Dissolution of biogenic carbonates: Effects of skeletal structure

Dissolution of biogenic shallow-water carbonates exposed on deep-sea moorings indicates that skeletal structure is important for the rate of disintegration of biogenic carbonates, besides mineralogy and grain size of particles. The aragonites and high Mg-calcites used represent a wide spectrum of mi...

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Published in:Marine Geology
Main Authors: Henrich, Rüdiger, Wefer, Gerold
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 1986
Subjects:
Online Access:https://oceanrep.geomar.de/id/eprint/33233/
https://oceanrep.geomar.de/id/eprint/33233/7/Henrich_Wefer.pdf
https://doi.org/10.1016/0025-3227(86)90077-0
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spelling ftoceanrep:oai:oceanrep.geomar.de:33233 2023-05-15T16:02:32+02:00 Dissolution of biogenic carbonates: Effects of skeletal structure Henrich, Rüdiger Wefer, Gerold 1986 text https://oceanrep.geomar.de/id/eprint/33233/ https://oceanrep.geomar.de/id/eprint/33233/7/Henrich_Wefer.pdf https://doi.org/10.1016/0025-3227(86)90077-0 en eng Elsevier https://oceanrep.geomar.de/id/eprint/33233/7/Henrich_Wefer.pdf Henrich, R. and Wefer, G. (1986) Dissolution of biogenic carbonates: Effects of skeletal structure . Marine Geology, 71 (3-4). pp. 341-362. DOI 10.1016/0025-3227(86)90077-0 <https://doi.org/10.1016/0025-3227%2886%2990077-0>. doi:10.1016/0025-3227(86)90077-0 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1986 ftoceanrep https://doi.org/10.1016/0025-3227(86)90077-0 2023-04-07T15:26:17Z Dissolution of biogenic shallow-water carbonates exposed on deep-sea moorings indicates that skeletal structure is important for the rate of disintegration of biogenic carbonates, besides mineralogy and grain size of particles. The aragonites and high Mg-calcites used represent a wide spectrum of mineralogies and types of skeletal framework. The particles were deployed at different water depths on a mooring in the Drake Passage for 52 days. Weight loss curves for the various types of particles show the relative importance of the different structural factors for the disintegration of these biogenic carbonates. Organic coatings, intraskeletal pore spaces, and sizes and shapes of individual crystallites in the skeletons may be more important than carbonate mineralogy and particle size in cases. The presence of internal sediments, cement aggregates and natural contaminations and of diatoms incorporated during growth into carbonate skeletons, strongly influence the disintegration of the skeletal materials. The first step of particle disintegration is the selective removal of impurities. This step is analogous to a “cleaning” of specimens. It is succeeded by initial dissolution, by strong dissolution and finally by disintegration. Article in Journal/Newspaper Drake Passage OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Drake Passage Marine Geology 71 3-4 341 362
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collection OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
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language English
description Dissolution of biogenic shallow-water carbonates exposed on deep-sea moorings indicates that skeletal structure is important for the rate of disintegration of biogenic carbonates, besides mineralogy and grain size of particles. The aragonites and high Mg-calcites used represent a wide spectrum of mineralogies and types of skeletal framework. The particles were deployed at different water depths on a mooring in the Drake Passage for 52 days. Weight loss curves for the various types of particles show the relative importance of the different structural factors for the disintegration of these biogenic carbonates. Organic coatings, intraskeletal pore spaces, and sizes and shapes of individual crystallites in the skeletons may be more important than carbonate mineralogy and particle size in cases. The presence of internal sediments, cement aggregates and natural contaminations and of diatoms incorporated during growth into carbonate skeletons, strongly influence the disintegration of the skeletal materials. The first step of particle disintegration is the selective removal of impurities. This step is analogous to a “cleaning” of specimens. It is succeeded by initial dissolution, by strong dissolution and finally by disintegration.
format Article in Journal/Newspaper
author Henrich, Rüdiger
Wefer, Gerold
spellingShingle Henrich, Rüdiger
Wefer, Gerold
Dissolution of biogenic carbonates: Effects of skeletal structure
author_facet Henrich, Rüdiger
Wefer, Gerold
author_sort Henrich, Rüdiger
title Dissolution of biogenic carbonates: Effects of skeletal structure
title_short Dissolution of biogenic carbonates: Effects of skeletal structure
title_full Dissolution of biogenic carbonates: Effects of skeletal structure
title_fullStr Dissolution of biogenic carbonates: Effects of skeletal structure
title_full_unstemmed Dissolution of biogenic carbonates: Effects of skeletal structure
title_sort dissolution of biogenic carbonates: effects of skeletal structure
publisher Elsevier
publishDate 1986
url https://oceanrep.geomar.de/id/eprint/33233/
https://oceanrep.geomar.de/id/eprint/33233/7/Henrich_Wefer.pdf
https://doi.org/10.1016/0025-3227(86)90077-0
geographic Drake Passage
geographic_facet Drake Passage
genre Drake Passage
genre_facet Drake Passage
op_relation https://oceanrep.geomar.de/id/eprint/33233/7/Henrich_Wefer.pdf
Henrich, R. and Wefer, G. (1986) Dissolution of biogenic carbonates: Effects of skeletal structure . Marine Geology, 71 (3-4). pp. 341-362. DOI 10.1016/0025-3227(86)90077-0 <https://doi.org/10.1016/0025-3227%2886%2990077-0>.
doi:10.1016/0025-3227(86)90077-0
op_rights info:eu-repo/semantics/restrictedAccess
op_doi https://doi.org/10.1016/0025-3227(86)90077-0
container_title Marine Geology
container_volume 71
container_issue 3-4
container_start_page 341
op_container_end_page 362
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