Results 81 to 90 of about 3,800 (187)

Zircon U-Pb age, geochemical characteristics, and tectonic implications of the early Permian ultrabasic dykes in the Harlik Mountain, east Tianshan, Xinjiang

Dizhi lixue xuebao
Objective  During multiple stages of magmatic activity in the Harlik Mountains of the east Tianshan, extensive granitic and mafic dyke swarms were formed.
DU Xiaofei, WANG Wei, ZHANG Chuanlin, MA Huadong, ZHU Bingyu, QIU Lin   +5 more
doaj   +1 more source

Idades U-Pb de zircão detrítico da sequência metassedimentar superior na região do Greenstone Belt de Guarinos, Goiás

Geologia USP. Série Científica, 2017
Na porção norte do Bloco Arqueano de Goiás ocorrem dois greenstone belts (Guarinos e Pilar de Goiás) cobertos por uma sequência metassedimentar, atribuída por diversos autores ao Grupo Araxá e por outros ao Grupo Serra da Mesa/Serra Dourada e, ainda ...
Alex Joaquim Choupina Andrade Silva, Luiz Sérgio Amarante Simões   +1 more
doaj   +1 more source

In situ Ba Isotopes Analyses in Barites Using LA-MC-ICP-MS [PDF]

Goldschmidt Abstracts, 2020
Shenghua Zhang, Ming Li, Wen Zhang, Tao Luo, Qian Ni, Zhaochu Hu   +5 more
openaire   +1 more source

Laser Ablation-Inductively Coupled Plasma-Mass Spectrometric Analysis Methods of Melt Inclusions and Its Geological Applications

Yankuang ceshi, 2013
Melt inclusions in phenocrysts play a very important role in petrological research for reserving the only direct information available on the temperature, pressure and chemical compositions of the magmatic system at the time that the host minerals ...
ZHAO Ling-hao, ZHAN Xiu-chun, HU Ming-yue, FAN Chen-zi, SUN Dong-yang, LIU Chuan-bao   +5 more
doaj  

In situ Sr isotope analyses by LA-MC-ICP-MS of igneous apatite and plagioclase from magmatic rocks at the CPGeo-USP

Brazilian Journal of Geology
: This contribution describes the successful implementation of in situ Sr isotope analyses by LA-MC-ICP-MS at the CPGeo-USP. The choice for an analytical configuration using measurements of half-masses allows the accurate assessment of lanthanide ...
Patricio Montecinos Munoz, Adriana Alves, Rogério Guitarrari Azzone, Pablo Cordenons, Sandra Morano, Walter Sproesser, Solange de Souza   +6 more
doaj   +1 more source

Early Paleozoic zircon ages from the Namche Migmatites of the Higher Himalayan Zone [PDF]

, 2016
第30回極域地学シンポジウム「極域から探る固体地球ダイナミクス ...

core   +1 more source

LA-MC-ICP-MS Sr Isotope Analysis of Speleothems – Choosing the Right Reference Material [PDF]

Goldschmidt Abstracts, 2020
Michael Weber, Denis Scholz, Regina Mertz-Kraus, Klaus Peter Jochum   +3 more
openaire   +1 more source

Geological age of the Yunyang dinosaur eggs revealed by in-situ carbonate U-Pb dating and its scientific implications

Frontiers in Earth Science
The Cretaceous Period, marked by global events such as volcanic activity, oceanic anoxic episodes, and the end-Cretaceous mass extinction, has been extensively studied in marine records.
Qingmin Chen, Xing Cheng, Xing Cheng, Jian Wang, Bi Zhao, Bi Zhao, Bi Zhao, Shukang Zhang, Youfeng Ning, Gaohong Wang, Kaikai He, Wenshuo Zhang, Dongxiang Yu, Jiangli Li, Jiangli Li, Yarui Zou, Yarui Zou, Gang Chen, Min Li, Hai Cheng, Hai Cheng   +20 more
doaj   +1 more source

High spatial resolution (10-50 μm) analysis of Sr isotopes in rock-forming apatite by LA-MC-ICP-MS.

J Anal At Spectrom, 2023
Buzenchi A, Moreira H, Bruguier O, Bosch D, Dhuime B.   +4 more
europepmc   +1 more source

Heterogeneous distribution of Al-26 at the birth of the Solar System

, 2011
It is believed that Al-26, a short-lived (t1/2 = 0.73 Ma) and now extinct radionuclide, was uniformly distributed in the nascent Solar System with the initial Al-26/Al-27 ratio of ~5.2\times10-5, suggesting its external stellar origin.
Boss, Catanzaro, Davis, Duprat, Ellinger, Gaidos, Gounelle, Gounelle, Gounelle, Kita, Krot, MacPherson, Makide, McKeegan, McKeegan, Ogliore, Ouellette, Quitté, Sahijpal, Tang, Tatischeff, Telus, Thrane, Williams, Yang   +24 more
core   +1 more source