(Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605
Natural Remanent Magnetization (NRM) was measured for regularly spaced samples from the 620-m-thick, lower middle Eocene to upper Maestrichtian section of DSDP Site 605. The total NRM of the Eocene chalks was too low (5-50 µA/m) to establish a reliable magnetic polarity stratigraphy. However, the re...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.788910 2023-05-15T17:35:30+02:00 (Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 Bruins, J van Hinte, Jan E Zijderveld, J D A LATITUDE: 38.742200 * LONGITUDE: -72.609200 * DATE/TIME START: 1983-06-11T00:00:00 * DATE/TIME END: 1983-06-11T00:00:00 * MINIMUM DEPTH, sediment/rock: 563.80 m * MAXIMUM DEPTH, sediment/rock: 808.26 m 1987-09-21 text/tab-separated-values, 190 data points https://doi.pangaea.de/10.1594/PANGAEA.788910 https://doi.org/10.1594/PANGAEA.788910 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.788910 https://doi.org/10.1594/PANGAEA.788910 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Bruins, J; van Hinte, Jan E; Zijderveld, J D A (1987): Upper Cretaceous to Paleocene magnetostratigraphy of Deep Sea Drilling Project Site 605, Northwest Atlantic. In: van Hinte, JE; Wise, SW Jr; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 93, 881-890, https://doi.org/10.2973/dsdp.proc.93.132.1987 93-605 Age model Boundary description Calculated see reference(s) Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg93 North Atlantic Sample code/label Sample code/label 2 Sample comment Sedimentation rate Dataset 1987 ftpangaea https://doi.org/10.1594/PANGAEA.788910 https://doi.org/10.2973/dsdp.proc.93.132.1987 2023-01-20T08:55:16Z Natural Remanent Magnetization (NRM) was measured for regularly spaced samples from the 620-m-thick, lower middle Eocene to upper Maestrichtian section of DSDP Site 605. The total NRM of the Eocene chalks was too low (5-50 µA/m) to establish a reliable magnetic polarity stratigraphy. However, the results from the somewhat more clayrich Paleocene-upper Maestrichtian section are useful. A fourfold quality classification of the results of progressive demagnetization studies aided in determining the polarity of the original remanence. Two types (1 and 2a) showed a Characteristic Remanent Magnetization (ChRM) direction with reversed and normal polarity, respectively; the third type (2b) can be interpreted as having a reversed ChRM, which could not be cleaned, whereas the fourth type (3) is considered to be unreliable. The Site 605 magnetic polarity stratigraphy compares well with published sections, adding important detail to the correlation with planktonic microfossil zones and, hence, to the resolution of this portion of the time scale (C24-C32 on the Berggren et al., 1985, scale). The Cretaceous/Tertiary boundary occurs in a reversed polarity zone that has been correlated with Subchron C29r. We suspect the presence of an unconformity at the boundary between lithostratigraphic Units Va and IV a location which is also the level of Reflection Horizon A*. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-72.609200,-72.609200,38.742200,38.742200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
93-605 Age model Boundary description Calculated see reference(s) Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg93 North Atlantic Sample code/label Sample code/label 2 Sample comment Sedimentation rate |
spellingShingle |
93-605 Age model Boundary description Calculated see reference(s) Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg93 North Atlantic Sample code/label Sample code/label 2 Sample comment Sedimentation rate Bruins, J van Hinte, Jan E Zijderveld, J D A (Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 |
topic_facet |
93-605 Age model Boundary description Calculated see reference(s) Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg93 North Atlantic Sample code/label Sample code/label 2 Sample comment Sedimentation rate |
description |
Natural Remanent Magnetization (NRM) was measured for regularly spaced samples from the 620-m-thick, lower middle Eocene to upper Maestrichtian section of DSDP Site 605. The total NRM of the Eocene chalks was too low (5-50 µA/m) to establish a reliable magnetic polarity stratigraphy. However, the results from the somewhat more clayrich Paleocene-upper Maestrichtian section are useful. A fourfold quality classification of the results of progressive demagnetization studies aided in determining the polarity of the original remanence. Two types (1 and 2a) showed a Characteristic Remanent Magnetization (ChRM) direction with reversed and normal polarity, respectively; the third type (2b) can be interpreted as having a reversed ChRM, which could not be cleaned, whereas the fourth type (3) is considered to be unreliable. The Site 605 magnetic polarity stratigraphy compares well with published sections, adding important detail to the correlation with planktonic microfossil zones and, hence, to the resolution of this portion of the time scale (C24-C32 on the Berggren et al., 1985, scale). The Cretaceous/Tertiary boundary occurs in a reversed polarity zone that has been correlated with Subchron C29r. We suspect the presence of an unconformity at the boundary between lithostratigraphic Units Va and IV a location which is also the level of Reflection Horizon A*. |
format |
Dataset |
author |
Bruins, J van Hinte, Jan E Zijderveld, J D A |
author_facet |
Bruins, J van Hinte, Jan E Zijderveld, J D A |
author_sort |
Bruins, J |
title |
(Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 |
title_short |
(Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 |
title_full |
(Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 |
title_fullStr |
(Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 |
title_full_unstemmed |
(Table 1) Magnetozone boundaries, age and sedimentation rate at DSDP Hole 93-605 |
title_sort |
(table 1) magnetozone boundaries, age and sedimentation rate at dsdp hole 93-605 |
publisher |
PANGAEA |
publishDate |
1987 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.788910 https://doi.org/10.1594/PANGAEA.788910 |
op_coverage |
LATITUDE: 38.742200 * LONGITUDE: -72.609200 * DATE/TIME START: 1983-06-11T00:00:00 * DATE/TIME END: 1983-06-11T00:00:00 * MINIMUM DEPTH, sediment/rock: 563.80 m * MAXIMUM DEPTH, sediment/rock: 808.26 m |
long_lat |
ENVELOPE(-72.609200,-72.609200,38.742200,38.742200) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Bruins, J; van Hinte, Jan E; Zijderveld, J D A (1987): Upper Cretaceous to Paleocene magnetostratigraphy of Deep Sea Drilling Project Site 605, Northwest Atlantic. In: van Hinte, JE; Wise, SW Jr; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 93, 881-890, https://doi.org/10.2973/dsdp.proc.93.132.1987 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.788910 https://doi.org/10.1594/PANGAEA.788910 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.788910 https://doi.org/10.2973/dsdp.proc.93.132.1987 |
_version_ |
1766134683163164672 |