Physical properties and elastic constants of upper crustal rocks from core-log measurements in Hole 504B

G. J. Iturrino, N. I. Christensen, Keir Becker, L. O. Boldreel, P. K H Harvey, P. Pezard

Research output: Chapter in Book/Report/Conference proceedingChapter

14 Citations (Scopus)

Abstract

Seismic velocities have been measured at confining pressures of 100 MPa and 600 MPa for sheeted dike samples. Compressional- and shear-wave velocities show an increase with depth at Hole 504B, which is in sharp contrast to the atmospheric pressure velocity measurements performed as part of the shipboard analyses. Rocks exposed to different types of alteration and fracture patterns show distinct changes in their physical properties. The seismic reflectors observed on the vertical seismic profile experiment may have been caused by low velocity zones resulting from alteration. The amount of fracturing and hydrothermal alteration in several zones also may have contributed to the acoustic impedance contrast. A comparison of physical properties between samples recovered from Hole 504B and ophiolite studies in the Bay of Islands and Oman shows a good correlation with a Bay of Islands but significant differences from the measurements performed in the Oman complex. -from Authors

Original languageEnglish (US)
Title of host publicationProc., scientific results, ODP Leg 137/140, Costa Rica Rift
EditorsJ. Erzinger
PublisherODP, Texas A&M University, College Station
Pages273-291
Number of pages19
StatePublished - 1995

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physical property
vertical seismic profile
low velocity zone
seismic velocity
confining pressure
hydrothermal alteration
ophiolite
rock
atmospheric pressure
wave velocity
S-wave
dike
acoustics
experiment
comparison

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Iturrino, G. J., Christensen, N. I., Becker, K., Boldreel, L. O., Harvey, P. K. H., & Pezard, P. (1995). Physical properties and elastic constants of upper crustal rocks from core-log measurements in Hole 504B. In J. Erzinger (Ed.), Proc., scientific results, ODP Leg 137/140, Costa Rica Rift (pp. 273-291). ODP, Texas A&M University, College Station.

Physical properties and elastic constants of upper crustal rocks from core-log measurements in Hole 504B. / Iturrino, G. J.; Christensen, N. I.; Becker, Keir; Boldreel, L. O.; Harvey, P. K H; Pezard, P.

Proc., scientific results, ODP Leg 137/140, Costa Rica Rift. ed. / J. Erzinger. ODP, Texas A&M University, College Station, 1995. p. 273-291.

Research output: Chapter in Book/Report/Conference proceedingChapter

Iturrino, GJ, Christensen, NI, Becker, K, Boldreel, LO, Harvey, PKH & Pezard, P 1995, Physical properties and elastic constants of upper crustal rocks from core-log measurements in Hole 504B. in J Erzinger (ed.), Proc., scientific results, ODP Leg 137/140, Costa Rica Rift. ODP, Texas A&M University, College Station, pp. 273-291.
Iturrino GJ, Christensen NI, Becker K, Boldreel LO, Harvey PKH, Pezard P. Physical properties and elastic constants of upper crustal rocks from core-log measurements in Hole 504B. In Erzinger J, editor, Proc., scientific results, ODP Leg 137/140, Costa Rica Rift. ODP, Texas A&M University, College Station. 1995. p. 273-291
Iturrino, G. J. ; Christensen, N. I. ; Becker, Keir ; Boldreel, L. O. ; Harvey, P. K H ; Pezard, P. / Physical properties and elastic constants of upper crustal rocks from core-log measurements in Hole 504B. Proc., scientific results, ODP Leg 137/140, Costa Rica Rift. editor / J. Erzinger. ODP, Texas A&M University, College Station, 1995. pp. 273-291
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