Results 41 to 50 of about 1,492 (184)

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

On a Diamantiferous Peridotite, and the Genesis of the Diamond [PDF]

Scientific American, 1886
The discovery of diamonds at Kimberley, South Africa, has proved to be a matter, not only of commercial, but of much geological interest. The conditions under which diamonds here occur are unlike those of any other known locality, and are worthy of special attention.
openaire   +2 more sources

A Model for Melt‐Preferred Orientation and Permeabilities in Deformed Partially Molten Peridotites

Geochemistry, Geophysics, Geosystems
In a deforming partially molten rock, melt concentrates into a grain‐scale melt pocket aligned at a preferred orientation (melt‐preferred orientation, or MPO).
Boda Liu, Chao Qi, Ross N. Mitchell, Cin‐Ty A. Lee, Chuan‐Zhou Liu   +4 more
doaj   +1 more source

Electrical Conductivity During Controlled Deformation at Upper‐Mantle Conditions: First Experimental Achievements in a Griggs‐Type Apparatus

Geochemistry, Geophysics, Geosystems
Electrical conductivity measurements on well‐characterized materials in the laboratory allow accurate interpretations of high‐conductivity anomalies within the lithosphere and asthenosphere, both affected by substantial deformation over geological times.
Thomas P. Ferrand, Jacques Précigout, David Sifré, Johannes C. Vrijmoed, Timm John, Frédéric Savoie, Rémi Champallier, Fabrice Gaillard   +7 more
doaj   +1 more source

Coevolution of Deformation Microstructures and Crystal‐Fabrics in the Uppermost Mantle: Unraveling the Imprint of Multiple Processes in the Horoman Peridotite Complex, Japan

Geochemistry, Geophysics, Geosystems
Mantle peridotites exhibit complex microstructures due to the interaction of various deformation processes in the upper mantle. Thus, analysis of deformation microstructures can provide essential insights into the sequence of deformation events within ...
K. Matsuyama, K. Michibayashi
doaj   +1 more source

Assessing the Carbon Sequestration Potential of Ultramafic Rocks in the Kolaka Ophiolite Complex, Southheastern Sulawesi: A Petrographic, Geochemical, and Mineralogical Study

JGEET: Journal of Geoscience, Engineering, Environment and Technology
Climate change has prompted significant global interest in carbon sequestration technologies, particularly using geological formations. This study investigates the potential of ultramafic rocks from the Kolaka Ophiolite Complex in Southeast Sulawesi for ...
Syahrul, La Ode Dzakir, Riska, Rio Irhan Mais Cendra jaya, Masri   +4 more
doaj   +1 more source

Composition and Provenance of Victoria Group Sandstones in Southern North Victoria Land, Antarctica

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Three distinct source areas contributed to sandstones of the Victoria Group within the Transantarctic Basin in southern North Victoria Land. During the Permian, quartzose sandstones were derived from erosion of the local Ross Orogen, likely from an uplifted swell in the area of today's Ross Sea, the Ross High.
Martin Elsner, Robert Schöner, Reinhard Gaupp, Andreas Kronz, Benjamin Bomfleur, Joerg W. Schneider, Lothar G. Viereck   +6 more
wiley   +1 more source

Variable Upper Mantle Geochemical Processes Constrained From Independent Component Analysis of the Fizh Massif, Northern Oman Ophiolite

Geochemistry, Geophysics, Geosystems
We statistically analyzed the whole‐rock compositions of peridotites in the Oman ophiolite using a multivariate statistical technique called independent component analysis (ICA) to better understand the processes within the ophiolitic mantle section that
Yuto Miki, Eiichi Takazawa, Kenta Ueki, Tatsu Kuwatani   +3 more
doaj   +1 more source

High Melt Fraction Induced by the Dehydration Melting Near the 410‐km Discontinuity

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The water‐rich mantle transition zone, coupled with the low water storage capacity of the upper mantle, suggests that dehydration melting occurs just above the mantle transition zone near the 410‐km discontinuity. However, the melt fraction produced by the dehydration melting process remains poorly constrained.
Juan Chen, Hongyu Yu, Suyu Fu, Fang Xu, Baohua Zhang, Hongzhan Fei   +5 more
wiley   +1 more source

Tracing Continental Basalt Sources and Mantle Processes Using Fe Stable Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Iron (Fe) isotopes have emerged as powerful tracers of mantle source heterogeneity and melting processes, yet the mechanisms producing heavy Fe isotope signatures (high δ57Fe values) in intraplate basalts remain debated. Competing interpretations include partial melting of recycled pyroxenite domains versus carbonate‐induced oxidation of a ...
Yi‐Shan Cheng, Jian‐Qiang Liu, Li‐Hui Chen, Xun Yu, Gang Zeng, Xiao‐Jun Wang, Zhao‐Yang He, Jian Zhao, Frances M. Deegan, Valentin R. Troll, Hong‐Fu Zhang   +10 more
wiley   +1 more source