Sedimentology of SPICE (Steptoean positive carbon isotope excursion): A high-resolution trace fossil and microfabric analysis of the middle to late Cambrian Alum Shale Formation, southern Sweden
(2015) In Geological Society of America. Special Papers 515. p.87-102- Abstract
- The Cambrian Alum Shale Formation in the Andrarum-3 core from Scania,
southern Sweden, consists of black siliciclastic mudstone with minor carbonate intercalations. Four facies comprise three siliciclastic mudstones and one fine-grained carbonate. The facies reflect deposition along a transect from deep ramp to basin on a Cambrian shelf. The three mudstone facies contain abundant clay clasts and laterally variable siltstone laminae. Bed-load transport processes seem to have dominated deposition on this deep shelf. These sedimentary rocks record mainly event deposition, and only relatively few, thin laminae probably resulted from suspension settling. The Alum Shale Formation deep shelf did not show a bioturbation gradient, but fecal... (More) - The Cambrian Alum Shale Formation in the Andrarum-3 core from Scania,
southern Sweden, consists of black siliciclastic mudstone with minor carbonate intercalations. Four facies comprise three siliciclastic mudstones and one fine-grained carbonate. The facies reflect deposition along a transect from deep ramp to basin on a Cambrian shelf. The three mudstone facies contain abundant clay clasts and laterally variable siltstone laminae. Bed-load transport processes seem to have dominated deposition on this deep shelf. These sedimentary rocks record mainly event deposition, and only relatively few, thin laminae probably resulted from suspension settling. The Alum Shale Formation deep shelf did not show a bioturbation gradient, but fecal strings are common and Planolites burrows are rare in all mudstone facies. Evidence for biotic colonization indicates that this mudstone environment was not persistently anoxic, but rather was most likely intermittently dysoxic. The Alum Shale Formation in the Andrarum-3 core shows an overall decrease of grain size, preserved energy indicators, and carbonate content upsection interpreted to reflect a deepening
upward. The succession can also be divided into four small-scale fining-upward
cycles that represent deepening, and four overlying coarsening-upward cycles that represent upward shallowing. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/f329e011-5e02-4e18-9a58-c3b6f7a0520e
- author
- Egenhoff, Sven O. ; Fishman, Neil S. ; Ahlberg, Per LU ; Maletz, Jörg ; Jackson, Allison ; Kolte, Ketki ; Lowers, Heather ; Mackie, James ; Newby, Warren and Petrowsky, Matthew
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Geological Society of America. Special Papers
- volume
- 515
- pages
- 16 pages
- publisher
- Geological Society of America
- external identifiers
-
- scopus:84941795529
- ISSN
- 0072-1077
- DOI
- 10.1130/2015.2515(05)
- language
- English
- LU publication?
- yes
- id
- f329e011-5e02-4e18-9a58-c3b6f7a0520e
- date added to LUP
- 2017-02-19 22:09:06
- date last changed
- 2022-01-30 18:09:48
@article{f329e011-5e02-4e18-9a58-c3b6f7a0520e,
abstract = {{The Cambrian Alum Shale Formation in the Andrarum-3 core from Scania,<br/>southern Sweden, consists of black siliciclastic mudstone with minor carbonate intercalations. Four facies comprise three siliciclastic mudstones and one fine-grained carbonate. The facies reflect deposition along a transect from deep ramp to basin on a Cambrian shelf. The three mudstone facies contain abundant clay clasts and laterally variable siltstone laminae. Bed-load transport processes seem to have dominated deposition on this deep shelf. These sedimentary rocks record mainly event deposition, and only relatively few, thin laminae probably resulted from suspension settling. The Alum Shale Formation deep shelf did not show a bioturbation gradient, but fecal strings are common and Planolites burrows are rare in all mudstone facies. Evidence for biotic colonization indicates that this mudstone environment was not persistently anoxic, but rather was most likely intermittently dysoxic. The Alum Shale Formation in the Andrarum-3 core shows an overall decrease of grain size, preserved energy indicators, and carbonate content upsection interpreted to reflect a deepening<br/>upward. The succession can also be divided into four small-scale fining-upward<br/>cycles that represent deepening, and four overlying coarsening-upward cycles that represent upward shallowing.}},
author = {{Egenhoff, Sven O. and Fishman, Neil S. and Ahlberg, Per and Maletz, Jörg and Jackson, Allison and Kolte, Ketki and Lowers, Heather and Mackie, James and Newby, Warren and Petrowsky, Matthew}},
issn = {{0072-1077}},
language = {{eng}},
pages = {{87--102}},
publisher = {{Geological Society of America}},
series = {{Geological Society of America. Special Papers}},
title = {{Sedimentology of SPICE (Steptoean positive carbon isotope excursion): A high-resolution trace fossil and microfabric analysis of the middle to late Cambrian Alum Shale Formation, southern Sweden}},
url = {{http://dx.doi.org/10.1130/2015.2515(05)}},
doi = {{10.1130/2015.2515(05)}},
volume = {{515}},
year = {{2015}},
}