ORCID Profile
0000-0003-2788-331X
Current Organisation
Monash University
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Geology | Geochemistry | Inorganic Geochemistry | Igneous and Metamorphic Petrology | Ore Deposit Petrology | Exploration Geochemistry | Isotope Geochemistry | Extraterrestrial Geology | Structural Geology | Planetary science (excl. solar system and planetary geology) | Astronomical sciences | Machine learning not elsewhere classified | Geochronology | Ore Deposit Petrology | Mineral Processing/Beneficiation | Metals and Alloy Materials | Planetary Science (excl. Extraterrestrial Geology) | Geochemistry not elsewhere classified | Condensed Matter Characterisation Technique Development
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Earth Sciences | Precious (Noble) Metal Ore Exploration | Mineral Exploration not elsewhere classified | Copper Ore Exploration | Soils not elsewhere classified | Emerging Defence Technologies | Conserving Collections and Movable Cultural Heritage | Primary Mining and Extraction of Mineral Resources not elsewhere classified | First Stage Treatment of Ores and Minerals not elsewhere classified | Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) not elsewhere classified | Network Infrastructure Equipment | Expanding Knowledge in Engineering | Mining and Extraction of Precious (Noble) Metal Ores | Integrated Systems | Titanium Minerals, Zircon, and Rare Earth Metal Ore (e.g. Monazite) Exploration |
Related Links
Publications
REE-Y, Ti, and P remobilization in magmatic rocks by hydrothermal alteration during Cu-Au deposit formation
Publisher: Society of Economic Geologists
Date: 06-2010
ARSENOPYRITE MELTING DURING METAMORPHISM OF SULFIDE ORE DEPOSITS
Publisher: Mineralogical Association of Canada
Date: 10-2006
On the source of diogenites and olivine diogenites: Compositional diversity from variable fO2
Publisher: Elsevier BV
Date: 08-2019
Grade distribution of the Giant Ok Tedi Cu-Au deposit, Papua New Guinea
Publisher: Society of Economic Geologists
Date: 30-09-2013
Multiple crust–mantle interactions for the destruction of the North China Craton: Geochemical and Sr–Nd–Pb–Hf isotopic evidence from the Longbaoshan alkaline complex
Publisher: Elsevier BV
Date: 02-2011
Garnet peridotites reveal spatial and temporal changes in the oxidation potential of subduction
Publisher: Springer Science and Business Media LLC
Date: 06-11-2018
DOI: 10.1038/S41598-018-34669-0
Abstract: Changes in the oxygen fugacity ( f O 2 ) of the Earth’s mantle have been proposed to control the spatial and temporal distribution of arc-related ore deposits, and possibly reflect the evolution of the atmosphere over billions of years. Thermodynamic calculations and natural evidence indicate that fluids released from subducting slabs can oxidise the mantle, but whether their oxidation potential varied in space and time remains controversial. Here, we use garnet peridotites from western Norway to show that there is a linear decrease in maximum f O 2 with increasing depth in the mantle wedge. We ascribe this relation to changes in the speciation of sulfur released in slab fluids, with sulfate, controlling maximum oxidation, preferentially released at shallow depths. Even though the amount of sulfate in the Precambrian oceans, and thus in subducted lithologies, is thought to have been dramatically lower than during the Phanerozoic, garnet peridotites metasomatised during these two periods have a comparable f O 2 range. This opens to the possibility that an oxidised mantle with f O 2 similar to modern-day values has existed since the Proterozoic and possibly earlier. Consequently, early magmas derived from partial melting of metasomatised mantle may have had suitable f O 2 to generate porphyry Cu-Au and iron-oxide Cu-Au deposits.
Sulfur isotope and PGE systematics of metasomatised mantle wedge
Publisher: Elsevier BV
Date: 09-2018
A model for evolving crust on 4 Vesta through combined compositional and thermal modelling
Publisher: Elsevier BV
Date: 10-2021
Gold remobilisation and formation of high grade ore shoots driven by dissolution-reprecipitation replacement and Ni substitution into auriferous arsenopyrite
Publisher: Elsevier BV
Date: 04-2016
The role of fluorine in hydrothermal mobilization and transportation of Fe, U and REE and the formation of IOCG deposits
Publisher: Elsevier BV
Date: 2019
New insights into the size and timing of the Lawn Hill impact structure: relationship to the Century Zn – Pb deposit
Publisher: Informa UK Limited
Date: 06-2008
The relationship between subduction zone redox budget and arc magma fertility
Publisher: Elsevier BV
Date: 08-2011
Deformation-induced silica redistribution in banded iron formation, Hamersley Province, Australia
Publisher: Elsevier BV
Date: 12-2016
On the sourc e of orogenic gold
Publisher: Geological Society of America
Date: 12-2013
Sequential Lonsdaleite to Diamond Formation in Ureilite Meteorites via In Situ Chemical Fluid/Vapor Deposition
Publisher: Proceedings of the National Academy of Sciences
Date: 12-09-2022
Abstract: Ureilite meteorites are arguably our only large suite of s les from the mantle of a dwarf planet and typically contain greater abundances of diamond than any known rock. Some also contain lonsdaleite, which may be harder than diamond. Here, we use electron microscopy to map the relative distribution of coexisting lonsdaleite, diamond, and graphite in ureilites. These maps show that lonsdaleite tends to occur as polycrystalline grains, sometimes with distinctive fold morphologies, partially replaced by diamond + graphite in rims and cross-cutting veins. These observations provide strong evidence for how the carbon phases formed in ureilites, which, despite much conjecture and seemingly conflicting observations, has not been resolved. We suggest that lonsdaleite formed by pseudomorphic replacement of primary graphite shapes, facilitated by a supercritical C-H-O-S fluid during rapid decompression and cooling. Diamond + graphite formed after lonsdaleite via ongoing reaction with C-H-O-S gas. This graphite lonsdaleite diamond + graphite formation process is akin to industrial chemical vapor deposition but operates at higher pressure (∼1–100 bar) and provides a pathway toward manufacture of shaped lonsdaleite for industrial application. It also provides a unique model for ureilites that can reconcile all conflicting observations relating to diamond formation.
Arsenic evolution as a tool for understanding formation of pyritic gold ores
Publisher: Geological Society of America
Date: 26-02-2019
DOI: 10.1130/G45708.1
Pyrite-pyrrhotite stability in a metamorphic aureole: Implications for orogenic gold genesis
Publisher: Society of Economic Geologists
Date: 03-03-2017
Mobility of iron and nickel at low temperatures: Implications for 60Fe–60Ni systematics of chondrules from unequilibrated ordinary chondrites
Publisher: Elsevier BV
Date: 04-2016
Complex sulfur speciation in scapolite - implications for the role of scapolite as a redox and fluid chemistry buffer in crustal fluids
Publisher: Elsevier BV
Date: 09-2023
Fluorine and chlorine behaviour during progressive dehydration melting: Consequences for granite geochemistry and metallogeny
Publisher: Wiley
Date: 13-06-2017
DOI: 10.1111/JMG.12253
The Lawn Hill annulus: An Ordovician meteorite impact into water-saturated dolomite
Publisher: Wiley
Date: 21-10-2016
DOI: 10.1111/MAPS.12734
Gold in the oceans through time
Publisher: Elsevier BV
Date: 10-2015
Evaporite-bearing orogenic belts produce ligand-rich and diverse metamorphic fluids
Publisher: Elsevier BV
Date: 04-2020
Functional basis of primary succession: Traits of the pioneer microbes
Publisher: Wiley
Date: 18-11-2023
Disequilibrium melting and melt migration driven by impacts: Implications for rapid planetesimal core formation
Publisher: Elsevier BV
Date: 2013
Upper temperature limits of orogenic gold deposit formation: Constraints from the granulite-hosted griffins find deposit, yilgarn craton
Publisher: Society of Economic Geologists
Date: 08-2009
Evaluation of meteorites as habitats for terrestrial microorganisms: Results from the Nullarbor Plain, Australia, a Mars analogue site
Publisher: Elsevier BV
Date: 10-2017
Insights into the liquid bismuth collector model through analysis of the Bi-Au Stormont skarn prospect, Northwest Tasmania
Publisher: Society of Economic Geologists
Date: 22-05-2012
Generation of metal-rich felsic magmas during crustal anatexis
Publisher: Geological Society of America
Date: 2003
DOI: 10.1130/G19499.1
High Survivability of Micrometeorites on Mars: Sites With Enhanced Availability of Limiting Nutrients
Publisher: American Geophysical Union (AGU)
Date: 07-2019
DOI: 10.1029/2019JE006005
Abstract: NASA's strategy in exploring Mars has been to follow the water, because water is essential for life, and it has been found that there are many locations where there was once liquid water on the surface. Now perhaps, to narrow down the search for life on a barren basalt‐dominated surface, there needs to be a refocusing to a strategy of “follow the nutrients.” Here we model the entry of metallic micrometeoroids through the Martian atmosphere, and investigate variations in micrometeorite abundance at an analogue site on the Nullarbor Plain in Australia, to determine where the common limiting nutrients available in these (e.g., P, S, Fe) become concentrated on the surface of Mars. We find that dense micrometeorites are abundant in a range of desert environments, becoming concentrated by aeolian processes into specific sites that would be easily investigated by a robotic rover. Our modeling suggests that micrometeorites are currently far more abundant on the surface of Mars than on Earth, and given the far greater abundance of water and warmer conditions on Earth and thus much more active weather system, this was likely true throughout the history of Mars. Because micrometeorites contain a variety of redox sensitive minerals including FeNi alloys, sulfide and phosphide minerals, and organic compounds, the sites where these become concentrated are far more nutrient rich, and thus more compatible with chemolithotrophic life than most of the Martian surface.
A review of the chondrite–achondrite transition, and a metamorphic facies series for equilibrated primitive stony meteorites
Publisher: Wiley
Date: 04-2020
DOI: 10.1111/MAPS.13472
Extreme Silver Isotope Variation in Orogenic Gold Systems Implies Multistaged Metal Remobilization During Ore Genesis
Publisher: Society of Economic Geologists
Date: 03-2019
Insights into subduction zone sulfur recycling from isotopic analysis of eclogite-hosted sulfides
Publisher: Elsevier BV
Date: 02-2014
Mobilization of Gold as a Polymetallic Melt during PeliteAnatexis at the Challenger Deposit, South Australia: A MetamorphosedArchean Gold Deposit
Publisher: Society of Economic Geologists
Date: 09-2002
Anomalously silver-rich vein-hosted mineralisation in disseminated-style gold deposits, Jiaodong gold district, China
Publisher: Elsevier BV
Date: 07-2015
Release of uranium from highly radiogenic zircon through metamictization: The source of orogenic uranium ores
Publisher: Geological Society of America
Date: 18-11-2016
DOI: 10.1130/G38659Y.1
Investigation of the H7 ordinary chondrite, Watson 012: Implications for recognition and classification of Type 7 meteorites
Publisher: Elsevier BV
Date: 06-2014
Separate zones of sulfate and sulfide release from subducted mafic oceanic crust
Publisher: Elsevier BV
Date: 10-2020
Release of uranium from highly radiogenic zircon through metamictization: The source of orogenic uranium ores
Publisher: Geological Society of America
Date: 11-11-2015
DOI: 10.1130/G37238.1
Trace element catalyses mineral replacement reactions and facilitates ore formation
Publisher: Springer Science and Business Media LLC
Date: 02-03-2021
DOI: 10.1038/S41467-021-21684-5
Abstract: Reaction-induced porosity is a key factor enabling protracted fluid-rock interactions in the Earth’s crust, promoting large-scale mineralogical changes during diagenesis, metamorphism, and ore formation. Here, we show experimentally that the presence of trace amounts of dissolved cerium increases the porosity of hematite (Fe 2 O 3 ) formed via fluid-induced, redox-independent replacement of magnetite (Fe 3 O 4 ), thereby increasing the efficiency of coupled magnetite replacement, fluid flow, and element mass transfer. Cerium acts as a catalyst affecting the nucleation and growth of hematite by modifying the Fe 2+ (aq)/Fe 3+ (aq) ratio at the reaction interface. Our results demonstrate that trace elements can enhance fluid-mediated mineral replacement reactions, ultimately controlling the kinetics, texture, and composition of fluid-mineral systems. Applied to some of the world’s most valuable orebodies, these results provide new insights into how early formation of extensive magnetite alteration may have preconditioned these ore systems for later enhanced metal accumulation, contributing to their sizes and metal endowment.
CHOS gas/fluid-induced reduction in ureilites
Publisher: Wiley
Date: 28-10-2021
DOI: 10.1111/MAPS.13755
Abstract: Ureilite meteorites contain regions of localized olivine reduction to Fe metal widely accepted to have formed by redox reactions involving oxidation of graphite, a process known as secondary smelting. However, the possibility that other reductants might be responsible for this process has largely been ignored. Here, 17 ureilite s les are investigated to assess whether, instead of smelting involving only solid reactants, a CHOS gas/fluid could have caused much of the smelting. Features consistent with gas‐ or supercritical fluid‐driven reduction were found to be abundant in all ureilites, such as fracture‐focused smelting, plume‐like reaction fronts, and addition of sulfur. Many of these are developed away from graphite. In some ureilites, it is clear that the redox process coincided with annealing, and we suggest that this was caused by enhanced diffusion facilitated by a higher density gas or fluid, rather than slow cooling, which requires elevated pressure. The C‐CO and CH 4 ‐C‐H 2 O buffers were modeled to examine their relative potential to drive reduction. This modeling showed that a CH 4 ‐rich fluid is able to produce the observed mineral compositions at elevated pressures. This result, coupled with the observed textures, is used to develop a likely series of reactions. We suggest that at higher pressures, a H 2 ‐CH 4 ‐H 2 S‐S 2 ‐bearing fluid‐like phase, and at lower pressures, an equivalent gas, were able to infiltrate grain boundaries and fine fractures. Sulfidation to form troilite may have acted to maintain highly reduced gas/fluid conditions. The presence of hydrocarbons in ureilites supports a role for reduction driven by CHOS gas/fluid.
Preferential magma extraction from K- and metal-enriched source regions in the crust
Publisher: Springer Science and Business Media LLC
Date: 23-08-2009
Recognizing hydrothermal alteration through a granulite facies metamorphic overprint at the challenger Au deposit, South Australia
Publisher: Elsevier BV
Date: 08-2007
Reply to Németh and Garvie: Evidence for lonsdaleite in ureilite meteorites
Publisher: Proceedings of the National Academy of Sciences
Date: 08-05-2023
Effects of geodynamic setting on the redox state of fluids released by subducted mantle lithosphere
Publisher: Elsevier BV
Date: 04-2020
Fate of gold and base metals during metamorphic devolatilization of a pelite
Publisher: Elsevier BV
Date: 12-2015
Redistribution of Gold within Arsenopyrite and Lollingite during Pro- and Retrograde Metamorphism: Application to Timing of Mineralization
Publisher: Society of Economic Geologists
Date: 05-2001
A biogeochemical influence on the secular distribution of orogenic gold
Publisher: Society of Economic Geologists
Date: 21-02-2013
The Hemlo Gold Deposit, Ontario: An Example of Melting and Mobilization of a Precious Metal-Sulfosalt Assemblage during Amphibolite Facies Metamorphism and Deformation
Publisher: Society of Economic Geologists
Date: 09-2004
A small S-MIF signal in Martian regolith pyrite: Implications for the atmosphere
Publisher: Elsevier BV
Date: 12-2020
Implications of pyrite geochemistry for gold mineralisation and remobilisation in the Jiaodong gold district, northeast China
Publisher: Elsevier BV
Date: 12-2015
Aseismic refinement of orogenic gold systems
Publisher: Society of Economic Geologists
Date: 2020
DOI: 10.5382/ECONGEO.4692
Abstract: Orogenic Au deposits have contributed the majority of Au recovered globally throughout history. However, the mechanism that concentrates Au to extremely high bonanza grades in small domains within these deposits remains enigmatic. The volume of fluid required to provide extreme Au endowments in localized occurrences is not reflected in field observations (e.g., in the extent of quartz veining or hydrothermal alteration). Detailed optical, scanning and transmission electron microscopy, nanoscale secondary ion mass spectrometry, and 3-D neutron tomography have been used to investigate the processes responsible for development of anomalously high grade ore (upward of 3% Au) found in quartz veins at Fosterville gold mine (Victoria, Australia). Distinct textural settings of visible Au include (1) Au concentrated along pressure solution seams associated with wall-rock selvages, (2) as nano- to microscale dusty Au seams parallel to pressure solution seams, and (3) in microscale tension fractures perpendicular to stylolitic seams. The distribution of Au in arsenopyrite and pyrite hosted within pressure solution seams changes as a function of the extent of deformation. Sulfides in highly deformed pressure solution seams exclusively host Au as nano- to micrometer-sized clusters within features associated with corrosion and brittle failure, whereas sulfides in mildly deformed pressure solution seams have Au bound in the crystal structure. It is proposed that Au supersaturation in fluids introduced during seismic periods led to the deposition of abundant Au nanoparticles in quartz-carbonate veins. Subsequent pressure dissolution of vein quartz and carbonate during interseismic intervals allowed for episodic increase in the Au/quartz ratio and permitted liberation and migration of Au nanoparticles, promoting Au grain growth in favorable textural settings. Galvanic corrosion and brittle fracturing of auriferous sulfides during the interseismic period allowed additional remobilization and/or enrichment of sulfide-hosted Au. Repetition of this mechanism over the time scale of deposit formation acted to concentrate Au within the lodes. This Au ore upgrading model, referred to as “aseismic refinement,” provides a new insight for the genesis of ultrarich Au mineralization and, based on textures reported from many Au deposits, may be a globally significant component in the formation of orogenic Au deposits.
Atmospheric entry heating of micrometeorites at Earth and Mars: Implications for the survival of organics
Publisher: Wiley
Date: 15-07-2019
DOI: 10.1111/MAPS.13360
Hardness of nano- and microcrystalline lonsdaleite
Publisher: AIP Publishing
Date: 20-02-2023
DOI: 10.1063/5.0138911
Abstract: Lonsdaleite is a hexagonal allotrope of carbon found in nature in meteorites and at meteorite impact sites. It has been predicted to have an indentation hardness greater than cubic diamond by first principles calculations. However, this has not been demonstrated experimentally. Here, nanoindentation was used to measure the hardness of two different lonsdaleite s les. One contains nanocrystalline lonsdaleite synthesized by high pressure compression of glassy carbon. The other is from a ureilite meteorite that contains lonsdaleite crystals up to ∼1 μm. The hardness of these two s les was determined using both the Oliver–Pharr and Meyer methods. Our results show that the hardness of the lonsdaleite s les is similar to that of diamond therefore, there is no evidence that these forms of polycrystalline lonsdaleite are significantly harder than similar forms of diamond.
Ancient micrometeorites suggestive of an oxygen-rich Archaean upper atmosphere
Publisher: Springer Science and Business Media LLC
Date: 11-05-2016
DOI: 10.1038/NATURE17678
Abstract: It is widely accepted that Earth's early atmosphere contained less than 0.001 per cent of the present-day atmospheric oxygen (O2) level, until the Great Oxidation Event resulted in a major rise in O2 concentration about 2.4 billion years ago. There are multiple lines of evidence for low O2 concentrations on early Earth, but all previous observations relate to the composition of the lower atmosphere in the Archaean era to date no method has been developed to s le the Archaean upper atmosphere. We have extracted fossil micrometeorites from limestone sedimentary rock that had accumulated slowly 2.7 billion years ago before being preserved in Australia's Pilbara region. We propose that these micrometeorites formed when sand-sized particles entered Earth's atmosphere and melted at altitudes of about 75 to 90 kilometres (given an atmospheric density similar to that of today). Here we show that the FeNi metal in the resulting cosmic spherules was oxidized while molten, and quench-crystallized to form spheres of interlocking dendritic crystals primarily of magnetite (Fe3O4), with wüstite (FeO)+metal preserved in a few particles. Our model of atmospheric micrometeorite oxidation suggests that Archaean upper-atmosphere oxygen concentrations may have been close to those of the present-day Earth, and that the ratio of oxygen to carbon monoxide was sufficiently high to prevent noticeable inhibition of oxidation by carbon monoxide. The anomalous sulfur isotope (Δ(33)S) signature of pyrite (FeS2) in seafloor sediments from this period, which requires an anoxic surface environment, implies that there may have been minimal mixing between the upper and lower atmosphere during the Archaean.
The variability of ruthenium in chromite from chassignite and olivine-phyric shergottite meteorites: New insights into the behavior of PGE and sulfur in Martian magmatic systems
Publisher: Wiley
Date: 27-11-2017
DOI: 10.1111/MAPS.12795
Magmatic sulfide formation by reduction of oxidized arc basalt
Publisher: Oxford University Press (OUP)
Date: 20-04-2012
What metal-troilite textures can tell us about post-impact metamorphism in chondrite meteorites
Publisher: Wiley
Date: 08-2009
Wetting facilitates late-stage segregation of precious metal-enriched sulfosalt melt in magmatic sulfide systems
Publisher: Geological Society of America
Date: 10-2010
DOI: 10.1130/G31263.1
Colloidal origin of microbands in banded iron formations
Publisher: European Association of Geochemistry
Date: 04-2017
On the Initiation of Metamorphic Sulfide Anatexis
Publisher: Oxford University Press (OUP)
Date: 30-11-2006
Grade distribution of the Giant Ok Tedi Cu-Au deposit, Papua New Guinea-a reply
Publisher: Society of Economic Geologists
Date: 15-05-2014
Displacement of the Proterozoic Century Ore Deposit at the Edge of an Ordovician Meteorite Impact Crater, Queensland
Publisher: Society of Economic Geologists
Date: 05-2019
DOI: 10.5382/ECONGEO.4639
Smoking gun for thallium geochemistry in volcanic arcs: Nataliyamalikite, TlI, a new thallium mineral from an active fumarole at Avacha Volcano, Kamchatka Peninsula, Russia
Publisher: Mineralogical Society of America
Date: 08-2017
DOI: 10.2138/AM-2017-6057
Ore shoots in folded and fractured rocks – Insights from 3D modelling of the Fosterville gold deposit (Victoria, Australia)
Publisher: Elsevier BV
Date: 03-2020
The mineralogy and petrology of I-type cosmic spherules: Implications for their sources, origins and identification in sedimentary rocks
Publisher: Elsevier BV
Date: 12-2017
PARTIAL MELTING OF SULFIDE ORE DEPOSITS DURING MEDIUM- AND HIGH-GRADE METAMORPHISM
Publisher: Mineralogical Association of Canada
Date: 02-2002
Windows of metamorphic sulfur liberation in the crust: Implications for gold deposit genesis
Publisher: Elsevier BV
Date: 06-2010
Recycling of Proterozoic crust in Pleistocene juvenile magma and rapid formation of the Ok Tedi porphyry Cu-Au deposit, Papua New Guinea
Publisher: Elsevier BV
Date: 02-2010
Three mechanisms of ore re-mobilisation during amphibolite facies metamorphism at the Montauban Zn-Pb-Au-Ag deposit
Publisher: Springer Science and Business Media LLC
Date: 08-03-2007
Restriction of parent body heating by metal-troilite melting: Thermal models for the ordinary chondrites
Publisher: Wiley
Date: 22-03-2014
DOI: 10.1111/MAPS.12280
Incipient metal and sulfur extraction during melting of metasomatised mantle
Publisher: Elsevier BV
Date: 12-2022
Geochronological constraints on the polymetamorphic evolution of the granulite-hosted Challenger gold deposit: implications for assembly of the northwest Gawler Craton*
Publisher: Wiley
Date: 02-2004
Microbial populations of stony meteorites: Substrate controls on first colonizers
Publisher: Frontiers Media SA
Date: 30-06-2017
Sulfur isotope evolution in sulfide ores from Western Alps: Assessing the influence of subduction-related metamorphism
Publisher: American Geophysical Union (AGU)
Date: 10-2014
DOI: 10.1002/2014GC005459
Tiny particles building huge ore deposits – Particle-based crystallisation in banded iron formation-hosted iron ore deposits (Hamersley Province, Australia)
Publisher: Elsevier BV
Date: 2019
Eukaryotic Colonization of Micrometer-Scale Cracks in Rocks: A “Microfluidics” Experiment Using Naturally Weathered Meteorites from the Nullarbor Plain, Australia
Publisher: Mary Ann Liebert Inc
Date: 03-2020
Abstract: The advent of microfluidics has revolutionized the way we understand how microorganisms propagate through microporous spaces. Here, we apply this understanding to the study of how endolithic environmental microorganisms colonize the interiors of sterile rock. The substrates used for our study are stony meteorites from the Nullarbor Plain, Australia a semiarid limestone karst that provides an ideal setting for preserving meteorites. Periodic flooding of the Nullarbor provides a mechanism by which microorganisms and exogenous nutrients may infiltrate meteorites. Our laboratory experiments show that environmental microorganisms reach depths greater than 400 μm by propagating through existing brecciation, passing through cracks no wider than the diameter of a resident cell (
Evidence of sub-arc mantle oxidation by sulphur and carbon
Publisher: European Association of Geochemistry
Date: 2017
Fe-carbide and Fe-sulfide liquid immiscibility in IAB meteorite, Campo del Cielo: Implications for iron meteorite chemistry and planetesimal core compositions
Publisher: Elsevier BV
Date: 09-2013
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