Greigite (Fe3S4) is an authigenic ferrimagnetic mineral that grows as a precursor to pyrite
during early diagenetic sedimentary sulfate reduction. It can also grow at any time when …

磁性矿物的组成和颗粒粒径的分布决定了岩石或沉积物的基本磁学性质及其所携带的天然剩磁
在地质时期内的稳定性. 由于自然界中磁性矿物的复杂性和多样性, 如何有效的确定磁性矿物的 …

The dispersal of early humans from Africa by 1.75 Myr ago led to a marked expansion of
their range, from the island of Flores in the east to the Iberian peninsula in the west,,,,. This …

Morphological, stratigraphical and structural investigations integrated with palaeomagnetic
and tephrostratigraphic studies and 40Ar/39Ar measurements allowed us to define the …

In many anoxic sedimentary environments, the onset of sulfate reduction, and pyritization of
detrital iron-bearing minerals, leads to a precipitous decline in magnetic mineral …

Pyritization in late Pleistocene sediments of the Black Sea is driven by sulfide formed during
anaerobic methane oxidation. A sulfidization front is formed by the opposing gradients of …

The importance of the magnetic iron sulfide minerals, greigite (Fe3S4) and pyrrhotite
(Fe7S8), is often underappreciated in geochemical studies because they are metastable …

Detailed rock magnetic and electron microscope analyses indicate that the magnetic
signature of Neogene marine sediments from the east coast of New Zealand is dominated …

Pure ferrimagnetic greigite (Fe3S4) has been synthesized by reacting ferric chloride with
thiourea and formic acid at 170° C. Sample purity was confirmed by X‐ray diffraction …

Authigenic greigite may form at any time within a sediment during diagenesis. Its formation
pathway, timing of formation, and geological preservation potential are key to resolving the …