Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150
A suite of petrophysical properties - velocity, resistivity, bulk density, porosity, and matrix density - was measured on 88 core plugs from the CRP-3 drillhole. Core-plug bulk densities were used to recalibrate both whole-core and downhole bulk density logs. Core-plug measurements of matrix density...
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Online Access: | https://dx.doi.org/10.1594/pangaea.510758 https://doi.pangaea.de/10.1594/PANGAEA.510758 |
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ftdatacite:10.1594/pangaea.510758 2023-05-15T13:47:06+02:00 Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 Jarrard, Richard D 2001 application/zip https://dx.doi.org/10.1594/pangaea.510758 https://doi.pangaea.de/10.1594/PANGAEA.510758 en eng PANGAEA - Data Publisher for Earth & Environmental Science Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Core wireline system CRP-3 Sampling/drilling from ice Cape Roberts Project CRP Collection article Supplementary Collection of Datasets 2001 ftdatacite https://doi.org/10.1594/pangaea.510758 2021-11-05T12:55:41Z A suite of petrophysical properties - velocity, resistivity, bulk density, porosity, and matrix density - was measured on 88 core plugs from the CRP-3 drillhole. Core-plug bulk densities were used to recalibrate both whole-core and downhole bulk density logs. Core-plug measurements of matrix density permit conversion of the whole-core and downhole bulk density logs to porosity. Both velocity and formation factor (a normalized measure of resistivity) are strongly correlated with porosity. The velocity/porosity pattern is similar to that for the lower part of CRP-2A and is consistent with the empirical relationship for sandstones. Core-plug and whole-core measurements of P-wave velocity at atmospheric pressure exhibit excellent agreement. Measurements of velocity as a function of pressure indicate a significantly higher velocity sensitivity to pressure than has been observed at CRP-1 and CRP-2A; rebound or presence of microcracks at CRP-3 may be responsible. The percentage difference between velocities at in situ pressures and atmospheric pressures increases downhole from 0% at the seafloor to 9% at the bottom. This pattern can be used to correct whole-core velocity data, measured at atmospheric pressure, to in situ velocities for depth-to-time conversion and associated comparison to the seismic profile across the drillsite Article in Journal/Newspaper Antarc* Antarctica antartic* Ross Sea Victoria Land DataCite Metadata Store (German National Library of Science and Technology) Ross Sea Victoria Land Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Core wireline system CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
spellingShingle |
Core wireline system CRP-3 Sampling/drilling from ice Cape Roberts Project CRP Jarrard, Richard D Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 |
topic_facet |
Core wireline system CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
description |
A suite of petrophysical properties - velocity, resistivity, bulk density, porosity, and matrix density - was measured on 88 core plugs from the CRP-3 drillhole. Core-plug bulk densities were used to recalibrate both whole-core and downhole bulk density logs. Core-plug measurements of matrix density permit conversion of the whole-core and downhole bulk density logs to porosity. Both velocity and formation factor (a normalized measure of resistivity) are strongly correlated with porosity. The velocity/porosity pattern is similar to that for the lower part of CRP-2A and is consistent with the empirical relationship for sandstones. Core-plug and whole-core measurements of P-wave velocity at atmospheric pressure exhibit excellent agreement. Measurements of velocity as a function of pressure indicate a significantly higher velocity sensitivity to pressure than has been observed at CRP-1 and CRP-2A; rebound or presence of microcracks at CRP-3 may be responsible. The percentage difference between velocities at in situ pressures and atmospheric pressures increases downhole from 0% at the seafloor to 9% at the bottom. This pattern can be used to correct whole-core velocity data, measured at atmospheric pressure, to in situ velocities for depth-to-time conversion and associated comparison to the seismic profile across the drillsite |
format |
Article in Journal/Newspaper |
author |
Jarrard, Richard D |
author_facet |
Jarrard, Richard D |
author_sort |
Jarrard, Richard D |
title |
Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 |
title_short |
Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 |
title_full |
Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 |
title_fullStr |
Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 |
title_full_unstemmed |
Petrophysical investigation on sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Jarrard, Richard D (2001): Petrophysics of core plugs from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 143-150 |
title_sort |
petrophysical investigation on sediment core crp-3 from the ross sea, antarctica, supplement to: jarrard, richard d (2001): petrophysics of core plugs from crp-3 drillhole, victoria land basin, antarctica. terra antartica, 8(3), 143-150 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2001 |
url |
https://dx.doi.org/10.1594/pangaea.510758 https://doi.pangaea.de/10.1594/PANGAEA.510758 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Ross Sea Victoria Land Cape Roberts |
geographic_facet |
Ross Sea Victoria Land Cape Roberts |
genre |
Antarc* Antarctica antartic* Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica antartic* Ross Sea Victoria Land |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.510758 |
_version_ |
1766246329508429824 |