List of works - Kenneth H. Williford

A Field Guide to Finding Fossils on Mars

scientific article published on 24 May 2018

A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile

scientific article published on 25 April 2018

A look back: The drilling campaign of the Curiosity rover during the Mars Science Laboratory's Prime Mission

scientific article

A new model for silicification of cyanobacteria in Proterozoic tidal flats

scientific article

A review of microbial‐environmental interactions recorded in Proterozoic carbonate‐hosted chert

scientific article published on 21 October 2022

An anaerobic ∼3400 Ma shallow-water microbial consortium: Presumptive evidence of Earth’s Paleoarchean anoxic atmosphere

article by J. William Schopf et al published September 2017 in Precambrian Research

An extended organic carbon-isotope record across the Triassic–Jurassic boundary in the Queen Charlotte Islands, British Columbia, Canada

article

An organic record of terrestrial ecosystem collapse and recovery at the Triassic–Jurassic boundary in East Greenland

article

Aqueous alteration processes in Jezero crater, Mars−implications for organic geochemistry

journal article

BIOSIGNATURE PRESERVATION AIDED BY ORGANIC-CATION INTERACTIONS IN PROTEROZOIC TIDAL ENVIRONMENTS

scientific article published on 15 September 2022

Biological regulation of atmospheric chemistry en route to planetary oxygenation ⬇️

scientific article published on 13 March 2017

Carbon isotopes of Proterozoic filamentous microfossils: SIMS analyses of ancient cyanobacteria from two disparate shallow-marine cherts

scientific article published in July 2021

Compositionally and density stratified igneous terrain in Jezero crater, Mars

scientific article published on 26 August 2022

Constraining atmospheric oxygen and seawater sulfate concentrations during Paleoproterozoic glaciation: In situ sulfur three-isotope microanalysis of pyrite from the Turee Creek Group, Western Australia

article

Deep UV Raman spectroscopy for planetary exploration: The search for in situ organics

scientific article

Deep-UV Raman Spectroscopy of Carbonaceous Precambrian Microfossils: Insights into the Search for Past Life on Mars

scientific article published in October 2022

Development of in situ sulfur four-isotope analysis with multiple Faraday cup detectors by SIMS and application to pyrite grains in a Paleoproterozoic glaciogenic sandstone

scholarly article

Episodic photic zone euxinia in the northeastern Panthalassic Ocean during the end-Triassic extinction

scientific article

Extreme 13C-depletions and organic sulfur content argue for S-fueled anaerobic methane oxidation in 2.72 Ga old stromatolites

scholarly article

Field and laboratory validation of remote rover operations Science Team findings: The CanMars Mars Sample Return analogue mission

From greenhouse to icehouse: Nitrogen biogeochemistry of an epeiric sea in the context of the oxygenation of the Late Devonian atmosphere/ocean system

scientific article published in 2019

Lipid biomarker stratigraphic records through the Late Devonian Frasnian/Famennian boundary: Comparison of high- and low-latitude epicontinental marine settings

scientific article published in August 2016

Mars 2020 Mission Overview ⬇️

scholarly article about the Mars 2020 mission published in December 2020

Microbial community composition and dolomite formation in the hypersaline microbial mats of the Khor Al-Adaid sabkhas, Qatar

scientific article published on 07 January 2019

Microbially influenced formation of Neoarchean ooids

scientific article published on 18 November 2018

Microstructure-specific carbon isotopic signatures of organic matter from ∼3.5 Ga cherts of the Pilbara Craton support a biologic origin

New insights into the origin of perylene in geological samples

article

Organo-mineral associations in chert of the 3.5 Ga Mount Ada Basalt raise questions about the origin of organic matter in Paleoarchean hydrothermally influenced sediments

scientific article published on 13 November 2019

Perseverance’s Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) Investigation

scientific article published on 25 May 2021

Photogeologic Map of the Perseverance Rover Field Site in Jezero Crater Constructed by the Mars 2020 Science Team ⬇️

article by Kathryn Stack Morgan et al published 3 November 2020 in Space Science Reviews

Preservation and detection of microstructural and taxonomic correlations in the carbon isotopic compositions of individual Precambrian microfossils

article

Reply to Dvořák et al.: Apparent evolutionary stasis of ancient subseafloor sulfur cycling biocoenoses

scientific article

Reply to comment on: “The organic carbon isotopic and paleontological record across the Triassic–Jurassic boundary at the candidate GSSP section at Ferguson Hill, Muller Canyon, Nevada, USA” by Ward et al. (2007)

scientific article published in March 2009

Simultaneous In Situ Analysis of Carbon and Nitrogen Isotope Ratios in Organic Matter by Secondary Ion Mass Spectrometry

Spatially-resolved isotopic study of carbon trapped in ∼3.43 Ga Strelley Pool Formation stromatolites

scientific article published in February 2018

Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis

scientific article

Testing the limits in a greenhouse ocean: Did low nitrogen availability limit marine productivity during the end-Triassic mass extinction?

scientific article published in 2016

Texture-specific isotopic compositions in 3.4Gyr old organic matter support selective preservation in cell-like structures

article

The CanMars Mars Sample Return analogue mission

scientific article published in February 2019

The NASA Mars 2020 Rover Mission and the Search for Extraterrestrial Life

scientific article published in 2018

The Taphonomy of Proterozoic Microbial Mats and Implications for Early Diagenetic Silicification

scientific article published on 14 January 2019

The molecular and isotopic effects of hydrothermal alteration of organic matter in the Paleoproterozoic McArthur River Pb/Zn/Ag ore deposit

scientific article published in January 2011

List of works by Kenneth H. Williford

A Field Guide to Finding Fossils on Mars

A late Quaternary paleoenvironmental record in sand dunes of the northern Atacama Desert, Chile

A look back: The drilling campaign of the Curiosity rover during the Mars Science Laboratory's Prime Mission

A new model for silicification of cyanobacteria in Proterozoic tidal flats

A review of microbial‐environmental interactions recorded in Proterozoic carbonate‐hosted chert

An anaerobic ∼3400 Ma shallow-water microbial consortium: Presumptive evidence of Earth’s Paleoarchean anoxic atmosphere

An extended organic carbon-isotope record across the Triassic–Jurassic boundary in the Queen Charlotte Islands, British Columbia, Canada

An organic record of terrestrial ecosystem collapse and recovery at the Triassic–Jurassic boundary in East Greenland

Aqueous alteration processes in Jezero crater, Mars−implications for organic geochemistry

BIOSIGNATURE PRESERVATION AIDED BY ORGANIC-CATION INTERACTIONS IN PROTEROZOIC TIDAL ENVIRONMENTS

Biological regulation of atmospheric chemistry en route to planetary oxygenation ⬇️

Carbon isotopes of Proterozoic filamentous microfossils: SIMS analyses of ancient cyanobacteria from two disparate shallow-marine cherts

Compositionally and density stratified igneous terrain in Jezero crater, Mars

Constraining atmospheric oxygen and seawater sulfate concentrations during Paleoproterozoic glaciation: In situ sulfur three-isotope microanalysis of pyrite from the Turee Creek Group, Western Australia

Deep UV Raman spectroscopy for planetary exploration: The search for in situ organics

Deep-UV Raman Spectroscopy of Carbonaceous Precambrian Microfossils: Insights into the Search for Past Life on Mars

Development of in situ sulfur four-isotope analysis with multiple Faraday cup detectors by SIMS and application to pyrite grains in a Paleoproterozoic glaciogenic sandstone

Episodic photic zone euxinia in the northeastern Panthalassic Ocean during the end-Triassic extinction

Extreme 13C-depletions and organic sulfur content argue for S-fueled anaerobic methane oxidation in 2.72 Ga old stromatolites

Field and laboratory validation of remote rover operations Science Team findings: The CanMars Mars Sample Return analogue mission

From greenhouse to icehouse: Nitrogen biogeochemistry of an epeiric sea in the context of the oxygenation of the Late Devonian atmosphere/ocean system

Lipid biomarker stratigraphic records through the Late Devonian Frasnian/Famennian boundary: Comparison of high- and low-latitude epicontinental marine settings

Mars 2020 Mission Overview ⬇️

Microbial community composition and dolomite formation in the hypersaline microbial mats of the Khor Al-Adaid sabkhas, Qatar

Microbially influenced formation of Neoarchean ooids

Microstructure-specific carbon isotopic signatures of organic matter from ∼3.5 Ga cherts of the Pilbara Craton support a biologic origin

New insights into the origin of perylene in geological samples

Organo-mineral associations in chert of the 3.5 Ga Mount Ada Basalt raise questions about the origin of organic matter in Paleoarchean hydrothermally influenced sediments

Perseverance’s Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) Investigation

Photogeologic Map of the Perseverance Rover Field Site in Jezero Crater Constructed by the Mars 2020 Science Team ⬇️

Preservation and detection of microstructural and taxonomic correlations in the carbon isotopic compositions of individual Precambrian microfossils

Reply to Dvořák et al.: Apparent evolutionary stasis of ancient subseafloor sulfur cycling biocoenoses

Reply to comment on: “The organic carbon isotopic and paleontological record across the Triassic–Jurassic boundary at the candidate GSSP section at Ferguson Hill, Muller Canyon, Nevada, USA” by Ward et al. (2007)

Simultaneous In Situ Analysis of Carbon and Nitrogen Isotope Ratios in Organic Matter by Secondary Ion Mass Spectrometry

Spatially-resolved isotopic study of carbon trapped in ∼3.43 Ga Strelley Pool Formation stromatolites

Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis

Testing the limits in a greenhouse ocean: Did low nitrogen availability limit marine productivity during the end-Triassic mass extinction?

Texture-specific isotopic compositions in 3.4Gyr old organic matter support selective preservation in cell-like structures

The CanMars Mars Sample Return analogue mission

The NASA Mars 2020 Rover Mission and the Search for Extraterrestrial Life

The Taphonomy of Proterozoic Microbial Mats and Implications for Early Diagenetic Silicification

The molecular and isotopic effects of hydrothermal alteration of organic matter in the Paleoproterozoic McArthur River Pb/Zn/Ag ore deposit

Extreme 13C-depletions and organic sulfur content argue for S-fueled anaerobic methane oxidation in 2.72 Ga old stromatolites

Spatially-resolved isotopic study of carbon trapped in ∼3.43 Ga Strelley Pool Formation stromatolites