Results 91 to 99 of about 99 (99)

Formation of Mg‐silicates in the microbial sediments of a saline, mildly alkaline coastal lake (Lake Clifton, Australia): Environmental versus microbiological drivers

Sedimentology, EarlyView.
ABSTRACT Recent interest in Mg‐rich silicate formation stems from its role as a valuable palaeoclimatic indicator in fluvio‐lacustrine environments and its insights into metal geochemical cycling. Traditionally, Mg‐silicate genesis in lacustrine contexts is linked to alkaline or saline conditions in closed, evaporitic basins.
Ramon Mercedes‐Martín, Mónica Sánchez‐Román, Carlos Ayora, Mike Rogerson, Camille Thomas, Rob Van Spanning, Alex Brasier, David Wacey, John J. G. Reijmer   +8 more
wiley   +1 more source

Biogeochemical characterization of micritized carbonate grains in the shallow‐marine Al‐Kharrar Lagoon (Red Sea, Saudi Arabia)

Sedimentology, EarlyView.
ABSTRACT Micritization of marine carbonate grains is an early diagenetic process involving the alteration of the original carbonate fabric and the formation of cryptocrystalline textures through cycles of dissolution and reprecipitation. Microorganisms play a significant role in this process, actively contributing to the formation of constructive and ...
Camila Areias, Elisa Garuglieri, Thomas Teillet, Viswasanthi Chandra, Ramona Marasco, Volker Vahrenkamp, Daniele Daffonchio, John J. G. Reijmer, Mónica Sánchez‐Román   +8 more
wiley   +1 more source

Development and factors controlling tropical carbonate barrier island systems—Bar Al Hikman; mid‐late Holocene, Oman

Sedimentology, EarlyView.
ABSTRACT Modern carbonate barrier island systems are crucial coastal geomorphological features increasingly affected by human activities and global environmental change. Predicting their evolution is essential for effective coastal management. In addition, in the subsurface, palaeo‐barriers may hold valuable reservoir potential; however, due to complex
Thomas Teillet, Peter Homewood, Monique Mettraux, Perrine Bois, Daniele Melini, Giorgio Spada, Alexander Petrovic, Pankaj Khanna, Volker Vahrenkamp   +8 more
wiley   +1 more source

Resolving allogenic forcings on shallow‐marine sedimentary archives of the Taiwan Western Foreland Basin

Sedimentology, EarlyView.
ABSTRACT An investigation of allogenic forcings on shallow‐marine strata of the Miocene–Pliocene Kueichulin Formation, Taiwan Western Foreland Basin, reveals that shifts in palaeoenvironments were strongly controlled by: (1) orogenesis and basin subsidence, (2) precession‐driven hydroclimate and (3) obliquity‐driven atmospheric and ocean circulation ...
Amy I. Hsieh, Romain Vaucher, James A. MacEachern, Christian Zeeden, Chuqiao Huang, Andrew T. Lin, Ludvig Löwemark, Shahin E. Dashtgard   +7 more
wiley   +1 more source

The impact of a freshwater diluted plume on spatial halite accumulation in a hypersaline lake: Direct observations from the Dead Sea

Sedimentology, EarlyView.
ABSTRACT The role of freshwater inputs and salinity gradients in hypersaline basins is crucial for understanding the formation of evaporitic sequences. However, this role remains poorly understood, as it involves complex processes such as mixing across density gradients, plume dynamics and air–water interactions.
Ziv Mor, Haggai Eyal, Ido Sirota, Roie Ezraty, Efrat Morin, Eckart Meiburg, Nadav G. Lensky   +6 more
wiley   +1 more source

Fold‐and‐Thrust Belt and Early Alpine Relief Recorded by Calcite U–Pb Dating of an Uplifted Paleo‐Canyon (Vercors Massif, France)

Terra Nova, Volume 37, Issue 3, Page 148-156, June 2025.
ABSTRACT The long‐term evolution of orogenic drainage systems is closely related to the propagation of tectonic structures, which gives rise to the topography and hence anisotropies for river incision. This study focuses on the subalpine Vercors Massif (SW French Alps), reconstructing the geometry of an uplifted paleo‐canyon and applying calcite U–Pb ...
Vivien Mai Yung Sen, Yann Rolland, Pierre G. Valla, Stéphane Jaillet, Olivier Bruguier, Dorian Bienveignant, Xavier Robert   +6 more
wiley   +1 more source

Hydrous Asthenosphere Underneath the Northern Pannonian Basin

Terra Nova, Volume 37, Issue 3, Page 164-174, June 2025.
ABSTRACT This study reveals the structural hydroxyl content in clinopyroxenes of three cumulate xenoliths from the Nógrád‐Gömör/Novohrad‐Gemer Volcanic Field (northern Pannonian Basin), with values ranging from 275 to 384 ppm. Based on these data, the water content of the equilibrium parental alkali basaltic melt was estimated to be between 1.5 and 2.1 
Levente Patkó, Ákos Kővágó, Monika Huraiová, Szilvia Kövér, Szilveszter Gergely, Patrik Konečný, Vratislav Hurai   +6 more
wiley   +1 more source

The Chamrousse Ophiolite (Western Alps, France): Relict of a Devono‐Carboniferous Ocean

Terra Nova, EarlyView.
ABSTRACT The Chamrousse ophiolite (Western Alps, France) is one of the best‐preserved Variscan relicts of Cambro‐Ordovician oceanisation within the northern Gondwana margin. This study presents new in situ U–Pb isotope analyses on zircon grains from that ophiolite, revealing that the oceanic stage in Chamrousse has occurred 150 Ma later than estimated.
Maureen Gunia, Carole Cordier, Emilie Janots, Adrien Vezinet, Valentine Milloud, Jean‐Baptiste Jacob, Stéphane Guillot   +6 more
wiley   +1 more source

Schist Belts of the Benin‐Nigeria Shield Reveal a Neoproterozoic History

Terra Nova, EarlyView.
ABSTRACT Belts of metasedimentary rocks (schist belts) in the Benin‐Nigeria Shield (BNS) are investigated for the first time using U–Pb dating and Lu‐Hf isotope analysis of detrital zircons. We report maximum depositional ages that place their deposition firmly in the Neoproterozoic and link them with strata in the Dahomey Belt, the central African ...
Axel Hofmann, Silas Dada, Samuel B. Olobaniyi, Isaac Ajigo, Marlina Elburg, Fabricio A. Caxito, Andrey Bekker   +6 more
wiley   +1 more source