Millimeter-scale variations of stable isotope abundances in carbonates from banded iron-formations in the Hamersley Group of Western Australia [0.03%]
西澳大利亚哈默斯利群带铁建造中碳酸盐岩稳定同位素毫米级变化特征
M E Baur,J M Hayes,S A Studley et al.
M E Baur et al.
Several diamond drill cores from formations within the Hamersley Group of Western Australia have been studied for evidence of short-range variations in the isotopic compositions of the carbonates. For a set of 32 adjacent microbands analyze...
Carbonate petrography, kerogen distribution, and carbon and oxygen isotope variations in an early Proterozoic transition from limestone to iron-formation deposition, Transvaal Supergroup, South Africa [0.03%]
南非Transvaal超级群早元古代碳酸盐岩岩石学、干酪根分布及碳氧同位素组成的变化：从石灰岩沉积到铁建造沉积的转变
N J Beukes,C Klein,A J Kaufman et al.
N J Beukes et al.
The transition zone comprises Campbellrand microbialaminated (replacing "cryptalgalaminate") limestone and shale, with minor dolomite, conformably overlain by the Kuruman Iron Formation of which the basal part is characterized by siderite-r...