and voice of derived verbs are ...
Carolina Marescotti
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Nitrogen isotopic composition of the MORB mantle: A reevaluation [PDF]
Geochemistry, Geophysics, Geosystems, 2004 Nitrogen in the mantle source of mid oceanic ridge basalts (MORBs) is commonly believed to have δ15N∼−5‰. This is based on a (selective) statistical average drawn from nitrogen isotopic data obtained simultaneously with argon from MORBs. However, on critical evaluation, using the accompanying 40Ar/36Ar data, we show this approach to be somewhat ...
Ratan K. Mohapatra, S. V. S. Murty
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Journal of Metamorphic Geology, EarlyView.ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva +7 more
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Frontiers in Earth Science, 2022 The abundance of mantle-derived rocks and lavas, in combination with its tectonic evolution, render Mexico a perfect laboratory to investigate the chemical and the isotopic heterogeneity of the lithospheric mantle.
Andres Sandoval-Velasquez +7 more
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Geochimica et Cosmochimica Acta, 1986 Abstract Data are presented for He, Ar and Xe in a number of MORB glasses and crystalline rocks. The rare gases in the latter group are characterized by atmospheric Ar and Xe, coupled with loss of trapped mantle He, Ar and Xe. The glass data also show clear signs of an atmospheric-like component for Ar and Xe. A reasonably constant world-wide average
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Progress in Earth and Planetary Science, 2021 This paper explores the evolutional process of back-arc basin (BAB) magma system at final spreading stage of extinct BAB, Shikoku Basin (Philippine Sea) and assesses its tectonic evolution using a newly discovered oceanic core complex, the Mado ...
Norikatsu Akizawa +15 more
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, 2023 This zip file contains data presented in the submission “Marine magnetic anomalies enhanced by internal stress in rapidly cooled submarine basalts” by Han et al., 2023. 1. Folder “MicroMag” contains two subfolders and a MATLAB script. (1) Subfolder "MicroMag_Models" contains the MERRILL scripts and Patran geometries to reproduce the results.
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Geochemistry, Geophysics, GeosystemsEnriched mid‐ocean ridge basalts (E‐MORB) commonly erupt at mid‐ocean ridges (MOR) and seamounts, but their relationship to “depleted” MORB (D‐MORB) and the processes controlling their magmatic evolution at MORs are not fully understood, hence raising ...
Max N. Jansen +4 more
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D" Reflection Polarities Inform Lowermost Mantle Mineralogy
Geochemistry, Geophysics, Geosystems, 2022 Polarities of seismic reflections at the discontinuity atop the D" region (PdP and SdS) indicate the sign of the velocity contrast across the D" reflector. Recent studies found PdP polarities matching and opposite those of P and PcP.
C. Thomas +2 more
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Architecture of ophiolitic mélanges in the Junggar region, NW China
Geosystems and Geoenvironment, 2023 Ophiolitic mélanges, units that contain components of an ophiolite suite, provide crucial information on earth history and orogenic evolution. In this paper, four ophiolitic mélanges are characterized, including the Baijiantan-Yeyagou, Hebukesair ...
Ji'en Zhang +6 more
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