Sign up & Download
Sign in

Bioinduced barium precipitation in St. Callixtus and Domitilla catacombs

by S Sanchez-Moral, L Luque, J C Cañaveras, L Laiz, Valme Jurado, B Hermosin, C Saiz-Jimenez
Annals of microbiology ()

Abstract

Biofilms are widely distributed in different areas of the Roman catacombs of SS. Callixtus and Domitilla due to the abundance of mineral elements in the volcanic rock, high humidity, and artificial lighting. Cyanobacteria are responsible for biofilm formation to which heterotrophic bacteria and fungi are associated. Barite (barium sulfate) was detected as secondary mineralization in altered volcanic rocks from both catacombs. Its spatial disposition suggests an origin related with the observed bacterial mats. Witherite (barium carbonate) precipitated in cultures of bacteria isolated from the two catacombs. This suggests a role of bacteria in the biogeochemical cycle of barium in terrestrial environments and, particularly, in the mobilization of barium from the volcanic rocks and its further sulfate precipitation.

Cite this document (BETA)

Readership Statistics

6 Readers on Mendeley
by Discipline
 
 
 
by Academic Status
 
17% Lecturer
 
17% Student (Master)
 
17% Doctoral Student

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Already have an account? Sign in