Results 51 to 60 of about 9,445 (214)

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

Sedimentology and geochemistry of the recent sediments of the river system on Hurd Peninsula, Livingston Island, Antarctica

The Depositional Record, Volume 12, Issue 4, September 2026.
This study investigates the sedimentology and geochemistry of recent sediments from ephemeral river systems on Hurd Peninsula, Livingston Island, Antarctica. These systems are important for understanding sedimentary and geochemical processes in unique polar environments.
Yakup Çelik, Merve Özyurt, Raif Kandemir   +2 more
wiley   +1 more source

MINERAL CHEMISTRY OF OPHIOLITIC GABBROS WITHIN CENTRAL ANATOLIA: HIRFANLI DAM GABBROS

SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2019
The tectonic evolution of the magmatic rocks the Central Anatolia (CA) began at the late Mesozoic with closure of Neotethys in the region. The Central Anatolia has experienced several magmatic events including felsic and mafic intrusions originated from collisional and/or extensional tectonic events. The felsic magmatism of the CA are well reported and
Koralay, Tamer, Kadıoğlu, Yusuf Ka?an, Deniz, Kıymet, Güllü, Bahattin   +3 more
openaire   +2 more sources

Cryptic Superfine Placer Gold Populations, Round Hill Mine, Southern New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Superfine (50–<1 µm) detrital gold and platinum group mineral (PGM) particles at the Round Hill mine near Foveaux Strait were locally derived (<20 km) from as‐yet undefined basement sources. This superfine component contrasts with the dominant coarser (typically >100 µm) gold and PGM particles at the mine that have been transported for >100 km in ...
Marshall Palmer, Dave Craw
wiley   +1 more source

Formation of clay minerals and exhumation of lower‐crustal rocks at Atlantis Massif, Mid‐Atlantic Ridge

Geochemistry, Geophysics, Geosystems, 2008
Low‐temperature alteration products in gabbros from the ocean floor have significant implications for incipient processes of seawater‐rock interaction and exhumation tectonics of the lower‐crustal rocks.
Toshio Nozaka, Patricia Fryer, Muriel Andreani   +2 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

Geophysical Investigation of a Thermal Field in Abu Dhabi, United Arab Emirates

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract In the Abu Dhabi Emirate, near Madinat Zayed and Liwa, studies have identified high geothermal gradients and high‐heat‐flow areas. Assessing the geothermal potential in this region requires a detailed mapping of subsurface geological formations and their thermal properties.
Hakim Saibi, Mohammed Y. Ali, Ahmed Abdelmaksoud, Biruk Abera Cherkose   +3 more
wiley   +1 more source

The Pobei Cu-Ni and Fe ore deposits in NW China are comagmatic evolution products: evidence from ore microscopy, zircon U-Pb chronology and geochemistry

Geologica Acta, 2017
The Pobei mafic-ultramafic complex in northwestern China comprises magmatic Cu-Ni sulfide ore deposits coexisting with Fe-Ti oxide deposits. The Poshi, Poyi, and Podong ultramafic intrusions host the Cu-Ni ore. The ultramafic intrusions experienced four
Y.G. LIU, W.Y. LI, X.B. LÜ, Y.H. HUO, B. ZHANG   +4 more
doaj  

U–Pb geochronology and Hf isotope data from the Late Cretaceous Mawat ophiolite, NE Iraq

Heliyon, 2019
The Mawat ophiolite, NE Iraq, is one of the Neo-Tethyan ophiolites within the Iraqi Zagros orogen. It consists of many metre-to kilometre-sized tectonic slices of serpentinized dunite, peridotite, gabbro, basaltic rocks and associated oceanic ...
Heider Al Humadi, Markku Väisänen, Sabah A. Ismail, Jaakko Kara, Hugh O'Brien, Yann Lahaye, Marja Lehtonen   +6 more
doaj   +1 more source

Deep Crustal Magma‐Water Interaction During Oceanic Core Complex Termination of the Godzilla Megamullion in the Parece Vela Basin

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Oceanic Core Complexes (OCCs) in back‐arc basins are not as thoroughly investigated, and their termination processes remain poorly understood. The Godzilla Megamullion is the largest known ceased OCC on Earth, yet magmatic and hydrothermal records from its termination are lacking.
Han‐Tao Chi, Guo‐Liang Zhang, Ji Zhang, Chang‐Ming Lu   +3 more
wiley   +1 more source