Results 61 to 70 of about 17,505 (279)

A uniform isotopic and chemical signature of dust exported from Patagonia: Rock sources and occurrence in southern environments [PDF]

, 2007
Patagonia is considered to be the most important source of dust from South America that is deposited in surrounding areas, and we present here a systematic Sr and Nd isotopic study of sediment currently being exported.
Brunet, Frédéric, Depetris, Pedro J., Gaiero, Diego M., Probst, Jean-Luc   +3 more
core   +3 more sources

Confronting Episodic vs. Continuous Heat Sources in Long‐Lived Hot Orogens: Insights From Petrochronological Studies in the Nova Venecia Complex, Araçuaí Orogen (SE Brazil)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Orogenic belts that sustain elevated temperatures at intermediate crustal depths for tens of millions of years are known as hot orogens. The evolution of these hot orogens is largely influenced by thermal maturation, primarily driven by the distribution of heat‐producing elements (HPEs), such as K, Th and U in the overthickened crust.
Lucas R. Schiavetti, Vinicius T. Meira, Sean Mulcahy, Jeffrey D. Vervoort, Peter L. Baker, George L. Luvizotto, Ricardo I. F. Trindade   +6 more
wiley   +1 more source

Phlogopite-Olivine Nephelinites Erupted During Early Stage Rifting, North Tanzanian Divergence

Frontiers in Earth Science, 2020
The North Tanzanian Divergence (NTD, eastern branch of the East African Rift) corresponds to an early stage of continental breakup. In the southern NTD, two quaternary volcanoes of the Manyara-Balangida rift (Labait, Kwaraha) have erupted primary ...
Céline Baudouin, Fleurice Parat
doaj   +1 more source

Rifting and Mafic Magmatism in the Hebridean Basins [PDF]

, 2015
Acknowledgements and Funding Research in the BPIP was supported by NERC grant GR9/1581, and the Carnegie Trust for the Universities of Scotland. H. Rollinson and E.
Hole, M. J., Jolley, D. W., Millett, John, Rogers, N. W.   +3 more
core   +1 more source

Insights on the volcanic and impact histories of the lunar nearside from the petrology, geochemistry, and geochronology of the Calcalong Creek lunar regolith breccia meteorite

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 392-421, March 2025.
Abstract The Calcalong Creek lunar meteorite is a regolith breccia with a lithologically diverse array of clasts set in a glassy, highly vesicular matrix. Here, we present a comprehensive new analysis of the meteorite. Comparisons to remote sensing data, lunar sample lithologies, and lunar sample ages indicate that it was likely sourced from regolith ...
B. H. Oliveira, J. F. Snape, R. Tartèse, J. F. Pernet‐Fisher, D. van Acken, M. J. Whitehouse, K. H. Joy   +6 more
wiley   +1 more source

SALINE DEPOSITS AND ALKALINE MAGMAT1SM:A GENETIC MODEL [PDF]

Journal of Sciences, Islamic Republic of Iran, 1990
The temporal-spatial coincidence of saline deposits with rifting and alkaline magmatism has now become a commonly accepted fact. The congruency of these three phenomena implies logically, their trilateral genetic interrelation.
doaj  

Rock‐buffered versus fluid‐buffered geochemistry of structurally controlled, hydrothermal dolomite: Insights from the Sichuan Basin, China

Sedimentology, EarlyView.
ABSTRACT Structurally controlled hydrothermal dolomitization, commonly driven by high‐pressure, high‐temperature fluid–rock reactions, offers insights into the tectonic evolution of sedimentary basins and the geochemical composition of their diagenetic fluids.
Huachuan Jiang, Jintong Liang, Karem Azmy, Cole A. McCormick, Taiyuan Fan, Xiaotian Li, Fei Huo, Huaguo Wen   +7 more
wiley   +1 more source

The plume-dependent granite-rhyolite magmatism

Литосфера, 2018
The plume-dependent magmatism is widespread and well justified. The bulk of it is represented by flood basalts, basalts of oceanic islands (OIB), and basalts of oceanic plateaus (OPB), though the whole scope of plume magmatism is very diverse.
Viktor N. Puchkov
doaj   +1 more source

Geochemistry, Sr-Nd-Pb isotopes and geochronology of amphibole- and mica-bearing lamprophyres in northwestern Iran: Implications for mantle wedge heterogeneity in a paleo-subduction zone [PDF]

, 2015
Highlights: • Northwestern Iranian lamprophyres have alkaline and calc-alkaline nature. • Studied lamprophyres are emplaced during Late Cretaceous to Late Miocene time.
Aghazadeh, Mehraj, Badrzadeh, Zahra, Braschi, Eleonora, Conticelli, Sandro, Prelević, Dejan, van den Bogaard, Paul   +5 more
core   +1 more source

Sedimentary record of submarine gravity‐flow events in the southern Ryukyu forearc during the last 200 000 years: archive of mega‐earthquakes and tsunamis

Sedimentology, EarlyView.
ABSTRACT Despite high convergence velocity, the southern Ryukyu subduction has relatively low and sparse instrumental seismicity, in contrast with the Yaeyama Islands, hit by huge tsunamis over the last few thousand years. This study explores the potential of deep marine sediments to record past large earthquakes and tsunamis.
Nathalie Babonneau, Gueorgui Ratzov, Charlotte Guerin, Mira Richa, Serge Lallemand, Michel Condomines, Patrick Bachelery, Delphine Bosch, Shu‐Kun Hsu, Chih‐Chieh Su, Ryuichi Shinjo, Andrew Lin, Maria‐Angela Bassetti, Marie Revel, Antonio Cattaneo, the EAGER Scientific Team, M Aizawa, G. Ballas, J.‐H. Chang, Y.‐P. Chang, T.‐T. Chen, Y.‐H. Chen, P. Das, J.‐P. Degeai, J. Déverchère, O. De Raco, N. Gosset, M. Herlédan, S.‐L. Ho, H.‐H. Hsu, Y.‐S. Huang, M. Lanson, C. Letourneau, H.‐S. Lin, L.‐F. Lin, L.‐K. Lin, M. Longo, M. Mérindol, B. Mercier de Lépinay, E. Miramontes, P. Morena, K. Nayak, D. Oregioni, L. Patry, R. K. Pillutla, V. Rigalleau, L. San Pedro, P.‐J. Su, F. Volage, K.‐Y. Wei, B. Whilhelm, N.‐T. Yu, P.‐S. Yu   +52 more
wiley   +1 more source