Permeability and pressure measurements in Lesser Antilles submarine slides: Evidence for pressure-driven slow-slip failure

Matthew J. Hornbach, Michael Manga, Michael Genecov, Robert Valdez, Peter Miller, Demian Saffer, Esther Adelstein, Sara Lafuerza, Tatsuya Adachi, Christoph Breitkreuz, Martin Jutzeler, Anne Le Friant, Osamu Ishizuka, Sally Morgan, Angela Slagle, Peter J. Talling, Andrew Fraass, Sebastian F.L. Watt, Nicole A. Stroncik, Mohammed AljahdaliGeorges Boudon, Akihiko Fujinawa, Robert Hatfield, Kyoko Kataoka, Fukashi Maeno, Michael Martinez-Colon, Molly McCanta, Martin Palmer, Adam Stinton, K. S.V. Subramanyam, Yoshihiko Tamura, Benoît Villemant, Deborah Wall-Palmer, Fei Wang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Recent studies hypothesize that some submarine slides fail via pressure-driven slow-slip deformation. To test this hypothesis, this study derives pore pressures in failed and adjacent unfailed deep marine sediments by integrating rock physics models, physical property measurements on recovered sediment core, and wireline logs. Two drill sites (U1394 and U1399) drilled through interpreted slide debris; a third (U1395) drilled into normal marine sediment. Near-hydrostatic fluid pressure exists in sediments at site U1395. In contrast, results at both sites U1394 and U1399 indicate elevated pore fluid pressures in some sediment. We suggest that high pore pressure at the base of a submarine slide deposit at site U1394 results from slide shearing. High pore pressure exists throughout much of site U1399, and Mohr circle analysis suggests that only slight changes in the stress regime will trigger motion. Consolidation tests and permeability measurements indicate moderately low (~10-16-10-17 m2) permeability and overconsolidation in fine-grained slide debris, implying that these sediments act as seals. Three mechanisms, in isolation or in combination, may produce the observed elevated pore fluid pressures at site U1399: (1) rapid sedimentation, (2) lateral fluid flow, and (3) shearing that causes sediments to contract, increasing pore pressure. Our preferred hypothesis is this third mechanism because it explains both elevated fluid pressure and sediment overconsolidation without requiring high sedimentation rates. Our combined analysis of subsurface pore pressures, drilling data, and regional seismic images indicates that slope failure offshore Martinique is perhaps an ongoing, creep-like process where small stress changes trigger motion.

Original languageEnglish (US)
Pages (from-to)7986-8011
Number of pages26
JournalJournal of Geophysical Research: Solid Earth
Volume120
Issue number12
DOIs
StatePublished - Dec 1 2015

Fingerprint

Lesser Antilles
pressure measurement
Pressure measurement
chutes
pore pressure
permeability
Sediments
sediments
slip
Pore pressure
fluid pressure
porosity
overconsolidation
sediment
Fluids
marine sediment
shearing
Shearing
Sedimentation
debris

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

Hornbach, Matthew J. ; Manga, Michael ; Genecov, Michael ; Valdez, Robert ; Miller, Peter ; Saffer, Demian ; Adelstein, Esther ; Lafuerza, Sara ; Adachi, Tatsuya ; Breitkreuz, Christoph ; Jutzeler, Martin ; Le Friant, Anne ; Ishizuka, Osamu ; Morgan, Sally ; Slagle, Angela ; Talling, Peter J. ; Fraass, Andrew ; Watt, Sebastian F.L. ; Stroncik, Nicole A. ; Aljahdali, Mohammed ; Boudon, Georges ; Fujinawa, Akihiko ; Hatfield, Robert ; Kataoka, Kyoko ; Maeno, Fukashi ; Martinez-Colon, Michael ; McCanta, Molly ; Palmer, Martin ; Stinton, Adam ; Subramanyam, K. S.V. ; Tamura, Yoshihiko ; Villemant, Benoît ; Wall-Palmer, Deborah ; Wang, Fei. / Permeability and pressure measurements in Lesser Antilles submarine slides : Evidence for pressure-driven slow-slip failure. In: Journal of Geophysical Research: Solid Earth. 2015 ; Vol. 120, No. 12. pp. 7986-8011.
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title = "Permeability and pressure measurements in Lesser Antilles submarine slides: Evidence for pressure-driven slow-slip failure",
abstract = "Recent studies hypothesize that some submarine slides fail via pressure-driven slow-slip deformation. To test this hypothesis, this study derives pore pressures in failed and adjacent unfailed deep marine sediments by integrating rock physics models, physical property measurements on recovered sediment core, and wireline logs. Two drill sites (U1394 and U1399) drilled through interpreted slide debris; a third (U1395) drilled into normal marine sediment. Near-hydrostatic fluid pressure exists in sediments at site U1395. In contrast, results at both sites U1394 and U1399 indicate elevated pore fluid pressures in some sediment. We suggest that high pore pressure at the base of a submarine slide deposit at site U1394 results from slide shearing. High pore pressure exists throughout much of site U1399, and Mohr circle analysis suggests that only slight changes in the stress regime will trigger motion. Consolidation tests and permeability measurements indicate moderately low (~10-16-10-17 m2) permeability and overconsolidation in fine-grained slide debris, implying that these sediments act as seals. Three mechanisms, in isolation or in combination, may produce the observed elevated pore fluid pressures at site U1399: (1) rapid sedimentation, (2) lateral fluid flow, and (3) shearing that causes sediments to contract, increasing pore pressure. Our preferred hypothesis is this third mechanism because it explains both elevated fluid pressure and sediment overconsolidation without requiring high sedimentation rates. Our combined analysis of subsurface pore pressures, drilling data, and regional seismic images indicates that slope failure offshore Martinique is perhaps an ongoing, creep-like process where small stress changes trigger motion.",
author = "Hornbach, {Matthew J.} and Michael Manga and Michael Genecov and Robert Valdez and Peter Miller and Demian Saffer and Esther Adelstein and Sara Lafuerza and Tatsuya Adachi and Christoph Breitkreuz and Martin Jutzeler and {Le Friant}, Anne and Osamu Ishizuka and Sally Morgan and Angela Slagle and Talling, {Peter J.} and Andrew Fraass and Watt, {Sebastian F.L.} and Stroncik, {Nicole A.} and Mohammed Aljahdali and Georges Boudon and Akihiko Fujinawa and Robert Hatfield and Kyoko Kataoka and Fukashi Maeno and Michael Martinez-Colon and Molly McCanta and Martin Palmer and Adam Stinton and Subramanyam, {K. S.V.} and Yoshihiko Tamura and Beno{\^i}t Villemant and Deborah Wall-Palmer and Fei Wang",
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Hornbach, MJ, Manga, M, Genecov, M, Valdez, R, Miller, P, Saffer, D, Adelstein, E, Lafuerza, S, Adachi, T, Breitkreuz, C, Jutzeler, M, Le Friant, A, Ishizuka, O, Morgan, S, Slagle, A, Talling, PJ, Fraass, A, Watt, SFL, Stroncik, NA, Aljahdali, M, Boudon, G, Fujinawa, A, Hatfield, R, Kataoka, K, Maeno, F, Martinez-Colon, M, McCanta, M, Palmer, M, Stinton, A, Subramanyam, KSV, Tamura, Y, Villemant, B, Wall-Palmer, D & Wang, F 2015, 'Permeability and pressure measurements in Lesser Antilles submarine slides: Evidence for pressure-driven slow-slip failure', Journal of Geophysical Research: Solid Earth, vol. 120, no. 12, pp. 7986-8011. https://doi.org/10.1002/2015JB012061

Permeability and pressure measurements in Lesser Antilles submarine slides : Evidence for pressure-driven slow-slip failure. / Hornbach, Matthew J.; Manga, Michael; Genecov, Michael; Valdez, Robert; Miller, Peter; Saffer, Demian; Adelstein, Esther; Lafuerza, Sara; Adachi, Tatsuya; Breitkreuz, Christoph; Jutzeler, Martin; Le Friant, Anne; Ishizuka, Osamu; Morgan, Sally; Slagle, Angela; Talling, Peter J.; Fraass, Andrew; Watt, Sebastian F.L.; Stroncik, Nicole A.; Aljahdali, Mohammed; Boudon, Georges; Fujinawa, Akihiko; Hatfield, Robert; Kataoka, Kyoko; Maeno, Fukashi; Martinez-Colon, Michael; McCanta, Molly; Palmer, Martin; Stinton, Adam; Subramanyam, K. S.V.; Tamura, Yoshihiko; Villemant, Benoît; Wall-Palmer, Deborah; Wang, Fei.

In: Journal of Geophysical Research: Solid Earth, Vol. 120, No. 12, 01.12.2015, p. 7986-8011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Permeability and pressure measurements in Lesser Antilles submarine slides

T2 - Evidence for pressure-driven slow-slip failure

AU - Hornbach, Matthew J.

AU - Manga, Michael

AU - Genecov, Michael

AU - Valdez, Robert

AU - Miller, Peter

AU - Saffer, Demian

AU - Adelstein, Esther

AU - Lafuerza, Sara

AU - Adachi, Tatsuya

AU - Breitkreuz, Christoph

AU - Jutzeler, Martin

AU - Le Friant, Anne

AU - Ishizuka, Osamu

AU - Morgan, Sally

AU - Slagle, Angela

AU - Talling, Peter J.

AU - Fraass, Andrew

AU - Watt, Sebastian F.L.

AU - Stroncik, Nicole A.

AU - Aljahdali, Mohammed

AU - Boudon, Georges

AU - Fujinawa, Akihiko

AU - Hatfield, Robert

AU - Kataoka, Kyoko

AU - Maeno, Fukashi

AU - Martinez-Colon, Michael

AU - McCanta, Molly

AU - Palmer, Martin

AU - Stinton, Adam

AU - Subramanyam, K. S.V.

AU - Tamura, Yoshihiko

AU - Villemant, Benoît

AU - Wall-Palmer, Deborah

AU - Wang, Fei

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Recent studies hypothesize that some submarine slides fail via pressure-driven slow-slip deformation. To test this hypothesis, this study derives pore pressures in failed and adjacent unfailed deep marine sediments by integrating rock physics models, physical property measurements on recovered sediment core, and wireline logs. Two drill sites (U1394 and U1399) drilled through interpreted slide debris; a third (U1395) drilled into normal marine sediment. Near-hydrostatic fluid pressure exists in sediments at site U1395. In contrast, results at both sites U1394 and U1399 indicate elevated pore fluid pressures in some sediment. We suggest that high pore pressure at the base of a submarine slide deposit at site U1394 results from slide shearing. High pore pressure exists throughout much of site U1399, and Mohr circle analysis suggests that only slight changes in the stress regime will trigger motion. Consolidation tests and permeability measurements indicate moderately low (~10-16-10-17 m2) permeability and overconsolidation in fine-grained slide debris, implying that these sediments act as seals. Three mechanisms, in isolation or in combination, may produce the observed elevated pore fluid pressures at site U1399: (1) rapid sedimentation, (2) lateral fluid flow, and (3) shearing that causes sediments to contract, increasing pore pressure. Our preferred hypothesis is this third mechanism because it explains both elevated fluid pressure and sediment overconsolidation without requiring high sedimentation rates. Our combined analysis of subsurface pore pressures, drilling data, and regional seismic images indicates that slope failure offshore Martinique is perhaps an ongoing, creep-like process where small stress changes trigger motion.

AB - Recent studies hypothesize that some submarine slides fail via pressure-driven slow-slip deformation. To test this hypothesis, this study derives pore pressures in failed and adjacent unfailed deep marine sediments by integrating rock physics models, physical property measurements on recovered sediment core, and wireline logs. Two drill sites (U1394 and U1399) drilled through interpreted slide debris; a third (U1395) drilled into normal marine sediment. Near-hydrostatic fluid pressure exists in sediments at site U1395. In contrast, results at both sites U1394 and U1399 indicate elevated pore fluid pressures in some sediment. We suggest that high pore pressure at the base of a submarine slide deposit at site U1394 results from slide shearing. High pore pressure exists throughout much of site U1399, and Mohr circle analysis suggests that only slight changes in the stress regime will trigger motion. Consolidation tests and permeability measurements indicate moderately low (~10-16-10-17 m2) permeability and overconsolidation in fine-grained slide debris, implying that these sediments act as seals. Three mechanisms, in isolation or in combination, may produce the observed elevated pore fluid pressures at site U1399: (1) rapid sedimentation, (2) lateral fluid flow, and (3) shearing that causes sediments to contract, increasing pore pressure. Our preferred hypothesis is this third mechanism because it explains both elevated fluid pressure and sediment overconsolidation without requiring high sedimentation rates. Our combined analysis of subsurface pore pressures, drilling data, and regional seismic images indicates that slope failure offshore Martinique is perhaps an ongoing, creep-like process where small stress changes trigger motion.

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