(Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ...
Fission track ages of individual crystals of detrital apatite and sphene separated from early Eocene and Paleocene sandstones at Site 555 indicate the contribution of detritus from source rocks of at least three distinct age groups. A major group of Tertiary (56 ± 3 m.y.) apatite ages is compatible...
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Online Access: | https://dx.doi.org/10.1594/pangaea.806942 https://doi.pangaea.de/10.1594/PANGAEA.806942 |
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ftdatacite:10.1594/pangaea.806942 2024-09-15T18:10:01+00:00 (Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... Duddy, I R Gleadow, A J W Keene, John B 1984 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.806942 https://doi.pangaea.de/10.1594/PANGAEA.806942 en eng PANGAEA https://dx.doi.org/10.2973/dsdp.proc.81.127.1984 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Sample code/label Sample code/label 2 Depth, top/min Depth, bottom/max DEPTH, sediment/rock Sample, optional label/labor no Mineral name Grains, counted/analyzed Parameter Number Fission-tracks Fission-tracks, induced, density Coefficient Age, dated Age, dated standard deviation Uranium Drilling/drill rig DSDP/ODP/IODP sample designation Calculated Leg81 Glomar Challenger Deep Sea Drilling Project DSDP dataset Supplementary Dataset Dataset 1984 ftdatacite https://doi.org/10.1594/pangaea.80694210.2973/dsdp.proc.81.127.1984 2024-08-01T11:00:37Z Fission track ages of individual crystals of detrital apatite and sphene separated from early Eocene and Paleocene sandstones at Site 555 indicate the contribution of detritus from source rocks of at least three distinct age groups. A major group of Tertiary (56 ± 3 m.y.) apatite ages is compatible with either contemporaneous or near contemporaneous volcanism or rapid unroofing of high level intrusives like those identified previously on Rockall Island (Jones et al., 1972) and Greenland (Gleadow and Brooks, 1979). Cretaceous (100 ± 20 m.y.) apatite ages are consistent with known high level microgabbroic intrusives on Helen's Reef (Roberts et al., 1974). Such apatite ages could also be derived from basement rocks of very ancient terrains, especially around rifted continental margins where low level heating or uplift has affected the fission track ages of apatites (Gleadow, 1978). Minor contributions were also identified from a terrain with apatite ages around 150 to 200 m.y. Similar ages are known from ... : Sediment depth is given in mbsf. All track densities expressed as for internal surfaces. Neutron dosimetry for reference glass SRM612: B = 6.005 * 109 neutrons/track, Zeta = 360 ± 10. Equivalent to NBS Cu dosimetry via reference glass SRM962. ... Dataset Greenland DataCite |
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ftdatacite |
language |
English |
topic |
Sample code/label Sample code/label 2 Depth, top/min Depth, bottom/max DEPTH, sediment/rock Sample, optional label/labor no Mineral name Grains, counted/analyzed Parameter Number Fission-tracks Fission-tracks, induced, density Coefficient Age, dated Age, dated standard deviation Uranium Drilling/drill rig DSDP/ODP/IODP sample designation Calculated Leg81 Glomar Challenger Deep Sea Drilling Project DSDP |
spellingShingle |
Sample code/label Sample code/label 2 Depth, top/min Depth, bottom/max DEPTH, sediment/rock Sample, optional label/labor no Mineral name Grains, counted/analyzed Parameter Number Fission-tracks Fission-tracks, induced, density Coefficient Age, dated Age, dated standard deviation Uranium Drilling/drill rig DSDP/ODP/IODP sample designation Calculated Leg81 Glomar Challenger Deep Sea Drilling Project DSDP Duddy, I R Gleadow, A J W Keene, John B (Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... |
topic_facet |
Sample code/label Sample code/label 2 Depth, top/min Depth, bottom/max DEPTH, sediment/rock Sample, optional label/labor no Mineral name Grains, counted/analyzed Parameter Number Fission-tracks Fission-tracks, induced, density Coefficient Age, dated Age, dated standard deviation Uranium Drilling/drill rig DSDP/ODP/IODP sample designation Calculated Leg81 Glomar Challenger Deep Sea Drilling Project DSDP |
description |
Fission track ages of individual crystals of detrital apatite and sphene separated from early Eocene and Paleocene sandstones at Site 555 indicate the contribution of detritus from source rocks of at least three distinct age groups. A major group of Tertiary (56 ± 3 m.y.) apatite ages is compatible with either contemporaneous or near contemporaneous volcanism or rapid unroofing of high level intrusives like those identified previously on Rockall Island (Jones et al., 1972) and Greenland (Gleadow and Brooks, 1979). Cretaceous (100 ± 20 m.y.) apatite ages are consistent with known high level microgabbroic intrusives on Helen's Reef (Roberts et al., 1974). Such apatite ages could also be derived from basement rocks of very ancient terrains, especially around rifted continental margins where low level heating or uplift has affected the fission track ages of apatites (Gleadow, 1978). Minor contributions were also identified from a terrain with apatite ages around 150 to 200 m.y. Similar ages are known from ... : Sediment depth is given in mbsf. All track densities expressed as for internal surfaces. Neutron dosimetry for reference glass SRM612: B = 6.005 * 109 neutrons/track, Zeta = 360 ± 10. Equivalent to NBS Cu dosimetry via reference glass SRM962. ... |
format |
Dataset |
author |
Duddy, I R Gleadow, A J W Keene, John B |
author_facet |
Duddy, I R Gleadow, A J W Keene, John B |
author_sort |
Duddy, I R |
title |
(Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... |
title_short |
(Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... |
title_full |
(Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... |
title_fullStr |
(Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... |
title_full_unstemmed |
(Table 2) Fission track ages of apatite and sphene from Paleogene sediments at DSDP Hole 81-555 ... |
title_sort |
(table 2) fission track ages of apatite and sphene from paleogene sediments at dsdp hole 81-555 ... |
publisher |
PANGAEA |
publishDate |
1984 |
url |
https://dx.doi.org/10.1594/pangaea.806942 https://doi.pangaea.de/10.1594/PANGAEA.806942 |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
https://dx.doi.org/10.2973/dsdp.proc.81.127.1984 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.80694210.2973/dsdp.proc.81.127.1984 |
_version_ |
1810447616041811968 |