Results 41 to 50 of about 6,544,459 (237)

Redefinición del Complejo Migmatítico de La Cocha - Río Téllez, con base en nuevos datos de campo, petrografía, litogeoquímica y geocronología

Boletín de Ciencias de la Tierra, 2023
El Complejo Migmatítico de la Cocha-Río Téllez está localizado en el flanco oriental de los Andes Colombianos, entre los departamentos de Nariño y Putumayo. Aflora a manera de ventanas entre depósitos volcánicos y fluvio-volcánicos recientes.
Gabriel Rodríguez-García, Carlos Sabrica   +1 more
doaj   +1 more source

Effect of Gas Flow Rates in Laser Ablation System on Accuracy and Precision of Zircon U-Pb Dating Analysis by LA-ICP-MS

Yankuang ceshi, 2022
BACKGROUND Despite zircon U-Pb dating analysis by LA-ICP-MS receiving wide acceptance, it remains a challenge to obtain results with high accuracy and precision.
TAN Xijuan, GUO Chao, FENG Yonggang, ZHOU Yi, LIANG Ting   +4 more
doaj   +1 more source

Navigating the complexity of detrital rutile provenance: methodological insights from the Neotethys Orogen in Anatolia [PDF]

Geochronology
Sedimentary provenance is a powerful tool for reconstructing convergent margin evolution. However, single mineral approaches, like detrital zircon, have struggled to track sediment input from mafic and metamorphic sources.
M. A. Mueller, M. A. Mueller, M. A. Mueller, A. Licht, A. Licht, A. Möller, C. B. Condit, J. C. Fosdick, F. Ocakoğlu, C. Campbell   +9 more
doaj   +1 more source

1.88 Ga granitoids at Sorsakoski, Central Finland: A-type magmatism within the Raahe-Ladoga suture zone [PDF]

Bulletin of the Geological Society of Finland
Four quartz monzonite – granite intrusions forming the Sorsakoski granite lithodeme, are found within the Raahe-Ladoga suture zone in Central Finland. The prevailing potassium feldspar megacrystic quartz monzonites and granites form a bimodal association
Perttu Mikkola, Maija Pietilä, O. Tapani Rämö, Hannu Huhma   +3 more
doaj   +1 more source

Geology and mineralogy of the Novo-Akhmirovskoe deposit of lithium topaz-zinnwaldite granites (East Kazakhstan)

Литосфера, 2019
Research subject. The Novo-Akhmirovskoe lithium-bearing deposit in the East Kazakhstan region, which is represented by an intrusive layer of topaz-zinnwaldite granites, is located within of the Kalba-Narym-Koktogai lithium-tantalum raremetal-granite belt.
I. Yu. Annikova, A. G. Vladimirov, S. Z. Smirnov, T. A. Oitseva, E. I. Mikheev, E. N. Jes, A. V. Travin, B. A. D’yachkov, V. I. Maslov, I. F. Gertner   +9 more
doaj   +1 more source

A Review of Research Progress on the Analytical Method of Large-n Detrital Zircon U-Pb Geochronology

Yankuang ceshi, 2022
BACKGROUND Detrital zircon U-Pb geochronology is an important tool for identifying sedimentary provenance and determining the maximum depositional age. The numbers of grains for detrital zircon provenance investigations using laser-ablation inductively ...
CHEN Xiyun, LYU Kailai, WANG Ping, HUANG Xiangtong, KONG Xinggong   +4 more
doaj   +1 more source

Strategies towards statistically robust interpretations of in situ U-Pb zircon geochronology

, 2016
Zircon U–Pb geochronology has become a keystone tool across Earth science, arguably providing the gold standard in resolving deep geological time. The development of rapid in situ analysis of zircon (via laser ablation and secondary ionization mass ...
C. Spencer, C. Kirkland, Richard J. M. Taylor   +2 more
semanticscholar   +1 more source

SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand

, 2006
Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Ireland, Trevor R., Arculus, Richard J., Richard J. Arculus, Trevor R. Ireland, Richard C. Price, Price, Richard C., Maas, Roland, Roland Maas   +7 more
core   +1 more source

Nutraceuticals in the management of autonomic function and related disorders: A comprehensive review

Pharmacological Research
Nutraceuticals have been described as phytocomplexes when derived from foods of plant origin or a pool of secondary metabolites when derived from foods of animal origin, which are concentrated and administered in an appropriate form and can promote ...
Paulo César Trindade Costa, Micaelle Oliveira de Luna Freire, Daniella de Oliveira Coutinho, Murielle Godet, Marciane Magnani, Vagner Roberto Antunes, Evandro Leite de Souza, Hubert Vidal, José Luiz de Brito Alves   +8 more
doaj   +1 more source

Toxicity of Pb and of Pb/Cd combination on the springtail Folsomia candida in natural soils: Reproduction, growth and bioaccumulation as indicators [PDF]

, 2012
The toxicity of Pb and Cd+Pb was assessed on the Collembola F. candida in two cultivated soils (SV and AU) with low organic matter (OM) content and circumneutral to basic pH, and an acid forested soil (EPC) with high OM content.
A. Bianco, A. Probst, Bianco, Audrey, Y. Crouau, Bur, Thomas, T. Bur, L. Gandois, Gandois, Laure, Probst, Anne, Crouau, Yves   +9 more
core   +1 more source