Proterozoic Mn-oxide precipitation by planktonic plant protists (acritarchs)

S. Morad, G. Vidal

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Microfossils of plant protists called acritarchs occur embedded in, mostly, authigenic chlorite cement in sandstones of the Visingsö Group (Upper Proterozoic; southern Sweden). These microfossils are commonly encrusted by a Mn-oxide layer. Similar Mn-oxide was not observed elsewhere in the sandstones, thus suggesting that certain acritarchs have played a role in the transfer and precipitation of Mn in ancient sedimentary environments. In the light of available information on the role of extant protists in biomineralization, possible mechanisms for the precipitation of Mnoxide in the Visingsö Group are discussed.

Original languageBritish English
Pages (from-to)301-305
Number of pages5
JournalGeological Magazine
Issue number3
StatePublished - May 1989


Dive into the research topics of 'Proterozoic Mn-oxide precipitation by planktonic plant protists (acritarchs)'. Together they form a unique fingerprint.

Cite this