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Biomarkers (Alkanes) of the Xuanlong ‐ Type Iron Deposits
Author(s) -
Zhili Liu,
Xuexian Liu,
Pengfu Li,
Rulin Du
Publication year - 1995
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1995.mp8004004.x
Subject(s) - phytane , pristane , stromatolite , iron ore , sedimentary rock , geochemistry , environmental chemistry , geology , banded iron formation , algae , chemistry , mineralogy , hydrocarbon , biology , botany , metallurgy , carbonate , materials science , organic chemistry
Abstract The authors studied the biomarkers (alkanes) of eight iron ore samples from Nianpanshan and Dabaodui of Pangjiabao and Longguan, Xuanhua, Hebei. These samples have higher nC 15 ‐ nC 20 contents, with main peaks at nC 16 , nC 17 and nC 18 , and contain abundant pristane and phytane. These results indicate that iron stromatolite and iron oncolites in orebodies are sedimentary structures of algal origin. Sedimentary iron accumulation mainly results from activity of blue algae. This study provides new valuable evidence for the origin of Xuanlong ‐ type iron deposits.