HFSE Characteristics of Basaltic Volcanic Wall Rocks Around BIFs in Benxi Area

doi:10.12068/j.issn.1005-3026.2016.08.022

Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (8): 1172-1176.DOI: 10.12068/j.issn.1005-3026.2016.08.022

• Resources & Civil Engineering • Previous Articles Next Articles

HFSE Characteristics of Basaltic Volcanic Wall Rocks Around BIFs in Benxi Area

HAN Chang-ik^1,2， WANG En-de¹， FU Jian-fei¹， RA Chong-yol²

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. College of Geoexploration Engineering， Kimchaek University of Technology， Pyongyang 999093， DPRK.

Received:2015-06-29 Revised:2015-06-29 Online:2016-08-15 Published:2016-08-12
Contact: HAN Chang-ik
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Abstract

Abstract: BIFs have spatial and temporal association with their basaltic volcanic wall rocks in Benxi area of Liaoning Province. Through an analysis on the HFSE (high field-strength element)characteristics of basaltic volcanic wall rocks around BIFs， it was found that their w_○Nb/w_○Ta ratios (7.00~19.93) were remarkably fractionated， but the fractionation of w_○Zr/w_○Hf ratios (33.46~38.28) was not so obvious. In addition， the fractionation of w_○Nb/w_○Ta ratios had regional tendency from Gongchangling to Nanfen and Waitoushan. These migration and fractionation characteristics of HFSE showed a connection between basin evolution and subduction process. Their (w_○Nb/w_○Yb)_N ratios (1.21~18.45， average 2.72) were greater than 1， further suggesting that the tectonic setting for BIFs in the studied area was an intra-continental back arc basin.

Key words: Benxi area, BIF, basaltic volcanic wall rock, HFSE (high field-strength element), intra-continental back arc basin

CLC Number:

P612

HAN Chang-ik， WANG En-de， FU Jian-fei， RA Chong-yol. HFSE Characteristics of Basaltic Volcanic Wall Rocks Around BIFs in Benxi Area[J]. Journal of Northeastern University Natural Science, 2016, 37(8): 1172-1176.

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HFSE Characteristics of Basaltic Volcanic Wall Rocks Around BIFs in Benxi Area

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