Microscale observations of sulfate reduction

Correlation of microbial activity with lithified micritic laminae in modern marine stromatolites

P. T. Visscher, Pamela R Reid, B. M. Bebout

Research output: Contribution to journalArticle

264 Citations (Scopus)

Abstract

We report for the first time micrometer-scale correlation of geologic and microbial processes in modern marine stromatolites. Precipitation of micritic laminae in these stromatolites was studied by comparing microstructure, as observed in petrographic thin sections, with microbial sulfate-reduction activity. Two-dimensional mapping of sulfate-reduction rates was implemented by incubating a vertical section of a stromatolite face on silver foil coated with 35SO2- 4. Our results show that sulfate-reduction activity is high in zones of CaCO3 precipitation and indicate that microbial activity produces lithified micritic laminae near the surface of the stromatolites. Similarities with micritic laminae in ancient stromatolites suggest that sulfate reduction may also have been an important mechanism of carbonate precipitation in these fossilized structures.

Original languageEnglish (US)
Pages (from-to)919-922
Number of pages4
JournalGeology
Volume28
Issue number10
DOIs
StatePublished - 2000
Externally publishedYes

Fingerprint

microbial activity
sulfate
stromatolite
thin section
silver
microstructure
timescale
carbonate

Keywords

  • Bacteria
  • Calciumcarbonate precipitation
  • Stromatolites
  • Sulfatereduction

ASJC Scopus subject areas

  • Geology

Cite this

Microscale observations of sulfate reduction : Correlation of microbial activity with lithified micritic laminae in modern marine stromatolites. / Visscher, P. T.; Reid, Pamela R; Bebout, B. M.

In: Geology, Vol. 28, No. 10, 2000, p. 919-922.

Research output: Contribution to journalArticle

@article{fb91eb5fe6424ff288704320d07511d6,
title = "Microscale observations of sulfate reduction: Correlation of microbial activity with lithified micritic laminae in modern marine stromatolites",
abstract = "We report for the first time micrometer-scale correlation of geologic and microbial processes in modern marine stromatolites. Precipitation of micritic laminae in these stromatolites was studied by comparing microstructure, as observed in petrographic thin sections, with microbial sulfate-reduction activity. Two-dimensional mapping of sulfate-reduction rates was implemented by incubating a vertical section of a stromatolite face on silver foil coated with 35SO2- 4. Our results show that sulfate-reduction activity is high in zones of CaCO3 precipitation and indicate that microbial activity produces lithified micritic laminae near the surface of the stromatolites. Similarities with micritic laminae in ancient stromatolites suggest that sulfate reduction may also have been an important mechanism of carbonate precipitation in these fossilized structures.",
keywords = "Bacteria, Calciumcarbonate precipitation, Stromatolites, Sulfatereduction",
author = "Visscher, {P. T.} and Reid, {Pamela R} and Bebout, {B. M.}",
year = "2000",
doi = "10.1130/0091-7613(2000)28<919:MOOSRC>2.0.CO",
language = "English (US)",
volume = "28",
pages = "919--922",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "10",

}

TY - JOUR

T1 - Microscale observations of sulfate reduction

T2 - Correlation of microbial activity with lithified micritic laminae in modern marine stromatolites

AU - Visscher, P. T.

AU - Reid, Pamela R

AU - Bebout, B. M.

PY - 2000

Y1 - 2000

N2 - We report for the first time micrometer-scale correlation of geologic and microbial processes in modern marine stromatolites. Precipitation of micritic laminae in these stromatolites was studied by comparing microstructure, as observed in petrographic thin sections, with microbial sulfate-reduction activity. Two-dimensional mapping of sulfate-reduction rates was implemented by incubating a vertical section of a stromatolite face on silver foil coated with 35SO2- 4. Our results show that sulfate-reduction activity is high in zones of CaCO3 precipitation and indicate that microbial activity produces lithified micritic laminae near the surface of the stromatolites. Similarities with micritic laminae in ancient stromatolites suggest that sulfate reduction may also have been an important mechanism of carbonate precipitation in these fossilized structures.

AB - We report for the first time micrometer-scale correlation of geologic and microbial processes in modern marine stromatolites. Precipitation of micritic laminae in these stromatolites was studied by comparing microstructure, as observed in petrographic thin sections, with microbial sulfate-reduction activity. Two-dimensional mapping of sulfate-reduction rates was implemented by incubating a vertical section of a stromatolite face on silver foil coated with 35SO2- 4. Our results show that sulfate-reduction activity is high in zones of CaCO3 precipitation and indicate that microbial activity produces lithified micritic laminae near the surface of the stromatolites. Similarities with micritic laminae in ancient stromatolites suggest that sulfate reduction may also have been an important mechanism of carbonate precipitation in these fossilized structures.

KW - Bacteria

KW - Calciumcarbonate precipitation

KW - Stromatolites

KW - Sulfatereduction

UR - http://www.scopus.com/inward/record.url?scp=84874960833&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874960833&partnerID=8YFLogxK

U2 - 10.1130/0091-7613(2000)28<919:MOOSRC>2.0.CO

DO - 10.1130/0091-7613(2000)28<919:MOOSRC>2.0.CO

M3 - Article

VL - 28

SP - 919

EP - 922

JO - Geology

JF - Geology

SN - 0091-7613

IS - 10

ER -