Results 51 to 60 of about 5,023 (118)

Genesis and petrology of Late Neoproterozoic pegmatites and aplites associated with the Taba metamorphic complex in southern Sinai, Egypt

Geologica Acta, 2016
We present new field, petrographical, mineralogical and geochemical data from late Neoproterozoic pegmatites and aplites in southern Sinai, Egypt, at the northernmost limit of the Arabian-Nubian Shield.
K.M. ABDELFADIL, P.D. ASIMOW, M.K. AZER, H.A. GAHLAN   +3 more
doaj  

Study on the Lithium Anomaly Zone within Sulatsay Area, Uzbekistan [PDF]

Geo Data
The Sulatsay rare metal field formed through pegmatite generation associated with fertile granitic magmatism, with lithium mineralization occurring in lithium-cesiumtantalum (LCT)-type pegmatites at contacts with syenite.
Xoliyorov Anvar Tursinovich, Ilhwan Oh, Chulho Heo, Bumhan Lee   +3 more
doaj   +1 more source

Ediacaran–Cambrian High‐Strain Melt‐Present Deformation of the Archean Charcot Province, East Antarctica

Tectonics, Volume 45, Issue 8, August 2026.
Abstract The assembly of Gondwana involved several Pan‐African orogens, although their extension into ice‐covered Antarctica remains contentious. Particularly problematic is our understanding of the Kuunga orogenic system in East Antarctica, including its eroded architecture and temporal evolution. The remote Charcot Province, at the easternmost extent
Jacqueline A. Halpin, Nathan R. Daczko, Jacob A. Mulder, Alessandro Maritati, Tobias Stål   +4 more
wiley   +1 more source

Subduction Initiation and Early Subduction Zone Development: Insights From the P–T–t Path of the Bay of Islands Metamorphic Sole

Journal of Metamorphic Geology, Volume 44, Issue 7, Page 510-536, August 2026.
ABSTRACT The processes involved during subduction initiation (SI) remain poorly constrained, in part due to the rarity of geological archives. Ophiolites and their underlying metamorphic soles are thought to form during subduction zone infancy and may thus provide critical constraints. Metamorphic soles are derived from oceanic crust of the lower plate
François Fournier‐Roy, Carl Guilmette, Mark Coleman, Kyle Larson, Douglas K. Tinkham, Alana M. Hinchey, John Wakabayashi, Jean H. Bédard, Louise Mérit, Philippe Agard, Loïc Labrousse, Antoine Godet   +11 more
wiley   +1 more source

Geological setting, geochemistry and mineralogy of lithium bearing pegmatites in South Western Mali, West Africa; a review

Geology, Ecology, and Landscapes
The Bougouni region in southwestern Mali hosts lithium-bearing pegmatites within the Paleoproterozoic Birimian greenstone belt. These pegmatites are classified into lithium-poor and lithium-rich types.
Elhadji Mory Traore, Akinade S. Olatunji, Mory Sidibe, Sory I. M Konate, N’Tcha Daniel Kouagou N’dah, George Lemewihbwen Ngiamte   +5 more
doaj   +1 more source

Thermodynamic Modeling of Lithium Enrichment During Partial Melting: The Importance of Partition Coefficients

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Predicting the partial melting conditions that generate Li‐rich peraluminous melts is of major economic and societal importance. However, existing models disagree on the optimal conditions (e.g., pressure, temperature, protolith) and, consequently, on targets for exploration.
Nicolas Riel, Owen M. Weller, Caroline R. Soderman, Elisa O. Costa, Matthew C. Morris, Evangelos Moulas, Boris J. P. Kaus   +6 more
wiley   +1 more source

Zircons from a Pegmatite Cutting Eclogite (Gridino, Belomorian Mobile Belt): U-Pb-O and Trace Element Constraints on Eclogite Metamorphism and Fluid Activity

Geosciences, 2020
This report presents new data on U-Pb geochronology, oxygen isotopes, and trace element composition of zircon from a pegmatite vein crosscutting an eclogite boudin on Stolbikha Island, Gridino area, Belomorian mobile belt (BMB).
Sergey G. Skublov, Aleksey V. Berezin, Xian-Hua Li, Qiu-Li Li, Laysan I. Salimgaraeva, Veniamin V. Travin, Dmitriy I. Rezvukhin   +6 more
doaj   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, Volume 44, Issue 6, Page 440-469, July 2026.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

A geophysical investigation of the Roter Kamm impact crater, Namibia

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1386-1398, July 2026.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus, Pritam Yogeshwar, Wiebke Mörbe, Bülent Tezkan, Yajun Liu, Bufelo Lushetile, Martin Melles   +6 more
wiley   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1213-1242, July 2026.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source