2008
DOI: 10.1029/2007jb005268
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Physical properties of young (3.5 Ma) oceanic crust from the eastern flank of the Juan de Fuca Ridge: Comparison of wireline and core measurements with global data

Abstract: [1] We compile and compare petrophysical data from the upper oceanic crust in Hole U1301B, on 3.5 Ma seafloor on the eastern flank of the Juan de Fuca Ridge. Measurements include core-scale (lab-based) and in situ (wireline) measurements of formation porosity, electrical resistivity, bulk density, P wave velocity, and gamma ray emission. A comparison between Hole U1301B data and those from other sites, ranging in age from 5.9 to 167 Ma, demonstrates some important differences. Hole U1301B samples tend to have … Show more

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Cited by 12 publications
(19 citation statements)
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References 60 publications
(78 reference statements)
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“…Logging data help to define the lithostratigraphy of Hole U1301B and establish whether or not conditions are as expected, in comparison to measurements made on core samples and borehole and core data collected from other basement holes (Bartetzko and Fisher, 2008;Tsuji and Iturrino, 2008). Logging data show that upper basement around Hole U1301B is highly layered at a scale of meters to tens of meters, similar to what is observed in other ocean crustal holes (e.g., Bartetzko et al, 2001;Jarrard et al, 2003;Pezard et al, 1992).…”
Section: Expedition 301 Drilling Coring and Loggingmentioning
confidence: 55%
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“…Logging data help to define the lithostratigraphy of Hole U1301B and establish whether or not conditions are as expected, in comparison to measurements made on core samples and borehole and core data collected from other basement holes (Bartetzko and Fisher, 2008;Tsuji and Iturrino, 2008). Logging data show that upper basement around Hole U1301B is highly layered at a scale of meters to tens of meters, similar to what is observed in other ocean crustal holes (e.g., Bartetzko et al, 2001;Jarrard et al, 2003;Pezard et al, 1992).…”
Section: Expedition 301 Drilling Coring and Loggingmentioning
confidence: 55%
“…The deepest packer setting depth corresponds to an abrupt change in the character of basement geophysical logs. Above 470 mbsf (205 msb) the borehole diameter is highly irregular and there are intervals 10-50 m thick having very low bulk density, electrical resistivity, and P-wave velocity (Bartetzko and Fisher, 2008). Below ~470 mbsf (~200 msb), the borehole diameter is more consistent with the drill bit diameter, and zones of low bulk density are thinner and more widely spaced (Fig.…”
Section: δP = F(qttrs)mentioning
confidence: 75%
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