(Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A
Fifty-seven white mica clasts were separated from five samples taken from near the bases of turbidites ranging in age from early Albian to middle Eocene. Twenty two (39%) of the micas have ages between 260 and 340 Ma and five (9%) have older ages (~400-600 Ma). The former age range is characteristic...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.776711 2024-09-15T18:10:13+00:00 (Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A Wilson, R C L Hiscott, Richard N LATITUDE: 45.405330 * LONGITUDE: -44.785830 * DATE/TIME START: 2003-02-09T16:20:00 * DATE/TIME END: 2003-07-16T08:44:00 * MINIMUM DEPTH, sediment/rock: 869.4 m * MAXIMUM DEPTH, sediment/rock: 1648.3 m 2007 text/tab-separated-values, 228 data points https://doi.pangaea.de/10.1594/PANGAEA.776711 https://doi.org/10.1594/PANGAEA.776711 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.776711 https://doi.org/10.1594/PANGAEA.776711 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Wilson, R C L; Hiscott, Richard N (2007): Ar/Ar dating of white mica clasts in early to late postrift sediments sampled during ODP Leg 210 off Newfoundland. In: Tucholke, BE; Sibuet, J-C; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 210, 1-13, https://doi.org/10.2973/odp.proc.sr.210.106.2007 210-1276A AGE 40Ar/39Ar Argon-Argon dated dated standard deviation Age model biostratigraphy DEPTH sediment/rock DRILL Drilling/drill rig Epoch Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP Sample code/label dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.77671110.2973/odp.proc.sr.210.106.2007 2024-08-21T00:02:27Z Fifty-seven white mica clasts were separated from five samples taken from near the bases of turbidites ranging in age from early Albian to middle Eocene. Twenty two (39%) of the micas have ages between 260 and 340 Ma and five (9%) have older ages (~400-600 Ma). The former age range is characteristic of the North American Alleghenian orogeny and the Iberian Variscan orogeny. The latter range is characteristic of the North American Acadian orogeny and older basement rocks in the Grand Banks and Newfoundland areas. Both age ranges are present in the middle Eocene sample, but only the younger range occurs in the middle Albian sample. This difference could be a sampling artifact. If this is not the case, then the most likely explanation is that the Acadian-aged micas within the Meguma Zone underlying the Grand Banks were totally reset by Alleghenian reactivation of the zone, a feature which occurs extensively in Nova Scotia. The addition of Acadian-aged micas in the middle Eocene sample may reflect a change in sediment provenance as drainage systems unrelated to rift topography developed. With the exception of one clast dated at 186 Ma, the 12 other micas obtained from the upper Paleocene sample yielded ages between 55 and 74 Ma, with 7 falling within ±2 m.y. of the 57-Ma age of the sample indicated by the biostratigraphic age-depth plot for Site 1276. This, together with the volcaniclastic content of the sample, indicates an input from near-contemporaneous volcanism. The nearest known occurrences of near-contemporaneous late Paleocene volcanism that could have produced white micas are in Greenland and Portugal, some 2000 and 1500 km distant, respectively, from Site 1276 during the Paleocene. However, ages of volcanism in these areas indicate that they could probably not be sources of micas younger than 60 m.y., which suggests some as-yet unknown volcanic source in the North Atlantic area. Accumulation in the Grand Banks area of airborne-transported volcaniclastic material from eruptions of slightly different ages, ... Dataset Greenland Newfoundland North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-44.785830,-44.785830,45.405330,45.405330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
210-1276A AGE 40Ar/39Ar Argon-Argon dated dated standard deviation Age model biostratigraphy DEPTH sediment/rock DRILL Drilling/drill rig Epoch Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP Sample code/label |
spellingShingle |
210-1276A AGE 40Ar/39Ar Argon-Argon dated dated standard deviation Age model biostratigraphy DEPTH sediment/rock DRILL Drilling/drill rig Epoch Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP Sample code/label Wilson, R C L Hiscott, Richard N (Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A |
topic_facet |
210-1276A AGE 40Ar/39Ar Argon-Argon dated dated standard deviation Age model biostratigraphy DEPTH sediment/rock DRILL Drilling/drill rig Epoch Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP Sample code/label |
description |
Fifty-seven white mica clasts were separated from five samples taken from near the bases of turbidites ranging in age from early Albian to middle Eocene. Twenty two (39%) of the micas have ages between 260 and 340 Ma and five (9%) have older ages (~400-600 Ma). The former age range is characteristic of the North American Alleghenian orogeny and the Iberian Variscan orogeny. The latter range is characteristic of the North American Acadian orogeny and older basement rocks in the Grand Banks and Newfoundland areas. Both age ranges are present in the middle Eocene sample, but only the younger range occurs in the middle Albian sample. This difference could be a sampling artifact. If this is not the case, then the most likely explanation is that the Acadian-aged micas within the Meguma Zone underlying the Grand Banks were totally reset by Alleghenian reactivation of the zone, a feature which occurs extensively in Nova Scotia. The addition of Acadian-aged micas in the middle Eocene sample may reflect a change in sediment provenance as drainage systems unrelated to rift topography developed. With the exception of one clast dated at 186 Ma, the 12 other micas obtained from the upper Paleocene sample yielded ages between 55 and 74 Ma, with 7 falling within ±2 m.y. of the 57-Ma age of the sample indicated by the biostratigraphic age-depth plot for Site 1276. This, together with the volcaniclastic content of the sample, indicates an input from near-contemporaneous volcanism. The nearest known occurrences of near-contemporaneous late Paleocene volcanism that could have produced white micas are in Greenland and Portugal, some 2000 and 1500 km distant, respectively, from Site 1276 during the Paleocene. However, ages of volcanism in these areas indicate that they could probably not be sources of micas younger than 60 m.y., which suggests some as-yet unknown volcanic source in the North Atlantic area. Accumulation in the Grand Banks area of airborne-transported volcaniclastic material from eruptions of slightly different ages, ... |
format |
Dataset |
author |
Wilson, R C L Hiscott, Richard N |
author_facet |
Wilson, R C L Hiscott, Richard N |
author_sort |
Wilson, R C L |
title |
(Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A |
title_short |
(Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A |
title_full |
(Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A |
title_fullStr |
(Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A |
title_full_unstemmed |
(Table T1) Ages of white mica clasts in core samples of ODP Hole 210-1276A |
title_sort |
(table t1) ages of white mica clasts in core samples of odp hole 210-1276a |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.776711 https://doi.org/10.1594/PANGAEA.776711 |
op_coverage |
LATITUDE: 45.405330 * LONGITUDE: -44.785830 * DATE/TIME START: 2003-02-09T16:20:00 * DATE/TIME END: 2003-07-16T08:44:00 * MINIMUM DEPTH, sediment/rock: 869.4 m * MAXIMUM DEPTH, sediment/rock: 1648.3 m |
long_lat |
ENVELOPE(-44.785830,-44.785830,45.405330,45.405330) |
genre |
Greenland Newfoundland North Atlantic |
genre_facet |
Greenland Newfoundland North Atlantic |
op_source |
Supplement to: Wilson, R C L; Hiscott, Richard N (2007): Ar/Ar dating of white mica clasts in early to late postrift sediments sampled during ODP Leg 210 off Newfoundland. In: Tucholke, BE; Sibuet, J-C; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 210, 1-13, https://doi.org/10.2973/odp.proc.sr.210.106.2007 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.776711 https://doi.org/10.1594/PANGAEA.776711 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.77671110.2973/odp.proc.sr.210.106.2007 |
_version_ |
1810447816650129408 |