Results 51 to 60 of about 24,905 (235)

Estimation of physicochemical properties and tectonic environment of gabbro masses from‏ ‏south of Germi city (Ardabil province)‎ based on the chemistry of clinopyroxene crystals [PDF]

پترولوژی, 2018
The studied gabbroic rocks, trending northwest- southeast, outcropped in the south of Germi, northwest of Iran. These rocks composed of plagioclase, clinopyroxene and iddingsitic olivines.
gholamreza ahmadzadeh, Mohammad Mobashergermi   +1 more
doaj   +1 more source

Correlation of magnetic susceptibility with 18O data in magnetite- and ilmenite-type granites from Iberian massif [PDF]

, 2012
The relationship between oxygen isotopic values and magnetic susceptibility composition on 11 Variscan Portuguese granites has been investigated. Whole-rock oxygen-isotope (18O ) values for Vieira do Minho (VM), Vila Pouca de Aguiar (VPA), Chaves ...
Lopes, José Carrilho, Machado, Joana, Martins, Helena, Noronha, Fernando, Sant'Ovaia, Helena   +4 more
core  

Depth of Cracking beneath Impact Craters: New Constraint for Impact Velocity [PDF]

, 2002
Both small-scale impact craters in the laboratory and less than 5 km in diameter bowl-shaped craters on the Earth are strength (of rock) controlled. In the strength regime, crater volumes are nearly proportional to impactor kinetic energy.
Ahrens, Thomas J., Coker, Demirkan, Xia, Kaiwen   +2 more
core   +1 more source

The petrology and genesis of the Paleoproterozoic mafic intrusion-hosted Co-Cu-Ni deposit at Hietakero, NW Finnish Lapland [PDF]

Bulletin of the Geological Society of Finland, 2018
Cobalt is a highly sought-after metal due to its economic importance in many hightech applications. It is mainly obtained from sedimentary-hosted Cu-Co deposits and magmatic Ni-Cu deposits as a by-product. We describe a recently discovered Co-enriched Cu-
Konnunaho, J.P., Hanski, E.J., Karinen, T.T., Lahaye, Y., Makkonen, H.V.   +4 more
doaj   +1 more source

Drilling to Gabbro in Intact Ocean Crust [PDF]

Science, 2006
Sampling an intact sequence of oceanic crust through lavas, dikes, and gabbros is necessary to advance the understanding of the formation and evolution of crust formed at mid-ocean ridges, but it has been an elusive goal of scientific ocean drilling for decades.
D. S. WILSON, D. A. H. TEAGLE, J. C. ALT, N. R. BANERJEE, S. UMINO, S. MIYASHITA, G. D. ACTON, R. ANMA, S. R. BARR, A. BELGHOUL, J. CARLUT, D. M. CHRISTIE, R. M. COGGON, K. M. COOPER, C. CORDIER, L. CRISPINI, S. RODRIGUEZ DURAND, F. EINAUDI, L. GALLI, Y. J. GAO, J. GELDMACHER, L. A. GILBERT, N. W. HAYMAN, E. HERRERO BERVERA, N. HIRANO, S. HOLTER, S. INGLE, S. J. JIANG, U. KALBERKAMP, M. KERNEKLIAN, J. KOEPKE, C. LAVERNE, H. L. L. VASQUEZ, J. MACLENNAN, S. MORGAN, N. NEO, H. J. NICHOLS, S. H. PARK, M. K. REICHOW, T. SAKUYAMA, T. SANO, R. SANDWELL, B. SCHEIBNER, C. E. SMITH DUQUE, S. A. SWIFT, P. TARTAROTTI, A. A. TIKKU, M. TOMINAGA, E. A. VELOSO, T. YAMASAKI, S. YAMAZAKI, C. ZIEGLER   +51 more
openaire   +3 more sources

Progressively Fenitised Schist and Carbonatitic Clasts From a Metasomatic Aureole Beneath the Alkalic Dunedin Volcano, Otago, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Clasts of albite‐porphyroblastic quartzofeldspathic schist, derived from the Otago Schist basement, occur within the Port Chalmers Breccia, a diatreme at the centre of the Dunedin stratovolcano, New Zealand. Schists have undergone varying degrees of replacement reactions (at temperatures of 300° to >500°C) producing hornfelses, with Ca‐ and K‐enriched ...
Alan F. Cooper
wiley   +1 more source

Agroforestry and enhanced rock weathering: A dual strategy for sustainable cacao

PLANTS, PEOPLE, PLANET, Volume 8, Issue 3, Page 843-860, May 2026.
Cacao production is both economically vital and environmentally intensive, presenting a major sustainability challenge as a crop largely cultivated by smallholder farmers in climate‐vulnerable regions. This review synthesises evidence that integrating agroforestry with enhanced rock weathering (EW) may significantly reduce emissions from cacao ...
Isabella L. Steeley, Edson S. França, Dimitar Z. Epihov, Noah J. Planavsky, David J. Beerling   +4 more
wiley   +1 more source

Timescales of carbon turnover in soils with mixed crystalline mineralogies

, 2017
Organic matter–mineral associations stabilize much of the carbon (C) stored globally in soils. Metastable short-range-order (SRO) minerals such as allophane and ferrihydrite provide one mechanism for long-term stabilization of organic matter in young ...
Bern, C., Chadwick, O., Khomo, L., Trumbore, S.   +3 more
core   +2 more sources

Constraints on the Timing and Lower Crustal Accretion at the Schulz Massif, Mohns Ridge, Arctic Mid Ocean Ridges

Geochemistry, Geophysics, Geosystems
The ultraslow‐spreading Mohns Ridge is a key supersegment of the Arctic Mid‐Ocean system, where it represents a boundary between the Jan Mayen hotspot in the south and the highly anomalous Knipovich Ridge to the north.
A. Bjerga, H. H. Stubseid, L. E. R. Pedersen, F. Corfu, M. Whitehouse, R. B. Pedersen   +5 more
doaj   +1 more source

Influence of Inherited Rifted Margin Architecture on Continental Collision Dynamics

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Continental collision is a key process in lithospheric evolution, driving mountain building, crustal thickening, and supercontinent assembly. Within the Wilson cycle, collision marks the final stage following rifting, ocean spreading, and subduction.
J. B. Ruh, P. Granado
wiley   +1 more source