Results 61 to 70 of about 28,093 (233)

Sourcing carnelian beads from the ancient Mesopotamian site of Kish, Iraq, 2450–2200 BCE: Stylistic, technological and geochemical approaches

Archaeometry, Volume 68, Issue S1, Page S22-S37, April 2026.
Abstract Trade between Mesopotamia and the Indus Civilization is studied through the analysis of Early Dynastic III Period (2600–2350 BCE) carnelian beads from the site of Kish, Iraq. Morphological and technological features of the beads are compared with beads from the Indus region.
J. Mark Kenoyer, Randall W. Law, Laure Dussubieux   +2 more
wiley   +1 more source

Shoshonitic enclaves in the high Sr/Y Nyemo pluton, southern Tibet: Implications for Oligocene magma mixing and the onset of extension of the southern Lhasa terrane [PDF]

, 2020
Post-collisional potassic and high Sr/Y magmatism in the Lhasa terrane provides critical constraints on the timing and mechanism of subduction of Indian lithosphere and its role in the uplift of the Tibetan Plateau.
Asimow, Paul D., Liu, Dong, Mo, Xuanxue, Sheikh, Lawangin, Wang, Qing, Wang, Zhenzhen, Zhang, Liangliang, Zhao, Zhidan, Zhu, Di-Cheng   +8 more
core  

Petrogenesis of diachronous mixed siliciclastic-carbonate megafacies in the cool-water Oligocene Tikorangi Formation, Taranaki Basin, New Zealand [PDF]

, 2003
The Oligocene (Whaingaroan-Waitakian) Tikorangi Formation is a totally subsurface, lithostratigraphically complex, mixed siliciclastic-limestone-rich sequence forming an important fracture reservoir within Taranaki Basin, New Zealand.
Berggren W. A., Bernecker T., Driscoll N. W., Hood S. D., Hudson D. S., Hume T. R., Mauri S., Morgans H. E. G., Mullins H. T., Mullins H. T., Naish T. R., Nelson C. S., Nelson C. S., Palmer J. A., Rao C. P., Scott G. H., Simpson J., Tucker M., Westphal H., Young J.   +19 more
core   +2 more sources

Two‐Stage Dolomite Formation in Carbonate Platforms Revealed by Carbonate Clumped Isotope Thermometry

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The “dolomite problem” refers to the scarcity of dolomite in Cenozoic marine environments compared with its abundance in earlier strata. This discrepancy has been attributed to changes in marine environments or to insufficient thermal maturity required for dolomite formation.
Y. Levenson, J. M. Eiler, E. Wurgaft, N. Neagu, Y. Ebert, U. Ryb   +5 more
wiley   +1 more source

Subduction Zone Magnetism: The Influence of Metamorphism and Serpentinization in the Mantle Wedge

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Subduction zone magnetic anomalies have previously been used to infer their thermal structure assuming a uniformly serpentinized mantle carries a homogeneous, isotropic magnetization. However, seismic tomography, geological observations and numerical modeling provide increasing evidence for a non‐uniformly serpentinized mantle wedge that may ...
Y. Li, P. C. Lindquist, D. Han, B. Fish, R. J. Harrison, W. McCarthy, R. M. Palin, C. B. Condit, C. I. O. Nichols   +8 more
wiley   +1 more source

The model of charnockite formation process in Thala hills, East Antarctica

Український антарктичний журнал, 2020
The research was performed in 2008-2009 within Belarus Government target program with the 54-th Russian Antarctic expedition. Geological mapping was carried out along with geochemical survey of Precambrian basement of Thala hills in western Enderby Land,
О.В. Miasnikov
doaj   +1 more source

Lunar meteorite regolith breccias: an in situ study of impact melt composition using LA-ICP-MS with implications for the composition of the lunar crust [PDF]

, 2010
Dar al Gani (DaG) 400, Meteorite Hills (MET) 01210, Pecora Escarpment (PCA) 02007, and MacAlpine Hills (MAC) 88104/88105 are lunar regolith breccia meteorites that provide sampling of the lunar surface from regions of the Moon that were not visited by ...
Anders, Antonenko, Arai, Arai, Arai, Arvidson, Basaltic Volcanism Study Project, Bland, Bukovanska, Bussey, Cahill, Campbell, Cohen, Cohen, Crawford, Crozaz, Day, Delano, Deutsch, Eugster, Fernandes, Floss, Goodrich, Goodrich, Haloda, Haskin, Hawke, Hawke, Head, Head, Hörz, Jolliff, Jolliff, Jolliff, Jolliff, Jolliff, Joy, Joy, Koeberl, Koeberl, Korotev, Korotev, Korotev, Korotev, Korotev, Korotev, Korotev, Korotev, Korotev, Lawrence, Lawrence, Levine, Lindstrom, Lindstrom, Liu, Longhi, Lucey, Lucey, Lucey, McKay, McKay, McKinley, Neal, Neal, Nishiizumi, Norman, Nyquist, Ohtake, Palme, Papike, Papike, Pearce, Pieters, Prettyman, Reimold, Rubin, Russell, Ryder, Ryder, Schnare, Shearer, Shearer, Sokol, Spudis, Spudis, Spudis, Stöffler, Swinyard, Takeda, Taylor, Taylor, Terada, Terada, Vaniman, Warren, Warren, Warren, Warren, Warren, Wasson, Wieczorek, Wieczorek, Zipfel, Zolensky   +103 more
core   +1 more source

Magma Paths of the Karthala and La Grille Volcanoes (Grande Comore) Revisited: New Evidence From Geomorphology and Geochemistry

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Grande Comore, the westernmost island within the Madagascar Comoros Volcanic (MCV) chain, hosts two juxtaposed basaltic volcanoes, Karthala and La Grille, with contrasting lava geochemical signatures and eruption frequencies. Their formation and dynamics have been explained either by a mantle plume or, more recently, as part of a ...
François J. P. Lötter, Nicolas Villeneuve, Andrea Di Muro, Nils Lenhardt, Laurent Michon, Pascale Besson, Hamid Soulé   +6 more
wiley   +1 more source

Rapid Slab Rollback Drives Early Cretaceous Back‐Arc Extension in NE China: Implication for Crustal Growth and Episodic Porphyry Mineralization

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract The subduction of the Paleo‐Pacific Plate beneath the NE Asian continental margin induced extensive magmatism, providing an excellent opportunity to investigate the interplay between plate dynamics, arc magmatism, continental crust formation, and porphyry mineralization.
Honghui Wang, Xinghua Ma, Simon A. Wilde, Yong Lai, Zhenhua Zhou, Jinyu Yan   +5 more
wiley   +1 more source

Mantle melting as a function of water content beneath back-arc basins [PDF]

, 2006
Subduction zone magmas are characterized by high concentrations of H_(2)O, presumably derived from the subducted plate and ultimately responsible for melting at this tectonic setting.
Grove, Timothy L., Hauri, Erik, Kelley, Katherine A., Newman, Sally, Plank, Terry, Stolper, Edward M.   +5 more
core   +1 more source