NOAA/WDS Paleoclimatology - Diester-Haass 2004 Tasman Rise Neogene Paleoproductivity and Ice Rafting Data
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of South Pacific Ocean. The time period coverage is from 11000000 to 8600000 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
- Cite as: Diester-Haass, L.; Nees, S. (2005-01-19): NOAA/WDS Paleoclimatology - Diester-Haass 2004 Tasman Rise Neogene Paleoproductivity and Ice Rafting Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/pyw1-gb53. Accessed [date].
- Please refer to Credit tab for full citation information.
- doi:10.25921/pyw1-gb53
- noaa-ocean-5848
- NCEI DSI 1200_02
- NCEI DSI 1200_01
noaa-ocean-5848
Search Data |
|
Download Data |
|
Distribution Formats |
|
Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | Data Center Contact
NOAA World Data Service for Paleoclimatology 828-271-4800 paleo@noaa.gov |
Coverage Description | Date Range: 11000000 cal yr BP to 8600000 cal yr BP; |
Time Period | -10998050 to -8598050 |
Spatial Bounding Box Coordinates |
N: 48.499933
S: -43.959757
E: 149.928268
W: 149.1115
|
Spatial Coverage Map |
General Documentation |
|
Associated Resources |
|
Publication Dates |
|
Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns
|
Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information |
ABSTRACT SUPPLIED BY ORIGINATOR: Late Neogene sediments (11.3-1 Ma) at ODP Sites 1171 and1172 south of Tasmania are different in that (i) there is a hiatus at the more southerly Site 1171 covering the 5.23-8.7 Ma period, whereas Site 1172 shows a complete record during that interval, and (ii) coarse (up to 1000 um) sized clastic material and detrital glauconite occur at Site 1171, interpreted as ice rafted detritus from Antarctica, whereas at Site 1172 no glauconite has been found and clastic material is always smaller than 125 um, and is interpreted as eolian. Paleoproductivity as deduced from benthic foraminifers and carbonate dissolution was higher prior to 8.7 Ma than after the hiatus at Site 1171, related to the northward drift of the South Tasman Rise and increasing distance from the proto-polar front. Radiolarian opal concentrations anticorrelate with our paleoproductivity proxies. The depression in CaCO3 concentrations at 9.6-10 Ma and 10.6-11.2 Ma, and the strong dissolution, are tentatively regarded as an expression of the "carbonate crash event". The elevated productivity at Site 1171 at 5.23-4.5 Ma corresponds to a paleoproductivity maximum at Site 1172, where a sharp 3-5 fold productivity increase at 7-6.5 Ma points to the occurrence of the late Miocene "biogenic bloom event". Both these major late Miocene events, well known in the equatorial Indo-Pacific and SE Atlantic upwelling areas, have not be seen in the subantarctic before.
|
Purpose | Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. |
Dataset Citation |
|
Cited Authors |
|
Originators |
|
Publishers |
|
Theme keywords | Global Change Master Directory (GCMD) Science Keywords
|
Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
|
Place keywords |
|
Use Constraints |
|
Access Constraints |
|
Fees |
|
Last Modified: 2024-01-29
For questions about the information on this page, please email: ncei.info@noaa.gov