Core data of orbitally tuned Sr-isotope chemostratigraphy for the Late Middle and Late Miocene
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
1999
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| _version_ | 1867170901830664192 |
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| author | Martin, Ellen E Shackleton, Nicholas J Zachos, James C Flower, Benjamin P |
| author_facet | Martin, Ellen E Shackleton, Nicholas J Zachos, James C Flower, Benjamin P |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We present a Sr chemostratigraphic reference section for the late middle to late Miocene (14-5 Ma) from Ocean Drilling Program site 926 on the Ceara Rise. This site combines a precise, orbitally tuned timescale with a high sedimentation rate (15 m/m.y.), continuous deposition, and excellent biostratigraphic control. The Sr isotope curve is based on measurements of cleaned, planktonic foraminifera at 100-200 kyr sample intervals and it illustrates periods of rapid change in 87Sr/86Sr alternating with periods of little change. Chemostratigraphically-defined ages for these intervals can be determined within +/-0.8 m.y. and +/-1.6 m.y. respectively. There is excellent correlation with the published curve for site 588 [Hodell and Woodruff, 1994]; however the curve for site 747 [Oslick et al., 1994] exhibits less structure, which may be due to small errors in age estimates related to slow sedimentation rates, high-latitude fauna and an interval of complicated magnetics. Late Miocene data compare favorably with data from site 758 [Farrell et al., 1995]. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_735728 |
| institution | PANGAEA |
| language | en |
| publishDate | 1999 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Core data of orbitally tuned Sr-isotope chemostratigraphy for the Late Middle and Late Miocene Martin, Ellen E Shackleton, Nicholas J Zachos, James C Flower, Benjamin P 154-926; Age, calculated calendar years; Age model; COMPCORE; Composite Core; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Joides Resolution; Leg154; North Atlantic Ocean; Ocean Drilling Program; ODP; Sample code/label; Strontium-87/Strontium-86 ratio We present a Sr chemostratigraphic reference section for the late middle to late Miocene (14-5 Ma) from Ocean Drilling Program site 926 on the Ceara Rise. This site combines a precise, orbitally tuned timescale with a high sedimentation rate (15 m/m.y.), continuous deposition, and excellent biostratigraphic control. The Sr isotope curve is based on measurements of cleaned, planktonic foraminifera at 100-200 kyr sample intervals and it illustrates periods of rapid change in 87Sr/86Sr alternating with periods of little change. Chemostratigraphically-defined ages for these intervals can be determined within +/-0.8 m.y. and +/-1.6 m.y. respectively. There is excellent correlation with the published curve for site 588 [Hodell and Woodruff, 1994]; however the curve for site 747 [Oslick et al., 1994] exhibits less structure, which may be due to small errors in age estimates related to slow sedimentation rates, high-latitude fauna and an interval of complicated magnetics. Late Miocene data compare favorably with data from site 758 [Farrell et al., 1995]. |
| title | Core data of orbitally tuned Sr-isotope chemostratigraphy for the Late Middle and Late Miocene |
| topic | 154-926; Age, calculated calendar years; Age model; COMPCORE; Composite Core; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Joides Resolution; Leg154; North Atlantic Ocean; Ocean Drilling Program; ODP; Sample code/label; Strontium-87/Strontium-86 ratio |
| url | https://doi.org/10.1594/PANGAEA.735728 |