Microorganism-mediated preservation of Planolites, a common trace fossil from the Harkless Formation, Cambrian of Nevada, USA
(2012) In Sedimentary Geology 263. p.30-35- Abstract
- Specimens of Planolites, a tubular ichnofossil, from the Harkless Formation (Cambrian of Nevada) are commonly rimmed by thin layers of limonite, a probable pseudomorph after pyrite, suggesting that bacterially induced biomineralization played a key role in the preservation of the burrows. Organic material secreted by a vermiform, infaunal tracemaker is inferred to have formed the substrate for a biofilm that facilitated iron sulfide biomineralization by bacteria under localized anaerobic or dysaerobic conditions. Rapid, microbially mediated biomineralization of mucus-lined burrow walls is inferred to have promoted three-dimensional preservation of burrows by strengthening them against sediment compaction, and possibly providing sufficient... (More)
- Specimens of Planolites, a tubular ichnofossil, from the Harkless Formation (Cambrian of Nevada) are commonly rimmed by thin layers of limonite, a probable pseudomorph after pyrite, suggesting that bacterially induced biomineralization played a key role in the preservation of the burrows. Organic material secreted by a vermiform, infaunal tracemaker is inferred to have formed the substrate for a biofilm that facilitated iron sulfide biomineralization by bacteria under localized anaerobic or dysaerobic conditions. Rapid, microbially mediated biomineralization of mucus-lined burrow walls is inferred to have promoted three-dimensional preservation of burrows by strengthening them against sediment compaction, and possibly providing sufficient support for burrows to allow time for sediment infill. Decomposition of organic materials in Planolites also left evidence in sediment layers immediately above the burrows: undulose sediment surfaces and small, round, pimpleform gas escape structures. (C) 2011 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2895903
- author
- Ahn, Soo Yeun and Babcock, Loren LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Trace fossil, Biofilm, Biomineralization, Taphonomy, Cambrian, Nevada
- in
- Sedimentary Geology
- volume
- 263
- pages
- 30 - 35
- publisher
- Elsevier
- external identifiers
-
- wos:000304851400004
- scopus:84861221350
- ISSN
- 0037-0738
- DOI
- 10.1016/j.sedgeo.2011.08.003
- language
- English
- LU publication?
- yes
- id
- 71aba73f-25be-4160-856c-9357955a480d (old id 2895903)
- date added to LUP
- 2016-04-01 14:43:33
- date last changed
- 2022-03-22 01:35:15
@article{71aba73f-25be-4160-856c-9357955a480d,
abstract = {{Specimens of Planolites, a tubular ichnofossil, from the Harkless Formation (Cambrian of Nevada) are commonly rimmed by thin layers of limonite, a probable pseudomorph after pyrite, suggesting that bacterially induced biomineralization played a key role in the preservation of the burrows. Organic material secreted by a vermiform, infaunal tracemaker is inferred to have formed the substrate for a biofilm that facilitated iron sulfide biomineralization by bacteria under localized anaerobic or dysaerobic conditions. Rapid, microbially mediated biomineralization of mucus-lined burrow walls is inferred to have promoted three-dimensional preservation of burrows by strengthening them against sediment compaction, and possibly providing sufficient support for burrows to allow time for sediment infill. Decomposition of organic materials in Planolites also left evidence in sediment layers immediately above the burrows: undulose sediment surfaces and small, round, pimpleform gas escape structures. (C) 2011 Elsevier B.V. All rights reserved.}},
author = {{Ahn, Soo Yeun and Babcock, Loren}},
issn = {{0037-0738}},
keywords = {{Trace fossil; Biofilm; Biomineralization; Taphonomy; Cambrian; Nevada}},
language = {{eng}},
pages = {{30--35}},
publisher = {{Elsevier}},
series = {{Sedimentary Geology}},
title = {{Microorganism-mediated preservation of Planolites, a common trace fossil from the Harkless Formation, Cambrian of Nevada, USA}},
url = {{http://dx.doi.org/10.1016/j.sedgeo.2011.08.003}},
doi = {{10.1016/j.sedgeo.2011.08.003}},
volume = {{263}},
year = {{2012}},
}