(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments
Ocean Drilling Program Hole 990A penetrated 131 m of subaerially emplaced Paleocene flood basalts on the Southeast Greenland margin with a recovery of 74%. Shipboard P-wave velocity (Vp), density, and magnetic susceptibility were measured with 2- to 15-cm intervals on the core. Individual flow units...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.804639 2024-09-15T18:09:53+00:00 (Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments Planke, Sverre Cerney, Brian Bücker, Christian J Nilsen, Odd LATITUDE: 63.472800 * LONGITUDE: -39.780000 * DATE/TIME START: 1995-09-20T17:45:00 * DATE/TIME END: 1995-10-01T13:00:00 * MINIMUM DEPTH, sediment/rock: 232.10 m * MAXIMUM DEPTH, sediment/rock: 313.20 m 1999 text/tab-separated-values, 503 data points https://doi.pangaea.de/10.1594/PANGAEA.804639 https://doi.org/10.1594/PANGAEA.804639 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.804639 https://doi.org/10.1594/PANGAEA.804639 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Planke, Sverre; Cerney, Brian; Bücker, Christian J; Nilsen, Odd (1999): Alteration effects on petrophysical properties of subaerial flood basalts: Site 990, Southeast Greenland margin. In: Larsen, HC; Duncan, RA; Allan, JF; Brooks, K (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 163, 1-12, https://doi.org/10.2973/odp.proc.sr.163.105.1999 163-990A Aluminium oxide Bartington MS2 magnetic susceptibility meter Calcium oxide Calculated Clay minerals Clinopyroxene Density dry bulk wet bulk Depth relative sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Factor Greenland Sea Hamilton frame velocimeter Boyce (1976) Hysteresis saturation remanence per unit volume Iron oxide Fe2O3 Joides Resolution Leg163 Lithologic unit/sequence Loss on ignition MAG Magnesium oxide Magnetic susceptibility Magnetometer Manganese oxide Minerals Number Ocean Drilling Program ODP Olivine Phosphorus pentoxide Porosity Potassium oxide Sample code/label Silicon dioxide Sodium oxide dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.80463910.2973/odp.proc.sr.163.105.1999 2024-07-24T02:31:32Z Ocean Drilling Program Hole 990A penetrated 131 m of subaerially emplaced Paleocene flood basalts on the Southeast Greenland margin with a recovery of 74%. Shipboard P-wave velocity (Vp), density, and magnetic susceptibility were measured with 2- to 15-cm intervals on the core. Individual flow units were divided into four zones based on the observed petrophysical characteristics. From the top, these are Zone I (<7 m thick with a Vp of ~2.5 km/s), Zone II (3-5 m thick with a strongly increasing Vp from 2.5 to 5.5 km/s), Zone III (up to 20 m thick with a Vp of ~5.5-6.0 km/s), and Zone IV (<2 m thick with a strongly decreasing Vp from 6.0 to 2.5 km/s). Eighteen samples were selected from three of the fourteen penetrated basalt units for geochemical, petrological, and petrophysical studies focusing on the altered, low-velocity upper lava Zones I and II. Zone I is strongly altered to >50% clay minerals (smectite) and iron hydroxides, and the petrophysical properties are primarily determined by the clay properties. Zone II is intermediately altered with 5%-20% clay minerals, where the petrophysical properties are a function of both the degree of alteration and porosity variations. Shipboard and shore-based measurements of the same samples show that storage permanently lowers the elastic moduli of basalt from Zones I to III. This is related to the presence of even small quantities of swelling clays. The data show that alteration processes are important in determining the overall seismic properties of flood basalt constructions. The degree and depth of alteration is dependent on the primary lava flow emplacement structures and environment. Thus, the interplay of primary emplacement and secondary alteration structures determine the elastic properties of basalt piles. Rock property theories for sand-clay systems are further used to model the physical property variations in these altered crystalline rocks. Dataset Greenland Greenland Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-39.780000,-39.780000,63.472800,63.472800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
163-990A Aluminium oxide Bartington MS2 magnetic susceptibility meter Calcium oxide Calculated Clay minerals Clinopyroxene Density dry bulk wet bulk Depth relative sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Factor Greenland Sea Hamilton frame velocimeter Boyce (1976) Hysteresis saturation remanence per unit volume Iron oxide Fe2O3 Joides Resolution Leg163 Lithologic unit/sequence Loss on ignition MAG Magnesium oxide Magnetic susceptibility Magnetometer Manganese oxide Minerals Number Ocean Drilling Program ODP Olivine Phosphorus pentoxide Porosity Potassium oxide Sample code/label Silicon dioxide Sodium oxide |
spellingShingle |
163-990A Aluminium oxide Bartington MS2 magnetic susceptibility meter Calcium oxide Calculated Clay minerals Clinopyroxene Density dry bulk wet bulk Depth relative sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Factor Greenland Sea Hamilton frame velocimeter Boyce (1976) Hysteresis saturation remanence per unit volume Iron oxide Fe2O3 Joides Resolution Leg163 Lithologic unit/sequence Loss on ignition MAG Magnesium oxide Magnetic susceptibility Magnetometer Manganese oxide Minerals Number Ocean Drilling Program ODP Olivine Phosphorus pentoxide Porosity Potassium oxide Sample code/label Silicon dioxide Sodium oxide Planke, Sverre Cerney, Brian Bücker, Christian J Nilsen, Odd (Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments |
topic_facet |
163-990A Aluminium oxide Bartington MS2 magnetic susceptibility meter Calcium oxide Calculated Clay minerals Clinopyroxene Density dry bulk wet bulk Depth relative sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Factor Greenland Sea Hamilton frame velocimeter Boyce (1976) Hysteresis saturation remanence per unit volume Iron oxide Fe2O3 Joides Resolution Leg163 Lithologic unit/sequence Loss on ignition MAG Magnesium oxide Magnetic susceptibility Magnetometer Manganese oxide Minerals Number Ocean Drilling Program ODP Olivine Phosphorus pentoxide Porosity Potassium oxide Sample code/label Silicon dioxide Sodium oxide |
description |
Ocean Drilling Program Hole 990A penetrated 131 m of subaerially emplaced Paleocene flood basalts on the Southeast Greenland margin with a recovery of 74%. Shipboard P-wave velocity (Vp), density, and magnetic susceptibility were measured with 2- to 15-cm intervals on the core. Individual flow units were divided into four zones based on the observed petrophysical characteristics. From the top, these are Zone I (<7 m thick with a Vp of ~2.5 km/s), Zone II (3-5 m thick with a strongly increasing Vp from 2.5 to 5.5 km/s), Zone III (up to 20 m thick with a Vp of ~5.5-6.0 km/s), and Zone IV (<2 m thick with a strongly decreasing Vp from 6.0 to 2.5 km/s). Eighteen samples were selected from three of the fourteen penetrated basalt units for geochemical, petrological, and petrophysical studies focusing on the altered, low-velocity upper lava Zones I and II. Zone I is strongly altered to >50% clay minerals (smectite) and iron hydroxides, and the petrophysical properties are primarily determined by the clay properties. Zone II is intermediately altered with 5%-20% clay minerals, where the petrophysical properties are a function of both the degree of alteration and porosity variations. Shipboard and shore-based measurements of the same samples show that storage permanently lowers the elastic moduli of basalt from Zones I to III. This is related to the presence of even small quantities of swelling clays. The data show that alteration processes are important in determining the overall seismic properties of flood basalt constructions. The degree and depth of alteration is dependent on the primary lava flow emplacement structures and environment. Thus, the interplay of primary emplacement and secondary alteration structures determine the elastic properties of basalt piles. Rock property theories for sand-clay systems are further used to model the physical property variations in these altered crystalline rocks. |
format |
Dataset |
author |
Planke, Sverre Cerney, Brian Bücker, Christian J Nilsen, Odd |
author_facet |
Planke, Sverre Cerney, Brian Bücker, Christian J Nilsen, Odd |
author_sort |
Planke, Sverre |
title |
(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments |
title_short |
(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments |
title_full |
(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments |
title_fullStr |
(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments |
title_full_unstemmed |
(Table 2) Petrophysical, petrological, and geochemical characteristics of ODP Hole 163-990A sediments |
title_sort |
(table 2) petrophysical, petrological, and geochemical characteristics of odp hole 163-990a sediments |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.804639 https://doi.org/10.1594/PANGAEA.804639 |
op_coverage |
LATITUDE: 63.472800 * LONGITUDE: -39.780000 * DATE/TIME START: 1995-09-20T17:45:00 * DATE/TIME END: 1995-10-01T13:00:00 * MINIMUM DEPTH, sediment/rock: 232.10 m * MAXIMUM DEPTH, sediment/rock: 313.20 m |
long_lat |
ENVELOPE(-39.780000,-39.780000,63.472800,63.472800) |
genre |
Greenland Greenland Sea |
genre_facet |
Greenland Greenland Sea |
op_source |
Supplement to: Planke, Sverre; Cerney, Brian; Bücker, Christian J; Nilsen, Odd (1999): Alteration effects on petrophysical properties of subaerial flood basalts: Site 990, Southeast Greenland margin. In: Larsen, HC; Duncan, RA; Allan, JF; Brooks, K (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 163, 1-12, https://doi.org/10.2973/odp.proc.sr.163.105.1999 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.804639 https://doi.org/10.1594/PANGAEA.804639 |
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.80463910.2973/odp.proc.sr.163.105.1999 |
_version_ |
1810447470321205248 |