khantaishir_HfR Documentation

Hafnium isotopic dataset from the Khantaishir Magmatic Complex (Mongolia)

Description

A dataset of in-situ (LA ICP-MS) Lu–Hf isotopic analyses and U–Pb ages for zircons from the Cambrian Khantaishir Magmatic Complex (Lake Zone, south-central Mongolia) (Janoušek et al. 2018).

Usage

sampleDataset("khantaishir_Hf")

Format

A data frame containing 111 zircon analyses (Lu–Hf isotopic ratios and U–Pb ages) from 5 samples of mafic–intermediate plutonic rocks.

Details

The Cambrian Khantaishir Magmatic Complex (Lake Zone, Mongolia) exposes a section of a magmatic arc system consisting of deep crustal, (ultra-)mafic cumulates (coarse-grained amphibole gabbros and hornblendites) to shallower crustal levels dominated by amphibole–biotite tonalites. These Hf in zircon isotopic data, together with whole-rock Sr–Nd isotopic compositions, point mostly to juvenile sources, with little, if any, mature crustal contribution (Janoušek et al. 2018).

KT.png

Plugin

Hf.r

Source

Vojtěch Janoušek, vojtech.janousek@geology.cz

References

Janoušek V, Jiang YD, Buriánek D, Schulmann K, Hanžl P, Soejono I, Kröner A, Altanbaatar B, Erban V, Lexa O, Ganchuluun T, Košler J (2018) Cambrian–Ordovician magmatism of the Ikh-Mongol Arc System exemplified by the Khantaishir Magmatic Complex (Lake Zone, south–central Mongolia). Gondwana Res 54:122-149. doi: 10.1016/j.gr.2017.10.003

Examples

sampleDataset("khantaishir_Hf")
groupsByLabel("sample")    
        
head(Hfinit)
        
hfAgeEps2(1:39, xmax = 1.5, ymin = -8, ymax = 16, evol.lines1 = TRUE)
        
hfViolinplot("EpsHfi")