scholarly journals Supplemental Material: Rifting of the Indian passive continental margin: Insights from the Langjiexue basalts in the central Tethyan Himalaya, southern Tibet

2022 ◽  
Author(s):  
Chao Wang ◽  
et al.
Keyword(s):  
Trace Element ◽  
Continental Margin ◽  
Analytical Methods ◽  
Passive Continental Margin ◽  
Southern Tibet ◽  
Nd Isotope ◽  
Icp Ms ◽  
Element Variation ◽  
Tethyan Himalaya

Text S1: Analytical methods. Figure S1: Zr versus selected element variation diagrams to highlight the effects of alteration and metamorphism for the basalts from Langjiexue area. Figure S2: (A) Ti/Y vs. TiO2, and (B) Ti/Y vs. MgO diagrams for the basalt samples from the Langjiexue in Tethyan Himalaya. Table S1: Representative Permian-Triassic magmatic events along the Tethyan Himalaya. Table S2: Zircon LA-ICP-MS U-Pb in-situ analyzing results for zircons from the Langjiexue basalts. Table S3: Whole-rock major, trace element and Sr-Nd isotope data of Langjiexue basalts.

scholarly journals Supplemental Material: Rifting of the Indian passive continental margin: Insights from the Langjiexue basalts in the central Tethyan Himalaya, southern Tibet

2022 ◽  
Author(s):  
Chao Wang ◽  
et al.
Keyword(s):  
Trace Element ◽  
Continental Margin ◽  
Analytical Methods ◽  
Passive Continental Margin ◽  
Southern Tibet ◽  
Nd Isotope ◽  
Icp Ms ◽  
Element Variation ◽  
Tethyan Himalaya

Text S1: Analytical methods. Figure S1: Zr versus selected element variation diagrams to highlight the effects of alteration and metamorphism for the basalts from Langjiexue area. Figure S2: (A) Ti/Y vs. TiO2, and (B) Ti/Y vs. MgO diagrams for the basalt samples from the Langjiexue in Tethyan Himalaya. Table S1: Representative Permian-Triassic magmatic events along the Tethyan Himalaya. Table S2: Zircon LA-ICP-MS U-Pb in-situ analyzing results for zircons from the Langjiexue basalts. Table S3: Whole-rock major, trace element and Sr-Nd isotope data of Langjiexue basalts.

High-resolution LA-ICP-MS trace-element mapping of magmatic biotite: A new approach for studying syn- to post-magmatic evolution

2020 ◽  
Vol 58 (3) ◽  
pp. 293-311 ◽  
Author(s):  
Zeinab Azadbakht ◽  
David R. Lentz
Keyword(s):  
New Brunswick ◽  
Trace Element ◽  
Inductively Coupled Plasma ◽  
Fluid Phase ◽  
New Approach ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Magma Crystallization ◽  
Topaz Granite

ABSTRACT Biotite grains from 22 felsic intrusions in New Brunswick were mapped in situ using a laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS). We investigated the extent to which biotite can retain its magmatic zoning patterns and, where zoning does exist, how it can be used to elucidate early to late stage, syn-magmatic to post-crystallization processes. Although the major element and halogen contents of the examined biotite phenocrysts are homogeneous, two-thirds of the grains display trace-element zoning for Ba, Rb, and Cs. The results also indicated that zoning is better retained in larger grains (i.e., > 500 × 500 μm) with minimal alteration and mineral inclusions. An exceptionally well-zoned Li-rich siderophyllite from the Pleasant Ridge topaz granite in southwestern New Brunswick shows Ti, Ta, Sn, W, Cs, Rb, and V (without Li or Ba) zoning. Cesium values increase from 200 to 1400 ppm from core to rim. Conversely, Sn and W values decrease toward the rim (50 to 10 and 100 to 10 ppm, respectively). Tantalum and Ti values show fewer variations but drop abruptly close to the rim of the grain (100 to 20 and 2000 to 500 ppm, respectively). These observations may indicate crystallization of mineral phases with high partition coefficients for these highly incompatible elements (except Ti) (e.g., cassiterite and rutile) followed by fractionation of a fluid phase at a later stage of magma crystallization. The preservation of zoning may indicate rapid cooling post-crystallization of the parent magma.

In Situ U‐Th‐Pb Dating and Sr‐Nd Isotope Analysis of Bastnäsite by LA‐(MC)‐ICP‐MS

2019 ◽  
Vol 43 (4) ◽  
pp. 543-565 ◽  
Author(s):  
Yue‐Heng Yang ◽  
Fu‐Yuan Wu ◽  
Qiu‐Li Li ◽  
Yamirka Rojas‐Agramonte ◽  
Jin‐Hui Yang ◽  
...  
Keyword(s):  
Isotope Analysis ◽  
Nd Isotope ◽  
Icp Ms

In situ LA–ICP-MS and EPMA trace element characterization of Fe–Ti oxides from the phoscorite–carbonatite association at Phalaborwa, South Africa

2016 ◽  
Vol 52 (5) ◽  
pp. 747-768 ◽  
Author(s):  
Lorenzo Milani ◽  
Robert Bolhar ◽  
R. Grant Cawthorn ◽  
Dirk Frei
Keyword(s):  
South Africa ◽  
Trace Element ◽  
Ti Oxides ◽  
Icp Ms

The Geochemistry of the Granitic Rocks of Halifax County, Nova Scotia

1974 ◽  
Vol 11 (5) ◽  
pp. 650-657 ◽  
Author(s):  
T. E. Smith
Keyword(s):  
Nova Scotia ◽  
Trace Element ◽  
Major Element ◽  
Biotite Granite ◽  
Granitic Rocks ◽  
Trace Element Chemistry ◽  
Quartz Monzonite ◽  
Lower Palaeozoic ◽  
Element Variation

Studies of part of a large batholith in southwest Nova Scotia show that granitic rocks of two different ages penetrate the Lower Palaeozoic metasediments of the Meguma Group. They are distinguished by their field relationships, mineralogy, and petrology from an older series, varying from biotite granodiorite through quartz monzonite to muscovite biotite granite, which is penetrated by younger large dikes, up to 1.5 km wide, of alaskite. Rb–Sr whole rock isochron ages show that the older series was emplaced approximately 415 m.y. ago and that the younger alaskite dikes were emplaced about 350 m.y. ago. Major and trace element chemistry shows that the older series of granitic rocks were formed by differentiation of a calc-alkali magma in situ. The younger dikes are all highly silicic, show limited major element variation, and have been affected by hydrothermal metasomatism.

Genesis of the Gaosong Sn–Cu deposit, Gejiu district, SW China: Constraints from in situ LA-ICP-MS cassiterite U–Pb dating and trace element fingerprinting

2018 ◽  
Vol 92 ◽  
pp. 627-642 ◽  
Author(s):  
Jia Guo ◽  
Rongqing Zhang ◽  
Congying Li ◽  
Weidong Sun ◽  
Yongbin Hu ◽  
...  
Keyword(s):  
Trace Element ◽  
Sw China ◽  
Icp Ms
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