Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins
Sediments from five Leg 167 drill sites and three piston cores were analyzed for C[subscript ORG] and CaCO₃. Oxygen isotope stratigraphy on benthic foraminifers was used to assign age models to these sedimentary records. We find that the northern and central California margin is characterized by k.y...
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College Station, Tex. : Ocean Drilling Program, Texas A & M University
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ftoregonstate:ir.library.oregonstate.edu:dz010v603 2024-04-14T08:15:51+00:00 Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins Lyle, Mitchell Mix, Alan C. Ravelo, A. Christina Andreasen, Dyke Heusser, Linda Olivarez, Annette https://ir.library.oregonstate.edu/concern/articles/dz010v603 English [eng] eng unknown College Station, Tex. : Ocean Drilling Program, Texas A & M University https://ir.library.oregonstate.edu/concern/articles/dz010v603 Copyright Not Evaluated Article ftoregonstate 2024-03-21T15:46:32Z Sediments from five Leg 167 drill sites and three piston cores were analyzed for C[subscript ORG] and CaCO₃. Oxygen isotope stratigraphy on benthic foraminifers was used to assign age models to these sedimentary records. We find that the northern and central California margin is characterized by k.y.-scale events that can be found in both the CaCO₃ and C[subscript ORG] time series. We show that the CaCO₃ events are caused by changes in CaCO₃ production by plankton, not by dissolution. We also show that these CaCO₃ events occur in marine isotope Stages (MIS) 2, 3, and 4 during Dansgaard/Oeschger interstadials. They occur most strongly, however, on the MIS 5/4 glaciation and MIS 2/1 deglaciation. We believe that the link between the northeastern Pacific Ocean and North Atlantic is primarily transmitted by the atmosphere, not the ocean. Highest CaCO₃ production and burial occurs when the surface ocean is somewhat cooler than the modern ocean, and the surface mixed layer is somewhat more stable. Article in Journal/Newspaper North Atlantic ScholarsArchive@OSU (Oregon State University) Pacific |
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ScholarsArchive@OSU (Oregon State University) |
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ftoregonstate |
language |
English unknown |
description |
Sediments from five Leg 167 drill sites and three piston cores were analyzed for C[subscript ORG] and CaCO₃. Oxygen isotope stratigraphy on benthic foraminifers was used to assign age models to these sedimentary records. We find that the northern and central California margin is characterized by k.y.-scale events that can be found in both the CaCO₃ and C[subscript ORG] time series. We show that the CaCO₃ events are caused by changes in CaCO₃ production by plankton, not by dissolution. We also show that these CaCO₃ events occur in marine isotope Stages (MIS) 2, 3, and 4 during Dansgaard/Oeschger interstadials. They occur most strongly, however, on the MIS 5/4 glaciation and MIS 2/1 deglaciation. We believe that the link between the northeastern Pacific Ocean and North Atlantic is primarily transmitted by the atmosphere, not the ocean. Highest CaCO₃ production and burial occurs when the surface ocean is somewhat cooler than the modern ocean, and the surface mixed layer is somewhat more stable. |
format |
Article in Journal/Newspaper |
author |
Lyle, Mitchell Mix, Alan C. Ravelo, A. Christina Andreasen, Dyke Heusser, Linda Olivarez, Annette |
spellingShingle |
Lyle, Mitchell Mix, Alan C. Ravelo, A. Christina Andreasen, Dyke Heusser, Linda Olivarez, Annette Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins |
author_facet |
Lyle, Mitchell Mix, Alan C. Ravelo, A. Christina Andreasen, Dyke Heusser, Linda Olivarez, Annette |
author_sort |
Lyle, Mitchell |
title |
Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins |
title_short |
Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins |
title_full |
Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins |
title_fullStr |
Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins |
title_full_unstemmed |
Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins |
title_sort |
millennial–scale caco₃ and c[subscript org] events along the northern and central california margins : stratigraphy and origins |
publisher |
College Station, Tex. : Ocean Drilling Program, Texas A & M University |
url |
https://ir.library.oregonstate.edu/concern/articles/dz010v603 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/dz010v603 |
op_rights |
Copyright Not Evaluated |
_version_ |
1796314321110695936 |