Data for: Multi-stage evolution of the Xuhuai rift: Insights from the occurrence and compositional profiles of doleritic sills in the southeastern margin of the North China Craton
| Main Author: | Peng, Peng |
|---|---|
| Other Authors: | SU, Xiangdong |
| Format: | Dataset |
| Terbitan: |
Mendeley
, 2020
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| Subjects: | |
| Online Access: |
https:/data.mendeley.com/datasets/539sw4tr8b |
Daftar Isi:
- The chemical data measured from the Pingshan sill is presented in Supplementary Table S1. The variations in composition of intercumulus and cumulus clinopyroxene present an almost M-shaped profile. Some of the clinopyroxene grains is always normally zoned, with high Mg# (and En) cores passing into low Mg# (and En) rims with compositional differences of up to 19 % (10 % for En). Although clinopyroxene have variable compositions (Wo37.7-47.6En34.5-47.7Fs9.8-26.6) and Mg# (0.57-0.83), with relatively low TiO2 (0.5-1.3 wt%), MnO (0.1-0.5 wt%) and Na2O (0.2-0.7 wt%) contents, it should be noted that clinopyroxene with highest Mg# [Mg/(Mg+Fe2+)] and En at 39 m, 20 m and 11.5 m height. It is difficultly attributed the crossover levels for En and Mg# in clinopyroxene from this sill to mechanical sorting of clinopyroxene crystals in a single magma injection.