The 3D Facies Architecture and Petrophysical Properties of Hyaloclastite Delta Deposits

An Integrated Photogrammetry and Petrophysical Study from southern Iceland

Lois Greenfield*, John M Millett, John Howell, Douglas A Jerram, Tim Watton, David Healy, Malcolm J Hole, Sverre Planke

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Hyaloclastites develop where lava interacts with water resulting in deposits that have a unique and often complex range of petrophysical properties. A combination of eruptive style and emplacement environment dictates the size, geometry and distribution of different hyaloclastite facies and their associated primary physical properties such as porosity, permeability and velocity. To date, links between the 3D facies variability within these systems and their petrophysical properties remain poorly understood. Hjörleifshöfði in southern Iceland presents an exceptional outcrop exposure of an emergent hyaloclastite sequence > 1 km wide by > 200 m high and enables an investigation of the distribution of the hyaloclastite deposits at seismic scale. Within this study we present a photogrammetry‐based 3D model from part of this recent hyaloclastite delta and incorporate previous work by Watton et al. (2013) to undertake detailed facies interpretation and quantification. Laboratory petrophysical analyses were performed on 34 core plugs cut from key field facies samples, including P‐ and S‐wave velocity, density, porosity and permeability at both ambient and confining pressure. Integration of the 3D model with the petrophysical data has enabled the production of pseudo‐wireline logs and property distribution maps which demonstrate the variability of physical properties within hyaloclastite sequences at outcrop to seismic scale. Through comparison of our data with examples of older buried hyaloclastite sequences we demonstrate that the wide‐ranging properties of young hyaloclastites become highly uniform in older sequences making their identification by remote geophysical methods for similar facies variations more challenging. Our study provides an improved understanding of the petrophysical property distribution within hyaloclastite sequences and forms a valuable step towards improving the understanding of similar subsurface sequences and their implications for imaging and fluid flow
Original languageEnglish
Article number12415
Number of pages24
JournalBasin Research
Early online date4 Nov 2019
DOIs
Publication statusE-pub ahead of print - 4 Nov 2019

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hyaloclastite
photogrammetry
outcrop
physical property
porosity
permeability
geophysical method
confining pressure
lava
fluid flow
emplacement
geometry
distribution

Keywords

  • basalt
  • eruption
  • fluid flow
  • lava delta
  • petrophysical distribution
  • LAVA FLOWS
  • SEQUENCES
  • petrophysical distribution
  • COMPLEXES
  • EMPLACEMENT
  • KILAUEA VOLCANO
  • BASALT
  • DATA SET
  • ATLANTIC IGNEOUS PROVINCE
  • MORPHOLOGY
  • INSIGHTS

ASJC Scopus subject areas

  • Geology

Cite this

@article{afd8d87d3698405e9dbab3c1be6b383a,
title = "The 3D Facies Architecture and Petrophysical Properties of Hyaloclastite Delta Deposits: An Integrated Photogrammetry and Petrophysical Study from southern Iceland",
abstract = "Hyaloclastites develop where lava interacts with water resulting in deposits that have a unique and often complex range of petrophysical properties. A combination of eruptive style and emplacement environment dictates the size, geometry and distribution of different hyaloclastite facies and their associated primary physical properties such as porosity, permeability and velocity. To date, links between the 3D facies variability within these systems and their petrophysical properties remain poorly understood. Hj{\"o}rleifsh{\"o}f{\dh}i in southern Iceland presents an exceptional outcrop exposure of an emergent hyaloclastite sequence > 1 km wide by > 200 m high and enables an investigation of the distribution of the hyaloclastite deposits at seismic scale. Within this study we present a photogrammetry‐based 3D model from part of this recent hyaloclastite delta and incorporate previous work by Watton et al. (2013) to undertake detailed facies interpretation and quantification. Laboratory petrophysical analyses were performed on 34 core plugs cut from key field facies samples, including P‐ and S‐wave velocity, density, porosity and permeability at both ambient and confining pressure. Integration of the 3D model with the petrophysical data has enabled the production of pseudo‐wireline logs and property distribution maps which demonstrate the variability of physical properties within hyaloclastite sequences at outcrop to seismic scale. Through comparison of our data with examples of older buried hyaloclastite sequences we demonstrate that the wide‐ranging properties of young hyaloclastites become highly uniform in older sequences making their identification by remote geophysical methods for similar facies variations more challenging. Our study provides an improved understanding of the petrophysical property distribution within hyaloclastite sequences and forms a valuable step towards improving the understanding of similar subsurface sequences and their implications for imaging and fluid flow",
keywords = "basalt, eruption, fluid flow, lava delta, petrophysical distribution, LAVA FLOWS, SEQUENCES, petrophysical distribution, COMPLEXES, EMPLACEMENT, KILAUEA VOLCANO, BASALT, DATA SET, ATLANTIC IGNEOUS PROVINCE, MORPHOLOGY, INSIGHTS",
author = "Lois Greenfield and Millett, {John M} and John Howell and Jerram, {Douglas A} and Tim Watton and David Healy and Hole, {Malcolm J} and Sverre Planke",
note = "ACKNOWLEDGEMENTS Dougal Jerram is partly funded through a Norwegian Research Council Centres of Excellence project (project number 223272, CEED). Adam Soule, Kirstie Wright and an anonymous reviewer are thanked for their extensive comments which helped to improve the final manuscript. We thank Cynthia Ebinger for clear editorial guidance and handing of the manuscript.",
year = "2019",
month = "11",
day = "4",
doi = "10.1111/bre.12415",
language = "English",
journal = "Basin Research",
issn = "0950-091X",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - The 3D Facies Architecture and Petrophysical Properties of Hyaloclastite Delta Deposits

T2 - An Integrated Photogrammetry and Petrophysical Study from southern Iceland

AU - Greenfield, Lois

AU - Millett, John M

AU - Howell, John

AU - Jerram, Douglas A

AU - Watton, Tim

AU - Healy, David

AU - Hole, Malcolm J

AU - Planke, Sverre

N1 - ACKNOWLEDGEMENTS Dougal Jerram is partly funded through a Norwegian Research Council Centres of Excellence project (project number 223272, CEED). Adam Soule, Kirstie Wright and an anonymous reviewer are thanked for their extensive comments which helped to improve the final manuscript. We thank Cynthia Ebinger for clear editorial guidance and handing of the manuscript.

PY - 2019/11/4

Y1 - 2019/11/4

N2 - Hyaloclastites develop where lava interacts with water resulting in deposits that have a unique and often complex range of petrophysical properties. A combination of eruptive style and emplacement environment dictates the size, geometry and distribution of different hyaloclastite facies and their associated primary physical properties such as porosity, permeability and velocity. To date, links between the 3D facies variability within these systems and their petrophysical properties remain poorly understood. Hjörleifshöfði in southern Iceland presents an exceptional outcrop exposure of an emergent hyaloclastite sequence > 1 km wide by > 200 m high and enables an investigation of the distribution of the hyaloclastite deposits at seismic scale. Within this study we present a photogrammetry‐based 3D model from part of this recent hyaloclastite delta and incorporate previous work by Watton et al. (2013) to undertake detailed facies interpretation and quantification. Laboratory petrophysical analyses were performed on 34 core plugs cut from key field facies samples, including P‐ and S‐wave velocity, density, porosity and permeability at both ambient and confining pressure. Integration of the 3D model with the petrophysical data has enabled the production of pseudo‐wireline logs and property distribution maps which demonstrate the variability of physical properties within hyaloclastite sequences at outcrop to seismic scale. Through comparison of our data with examples of older buried hyaloclastite sequences we demonstrate that the wide‐ranging properties of young hyaloclastites become highly uniform in older sequences making their identification by remote geophysical methods for similar facies variations more challenging. Our study provides an improved understanding of the petrophysical property distribution within hyaloclastite sequences and forms a valuable step towards improving the understanding of similar subsurface sequences and their implications for imaging and fluid flow

AB - Hyaloclastites develop where lava interacts with water resulting in deposits that have a unique and often complex range of petrophysical properties. A combination of eruptive style and emplacement environment dictates the size, geometry and distribution of different hyaloclastite facies and their associated primary physical properties such as porosity, permeability and velocity. To date, links between the 3D facies variability within these systems and their petrophysical properties remain poorly understood. Hjörleifshöfði in southern Iceland presents an exceptional outcrop exposure of an emergent hyaloclastite sequence > 1 km wide by > 200 m high and enables an investigation of the distribution of the hyaloclastite deposits at seismic scale. Within this study we present a photogrammetry‐based 3D model from part of this recent hyaloclastite delta and incorporate previous work by Watton et al. (2013) to undertake detailed facies interpretation and quantification. Laboratory petrophysical analyses were performed on 34 core plugs cut from key field facies samples, including P‐ and S‐wave velocity, density, porosity and permeability at both ambient and confining pressure. Integration of the 3D model with the petrophysical data has enabled the production of pseudo‐wireline logs and property distribution maps which demonstrate the variability of physical properties within hyaloclastite sequences at outcrop to seismic scale. Through comparison of our data with examples of older buried hyaloclastite sequences we demonstrate that the wide‐ranging properties of young hyaloclastites become highly uniform in older sequences making their identification by remote geophysical methods for similar facies variations more challenging. Our study provides an improved understanding of the petrophysical property distribution within hyaloclastite sequences and forms a valuable step towards improving the understanding of similar subsurface sequences and their implications for imaging and fluid flow

KW - basalt

KW - eruption

KW - fluid flow

KW - lava delta

KW - petrophysical distribution

KW - LAVA FLOWS

KW - SEQUENCES

KW - petrophysical distribution

KW - COMPLEXES

KW - EMPLACEMENT

KW - KILAUEA VOLCANO

KW - BASALT

KW - DATA SET

KW - ATLANTIC IGNEOUS PROVINCE

KW - MORPHOLOGY

KW - INSIGHTS

UR - http://www.scopus.com/inward/record.url?scp=85074796448&partnerID=8YFLogxK

U2 - 10.1111/bre.12415

DO - 10.1111/bre.12415

M3 - Article

JO - Basin Research

JF - Basin Research

SN - 0950-091X

M1 - 12415

ER -