1-10 OF 10
Results shown limited to content with bounding coordinates.
Galen P. Halverson
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

Linking paleocontinents through triple oxygen isotope anomalies

Peter W. Crockford, Malcolm S.W. Hodgskiss, Gabriel J. Uhlein, Fabricio Caxito, Justin A. Hayles, Galen P. Halverson
Published: 12 December 2017
Geology (2017) 46 (2): 179-182.
DOI: https://doi.org/10.1130/G39470.1
FIGURES
PDF
Purchase
Add to Citation Manager
Journal Article

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

Timothy M. Gibson, Patrick M. Shih, Vivien M. Cumming, Woodward W. Fischer, Peter W. Crockford, Malcolm S.W. Hodgskiss, Sarah Wörndle, Robert A. Creaser, Robert H. Rainbird, Thomas M. Skulski, Galen P. Halverson
Published: 08 December 2017
Geology (2017) 46 (2): 135-138.
DOI: https://doi.org/10.1130/G39829.1
FIGURES
PDF
Purchase
Add to Citation Manager
Journal Article

Introducing the Xenoconformity

Galen P. Halverson
Published: 01 July 2017
Geology (2017) 45 (7): 671-672.
DOI: https://doi.org/10.1130/focus072017.1
FIGURES
PDF
Add to Citation Manager
Journal Article

Bacterial sulfur disproportionation constrains timing of Neoproterozoic oxygenation

Marcus Kunzmann, Thi Hao Bui, Peter W. Crockford, Galen P. Halverson, Clint Scott, Timothy W. Lyons, Boswell A. Wing
Published: 01 March 2017
Geology (2017) 45 (3): 207-210.
DOI: https://doi.org/10.1130/G38602.1
PDF
Purchase
Add to Citation Manager
Journal Article

A shale-hosted Cr isotope record of low atmospheric oxygen during the Proterozoic

Devon B. Cole, Christopher T. Reinhard, Xiangli Wang, Bleuenn Gueguen, Galen P. Halverson, Timothy Gibson, Malcolm S.W. Hodgskiss, N. Ryan McKenzie, Timothy W. Lyons, Noah J. Planavsky
Published: 01 July 2016
Geology (2016) 44 (7): 555-558.
DOI: https://doi.org/10.1130/G37787.1
PDF
Purchase
Add to Citation Manager
Journal Article

Marine organic matter cycling during the Ediacaran Shuram excursion

Carina Lee, Gordon D. Love, Woodward W. Fischer, John P. Grotzinger, Galen P. Halverson
Published: 01 December 2015
Geology (2015) 43 (12): 1103-1106.
DOI: https://doi.org/10.1130/G37236.1
FIGURES
PDF
Purchase
Add to Citation Manager
Journal Article

Organic-walled microfossil assemblages from glacial and interglacial Neoproterozoic units of Australia and Svalbard

Leigh Anne Riedman, Susannah M. Porter, Galen P. Halverson, Matthew T. Hurtgen, Christopher K. Junium
Published: 01 November 2014
Geology (2014) 42 (11): 1011-1014.
DOI: https://doi.org/10.1130/G35901.1
FIGURES
PDF
Purchase
Add to Citation Manager
Journal Article

Zn isotope evidence for immediate resumption of primary productivity after snowball Earth

Marcus Kunzmann, Galen P. Halverson, Paolo A. Sossi, Timothy D. Raub, Justin L. Payne, Jason Kirby
Published: 01 January 2013
Geology (2013) 41 (1): 27-30.
DOI: https://doi.org/10.1130/G33422.1
FIGURES
PDF
Purchase
Add to Citation Manager
Journal Article

Neoproterozoic sulfur isotopes, the evolution of microbial sulfur species, and the burial efficiency of sulfide as sedimentary pyrite

Matthew T. Hurtgen, Michael A. Arthur, Galen P. Halverson
Published: 01 January 2005
Geology (2005) 33 (1): 41-44.
DOI: https://doi.org/10.1130/G20923.1
FIGURES
PDF
Purchase
Add to Citation Manager
Journal Article

Are Proterozoic cap carbonates and isotopic excursions a record of gas hydrate destabilization following Earth's coldest intervals?: COMMENT: COMMENT

Paul F. Hoffman, Galen P. Halverson, John P. Grotzinger
Published: 01 March 2002
Geology (2002) 30 (3): 286-287.
DOI: https://doi.org/10.1130/0091-7613(2002)030<0286:APCCAI>2.0.CO;2
PDF
Purchase
Add to Citation Manager