Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves
Modern bryozoan skeletal mineralogy varies with seawater temperature: polar Antarctic bryozoans are mainly low-Mg calcite, whereas temperate Tasmanian bryozoans are predominantly high-Mg calcite with variable amounts of aragonite. Bivalve molluscs from both polar and temperate regions are mainly ara...
Published in: | Papers and Proceedings of the Royal Society of Tasmania |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1996
|
Subjects: | |
Online Access: | https://eprints.utas.edu.au/14436/ https://eprints.utas.edu.au/14436/4/1996-Rao-Comparison.pdf |
id |
ftunivtasmania:oai:eprints.utas.edu.au:14436 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasmania:oai:eprints.utas.edu.au:14436 2023-05-15T14:00:15+02:00 Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves Rao, CP Amini, ZZ Franklin, DC 1996 application/pdf https://eprints.utas.edu.au/14436/ https://eprints.utas.edu.au/14436/4/1996-Rao-Comparison.pdf en eng https://eprints.utas.edu.au/14436/4/1996-Rao-Comparison.pdf Rao, CP, Amini, ZZ and Franklin, DC 1996 , 'Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves' , Papers and Proceedings of the Royal Society of Tasmania, vol. 130, no. 2 , pp. 87-93 , doi:10.26749/rstpp.130.2.87 <http://dx.doi.org/10.26749/rstpp.130.2.87>. cc_utas Royal Society of Tasmania RST Van Diemens Land natural history science ecology taxonomy botany zoology geology geography papers & proceedings Australia UTAS Library Article PeerReviewed 1996 ftunivtasmania https://doi.org/10.26749/rstpp.130.2.87 2020-05-30T07:28:17Z Modern bryozoan skeletal mineralogy varies with seawater temperature: polar Antarctic bryozoans are mainly low-Mg calcite, whereas temperate Tasmanian bryozoans are predominantly high-Mg calcite with variable amounts of aragonite. Bivalve molluscs from both polar and temperate regions are mainly aragonite with variable amounts of low-Mg calcite. The o180 and o13C isotope fields of polar skeletons are clearly separated from the temperate fields, due to differences in seawater temperatures, levels of o13C in seawater and the circulation of seawater masses. 0180 values of bryozoa, benthic foraminifera and bivalve molluscs give near-equilibrium seawater temperatures. Small differences in 0180 and o13C values between skeletons are due to their variable growth rates. Meltwater effects are small (7%) in the polar Antarctic Sea and high (<25%) in the shallow Arctic Sea because ice sheets do not melt in the Antarctic region, whereas significant melting of ice sheets occurs in summer in the Arctic regions. Skeletal carbonate mineralogy and 0180 and o13C variations can be used in the recognition of ancient, non-tropical carbonate skeletons and carbonate rocks. Article in Journal/Newspaper Antarc* Antarctic Arctic Foraminifera* University of Tasmania: UTas ePrints Arctic Antarctic The Antarctic Papers and Proceedings of the Royal Society of Tasmania 130 2 87 93 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Royal Society of Tasmania RST Van Diemens Land natural history science ecology taxonomy botany zoology geology geography papers & proceedings Australia UTAS Library |
spellingShingle |
Royal Society of Tasmania RST Van Diemens Land natural history science ecology taxonomy botany zoology geology geography papers & proceedings Australia UTAS Library Rao, CP Amini, ZZ Franklin, DC Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves |
topic_facet |
Royal Society of Tasmania RST Van Diemens Land natural history science ecology taxonomy botany zoology geology geography papers & proceedings Australia UTAS Library |
description |
Modern bryozoan skeletal mineralogy varies with seawater temperature: polar Antarctic bryozoans are mainly low-Mg calcite, whereas temperate Tasmanian bryozoans are predominantly high-Mg calcite with variable amounts of aragonite. Bivalve molluscs from both polar and temperate regions are mainly aragonite with variable amounts of low-Mg calcite. The o180 and o13C isotope fields of polar skeletons are clearly separated from the temperate fields, due to differences in seawater temperatures, levels of o13C in seawater and the circulation of seawater masses. 0180 values of bryozoa, benthic foraminifera and bivalve molluscs give near-equilibrium seawater temperatures. Small differences in 0180 and o13C values between skeletons are due to their variable growth rates. Meltwater effects are small (7%) in the polar Antarctic Sea and high (<25%) in the shallow Arctic Sea because ice sheets do not melt in the Antarctic region, whereas significant melting of ice sheets occurs in summer in the Arctic regions. Skeletal carbonate mineralogy and 0180 and o13C variations can be used in the recognition of ancient, non-tropical carbonate skeletons and carbonate rocks. |
format |
Article in Journal/Newspaper |
author |
Rao, CP Amini, ZZ Franklin, DC |
author_facet |
Rao, CP Amini, ZZ Franklin, DC |
author_sort |
Rao, CP |
title |
Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves |
title_short |
Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves |
title_full |
Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves |
title_fullStr |
Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves |
title_full_unstemmed |
Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves |
title_sort |
comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, antarctic and tasmanian shelves |
publishDate |
1996 |
url |
https://eprints.utas.edu.au/14436/ https://eprints.utas.edu.au/14436/4/1996-Rao-Comparison.pdf |
geographic |
Arctic Antarctic The Antarctic |
geographic_facet |
Arctic Antarctic The Antarctic |
genre |
Antarc* Antarctic Arctic Foraminifera* |
genre_facet |
Antarc* Antarctic Arctic Foraminifera* |
op_relation |
https://eprints.utas.edu.au/14436/4/1996-Rao-Comparison.pdf Rao, CP, Amini, ZZ and Franklin, DC 1996 , 'Comparison between modern polar and temperate skeletal carbonate mineralogy and oxygen and carbon isotopes, Antarctic and Tasmanian shelves' , Papers and Proceedings of the Royal Society of Tasmania, vol. 130, no. 2 , pp. 87-93 , doi:10.26749/rstpp.130.2.87 <http://dx.doi.org/10.26749/rstpp.130.2.87>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.26749/rstpp.130.2.87 |
container_title |
Papers and Proceedings of the Royal Society of Tasmania |
container_volume |
130 |
container_issue |
2 |
container_start_page |
87 |
op_container_end_page |
93 |
_version_ |
1766269262718042112 |