Results 41 to 50 of about 2,681 (235)

Petrogenesis of Granitoids, U-Pb zircon geochronology, Sr-Nd Petrogenesis of granitoids, U-Pb zircon geochronology, Sr-Nd isotopic characteristics, and important occurrence of Tertiary mineralization within the Lut block, eastern Iran

Journal of Economic Geology, 2012
Tertiary intrusive granitoids within the Lut block in the Khorasan Razavi and South Khorasan provinces are mainly sub-volcanic with porphyry texture and their composition varies from granite to diorite but monzonite is dominant.
Mohammad Hassan Karimpour, Ferdowsi University of Mashhad , G. Lang Farmer, Colorado   +3 more
doaj   +3 more sources

U–Pb geochronology of carbonate-hosted Pb–Zn ores reveals plate-tectonic evolution of eastern Asia during the early Paleozoic

Scientific Reports
The Mississippi Valley–type (MVT) deposits reached their maximum abundance during the final assembly of Pangea. The intense orogenic activity during this assembly in relatively low latitudes created abundant opportunities for the migration of sedimentary
Bin Li, Wen-Dong Zhang, Jian-Xin Zhao, Peng Liu, Jing-Ping Feng, Yue-Xing Feng, Yang Xiao   +6 more
doaj   +1 more source

A Common Reference Material for Mass‐Dependent Sn Isotope Compositions: An Inter‐Laboratory Calibration Approach

Geostandards and Geoanalytical Research, EarlyView.
Key Points We recommend using the notation δ122/118SnNIST SRM 3161a for mass‐dependent Sn isotope data. We derived conversion factors relative to NIST SRM 3161a for Puri Sn CEZA (0.132 ± 0.011‰), Sn Lyon (0.229 ± 0.016‰), Sn IPGP (0.162 ± 0.018‰). Tin isotope compositions are presented for SPEX CertiPrep Sn and nine USGS reference materials.
Aurélia C.E. Meister, Manuela A. Fehr, Quentin Amet, Gerhard Brügmann, Caroline Fitoussi, Matthias Friebel, Weiqiang Li, Frederic Moynier, Jia‐Xin She, Xueying Wang, Maria Schönbächler   +10 more
wiley   +1 more source

Initial study of regolith exposure ages and burial conditions on Ryugu: Cosmogenic nuclides score in two touchdowns

Meteoritics &Planetary Science, EarlyView.
Abstract Surface processes on the asteroid Ryugu have been investigated using cosmic‐ray‐produced radionuclides, 10Be, 26Al, and 36Cl, and stable noble gases, on eight samples returned by the Hayabusa2 spacecraft. The 10Be and 26Al along with 21Ne measurements indicate that the two Chamber A samples A0105 collected during the first touchdown (TD) were ...
Kunihiko Nishiizumi, Keisuke Nagao, Marc W. Caffee, Ryuji Okazaki, Jozef Masarik, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Hiroshi Naraoka, Hikaru Yabuta, Kanako Sakamoto, Kasumi Yogata, Toru Yada, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda, Masanao Abe, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Hirotaka Sawada, Satoshi Tanaka, Tomohiro Usui, Koji Wada, Hajime Yano, Makoto Yoshikawa, Hayabusa2 Initial Analysis Volatile Team   +30 more
wiley   +1 more source

Strontium Isotope Characteristics (δ88/86Sr, 87Sr/86Sr) of Arima‐Type Brines Originated From Slab‐Fluids

Geophysical Research Letters, 2023
In the southwest Japan forearc, slab‐fluids produced from subducted materials migrate to crustal levels and appear as deep‐seated brine. We have analyzed for the first‐time stable strontium isotopes in non‐volcanic spring water with high salinity ...
T. Kani, K. Misawa, N. Morikawa, K. Kazahaya, F. Kusuhara, S. Yoneda, Y. Terakado   +6 more
doaj   +1 more source

Rare Earth Elements and Radiogenic Isotopes from Mineral Dust in East Antarctica: Sensitive Tracers of the Atmospheric Circulation and Climate Variability Through Time [PDF]

, 2023
Nadine Mattielli, Stefania Gili, Sibylle Boxho, Aubry Vanderstraeten, Goulven G. Laruelle, Aloys Bory, Amélie Chaput, James King, Diego M. Gaiero, Barbara Delmonte, Paul Vallelonga, Paola Formenti, Paolo Gabrielli, Steeve Bonneville   +13 more
openalex   +1 more source

Monogenetic Near‐Island Seamounts in the Galápagos Archipelago

Geochemistry, Geophysics, Geosystems, 2020
Rarely have small seamounts on the flanks of hotspot derived ocean‐island volcanoes been the targets of sampling, due to sparse high‐resolution mapping near ocean islands.
D. M. Schwartz, V. D. Wanless, S. A. Soule, M. D. Schmitz, M. D. Kurz   +4 more
doaj   +1 more source

Weathering and denudation fluxes in the Lake Baikal watershed and their delivery to the lake: a study of major ion fluxes, 10Be/9Be ratios and radiogenic isotopes (Sr, Nd) [PDF]

, 2021
Tim Jesper Suhrhoff, Jörg Rickli, Marcus Christl, E. G. Vologina, Е. V. Sklyarov, Derek Vance   +5 more
openalex   +1 more source

The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity - a postcollisional oxidized A-type suite [PDF]

Bulletin of the Geological Society of Finland, 2009
The ~1.8 Ga Nattanen-type granites in the Finnish Lapland and western Kola Peninsula are found as several relatively small, high-level, discordant plutons that are easily discernible as weak maxima on aeromagnetic maps.
E. Heilimo, J. Halla, L.S. Lauri, O.T. Rämö, H. Huhma, M.I. Kurhila, K. Front   +6 more
doaj   +1 more source

The palaeoenvironmental potential of bioarchaeological isotope data

Communications Earth & Environment
Bioarchaeology not only provides insights into human, animal, and environmental ecology, but also generates huge amounts of stable and radiogenic isotope data that are not well recognised by other disciplines.
Margaux L. C. Depaermentier, Michael Kempf, Marc Vander Linden, Kate Britton, Richard Madgwick, Ulf Büntgen, Dorothée G. Drucker, Jennifer R. Jones, Christophe Snoeck, Rhiannon E. Stevens   +9 more
doaj   +1 more source