(Table 1) Physical properties at DSDP Hole 50-416A
From 661 to 880 m beneath the seafloor at DSDP Sites 370 and 416 are Albian to Barremian claystone with some limestone, sandstone, and siltstone. Compressional-wave velocities ranged from 1.70 to 4.37 km/s, with an average in situ vertical velocity of 1.93 km/s. From 880 to 1430 m are Hauterivian to...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.810321 2023-05-15T17:37:12+02:00 (Table 1) Physical properties at DSDP Hole 50-416A Boyce, Robert E LATITUDE: 32.836300 * LONGITUDE: -10.801000 * DATE/TIME START: 1976-09-29T00:00:00 * DATE/TIME END: 1976-09-29T00:00:00 * MINIMUM DEPTH, sediment/rock: 754.30 m * MAXIMUM DEPTH, sediment/rock: 1615.95 m 1984-04-17 text/tab-separated-values, 2563 data points https://doi.pangaea.de/10.1594/PANGAEA.810321 https://doi.org/10.1594/PANGAEA.810321 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.810321 https://doi.org/10.1594/PANGAEA.810321 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Boyce, Robert E (1984): Laboratory-determined sound velocity, porosity, wet-bulk density, acoustic impedance, acoustic anisotropy, and reflection coefficients for Cretaceous-Jurassic turbidite sequences at Deep Sea Drilling Project Sites 370 and 416 off the Coast of Morocco. In: Hay, WW; Sibuet, J-C; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 75, 1229-1244, https://doi.org/10.2973/dsdp.proc.75.148.1984 50-416A Calculated see reference(s) CFA Color description Comment Continuous Flow Analysis Deep Sea Drilling Project Density wet bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Gamma-ray attenuation porosity evaluator (GRAPE) Glomar Challenger Impedance specific Leg50 Lithology/composition/facies North Atlantic Porosity Sample code/label Sonic velocity Temperature technical Velocity compressional wave anisotropy Water content wet mass Dataset 1984 ftpangaea https://doi.org/10.1594/PANGAEA.810321 https://doi.org/10.2973/dsdp.proc.75.148.1984 2023-01-20T09:01:00Z From 661 to 880 m beneath the seafloor at DSDP Sites 370 and 416 are Albian to Barremian claystone with some limestone, sandstone, and siltstone. Compressional-wave velocities ranged from 1.70 to 4.37 km/s, with an average in situ vertical velocity of 1.93 km/s. From 880 to 1430 m are Hauterivian to Valanginian turbidites of alternating graded calcareous and quartzose cycles from siltstone or fine sandstone to mudstone. Compressional-wave velocities range from 1.80 to 4.96 km/s with an average in situ velocity of 2.61 km/s. From 1430 to 1624 m are early Valanginian to Tithonian (Kimmeridgian?) turbidites, with alternating quartzose siltstone grading to mudstone cycles with hard micritic limestone and calcarenite (calciturbidites). Compressional-wave velocities range from 2.26 to 5.7 km/s, with an average in situ vertical velocity of 3.25 km/s. Acoustic anisotropy is 0 to 30% faster parallel to bedding in Cretaceous to Tithonian sandstone-siltstone turbidites in mudstone and minor limestone from 661 to 1624 m below the seafloor. Between 2.0(?) km/s and 4.2(?) km/s, anisotropy becomes particularly significant (below 1178 m), where the anisotropy is about + 0.4 km/s or greater. The mudstone, softer sandstone, and softer siltstone tend to have velocities around 2.0 to 2.5 km/s; the cemented sandstone and limestone cluster around 2.5 km/s to 4.2 km/s; thus the relative percentage anisotropy is greater for lower-velocity lithologies. Above 4.2(?) km/s, the well-cemented sandstone and limestone tend to have a smaller (less than + 0.4 km/s) absolute anisotropy, and many samples are nearly isotropic. These physical property data are separated into depth plots for (1) mudstone, (2) siltstone (3) sandstone, (4) marlstone, and (5) limestone. The mudstone's porosity and wet-bulk density curves versus depth are slightly higher and lower, respectively, than similar porosity and wet-bulk density curves summarized in Hamilton (1976). These differences could be some combination of (1) differences in laboratory methods; (2) age, ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-10.801000,-10.801000,32.836300,32.836300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
50-416A Calculated see reference(s) CFA Color description Comment Continuous Flow Analysis Deep Sea Drilling Project Density wet bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Gamma-ray attenuation porosity evaluator (GRAPE) Glomar Challenger Impedance specific Leg50 Lithology/composition/facies North Atlantic Porosity Sample code/label Sonic velocity Temperature technical Velocity compressional wave anisotropy Water content wet mass |
spellingShingle |
50-416A Calculated see reference(s) CFA Color description Comment Continuous Flow Analysis Deep Sea Drilling Project Density wet bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Gamma-ray attenuation porosity evaluator (GRAPE) Glomar Challenger Impedance specific Leg50 Lithology/composition/facies North Atlantic Porosity Sample code/label Sonic velocity Temperature technical Velocity compressional wave anisotropy Water content wet mass Boyce, Robert E (Table 1) Physical properties at DSDP Hole 50-416A |
topic_facet |
50-416A Calculated see reference(s) CFA Color description Comment Continuous Flow Analysis Deep Sea Drilling Project Density wet bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Gamma-ray attenuation porosity evaluator (GRAPE) Glomar Challenger Impedance specific Leg50 Lithology/composition/facies North Atlantic Porosity Sample code/label Sonic velocity Temperature technical Velocity compressional wave anisotropy Water content wet mass |
description |
From 661 to 880 m beneath the seafloor at DSDP Sites 370 and 416 are Albian to Barremian claystone with some limestone, sandstone, and siltstone. Compressional-wave velocities ranged from 1.70 to 4.37 km/s, with an average in situ vertical velocity of 1.93 km/s. From 880 to 1430 m are Hauterivian to Valanginian turbidites of alternating graded calcareous and quartzose cycles from siltstone or fine sandstone to mudstone. Compressional-wave velocities range from 1.80 to 4.96 km/s with an average in situ velocity of 2.61 km/s. From 1430 to 1624 m are early Valanginian to Tithonian (Kimmeridgian?) turbidites, with alternating quartzose siltstone grading to mudstone cycles with hard micritic limestone and calcarenite (calciturbidites). Compressional-wave velocities range from 2.26 to 5.7 km/s, with an average in situ vertical velocity of 3.25 km/s. Acoustic anisotropy is 0 to 30% faster parallel to bedding in Cretaceous to Tithonian sandstone-siltstone turbidites in mudstone and minor limestone from 661 to 1624 m below the seafloor. Between 2.0(?) km/s and 4.2(?) km/s, anisotropy becomes particularly significant (below 1178 m), where the anisotropy is about + 0.4 km/s or greater. The mudstone, softer sandstone, and softer siltstone tend to have velocities around 2.0 to 2.5 km/s; the cemented sandstone and limestone cluster around 2.5 km/s to 4.2 km/s; thus the relative percentage anisotropy is greater for lower-velocity lithologies. Above 4.2(?) km/s, the well-cemented sandstone and limestone tend to have a smaller (less than + 0.4 km/s) absolute anisotropy, and many samples are nearly isotropic. These physical property data are separated into depth plots for (1) mudstone, (2) siltstone (3) sandstone, (4) marlstone, and (5) limestone. The mudstone's porosity and wet-bulk density curves versus depth are slightly higher and lower, respectively, than similar porosity and wet-bulk density curves summarized in Hamilton (1976). These differences could be some combination of (1) differences in laboratory methods; (2) age, ... |
format |
Dataset |
author |
Boyce, Robert E |
author_facet |
Boyce, Robert E |
author_sort |
Boyce, Robert E |
title |
(Table 1) Physical properties at DSDP Hole 50-416A |
title_short |
(Table 1) Physical properties at DSDP Hole 50-416A |
title_full |
(Table 1) Physical properties at DSDP Hole 50-416A |
title_fullStr |
(Table 1) Physical properties at DSDP Hole 50-416A |
title_full_unstemmed |
(Table 1) Physical properties at DSDP Hole 50-416A |
title_sort |
(table 1) physical properties at dsdp hole 50-416a |
publisher |
PANGAEA |
publishDate |
1984 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.810321 https://doi.org/10.1594/PANGAEA.810321 |
op_coverage |
LATITUDE: 32.836300 * LONGITUDE: -10.801000 * DATE/TIME START: 1976-09-29T00:00:00 * DATE/TIME END: 1976-09-29T00:00:00 * MINIMUM DEPTH, sediment/rock: 754.30 m * MAXIMUM DEPTH, sediment/rock: 1615.95 m |
long_lat |
ENVELOPE(-10.801000,-10.801000,32.836300,32.836300) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Boyce, Robert E (1984): Laboratory-determined sound velocity, porosity, wet-bulk density, acoustic impedance, acoustic anisotropy, and reflection coefficients for Cretaceous-Jurassic turbidite sequences at Deep Sea Drilling Project Sites 370 and 416 off the Coast of Morocco. In: Hay, WW; Sibuet, J-C; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 75, 1229-1244, https://doi.org/10.2973/dsdp.proc.75.148.1984 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.810321 https://doi.org/10.1594/PANGAEA.810321 |
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.810321 https://doi.org/10.2973/dsdp.proc.75.148.1984 |
_version_ |
1766136985944064000 |