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Andrew P. Roberts
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Journal Article

Bacterial magnetofossil evidence for enhanced Pacific Ocean respired carbon storage during buildup of Antarctic glaciation

Dunfan Wang, Yihui Chen, Yan Liu, Andrew P. Roberts, Eelco J. Rohling, Xiangyu Zhao, Xu Zhang, Jinhua Li, Weiqi Yao, Xuejiao Qu, Xianfeng Tan, Qingsong Liu
Journal: Geology
Published: 26 April 2024
Geology (2024) 52 (7): 570–574.
DOI: https://doi.org/10.1130/G52016.1
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Journal Article

Iron fertilization–induced deoxygenation of eastern equatorial Pacific Ocean intermediate waters during the Paleocene–Eocene thermal maximum

Xiaodong Jiang, Xiangyu Zhao, Xiaoming Sun, Andrew P. Roberts, Appy Sluijs, Yu-Min Chou, Weiqi Yao, Jieqi Xing, Weijie Zhang, Qingsong Liu
Journal: Geology
Published: 05 February 2024
Geology (2024) 52 (4): 276–281.
DOI: https://doi.org/10.1130/G51770.1
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View PDF for article title, Iron fertilization–induced deoxygenation of eastern equatorial Pacific Ocean intermediate waters during the Paleocene–Eocene thermal maximum
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Journal Article

A novel authigenic magnetite source for sedimentary magnetization

Zhiyong Lin, Xiaoming Sun, Andrew P. Roberts, Harald Strauss, Yang Lu, Xin Yang, Junli Gong, Guanhua Li, Benjamin Brunner, Jörn Peckmann
Journal: Geology
Published: 10 December 2020
Geology (2021) 49 (4): 360–365.
DOI: https://doi.org/10.1130/G48069.1
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Journal Article

Mechanism for enhanced eolian dust flux recorded in North Pacific Ocean sediments since 4.0 Ma: Aridity or humidity at dust source areas in the Asian interior?

Qiang Zhang, Qingsong Liu, Andrew P. Roberts, Juan C. Larrasoaña, Xuefa Shi, Chunsheng Jin
Journal: Geology
Published: 19 November 2019
Geology (2020) 48 (1): 77–81.
DOI: https://doi.org/10.1130/G46862.1
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View PDF for article title, Mechanism for enhanced eolian dust flux recorded in North Pacific Ocean sediments since 4.0 Ma: Aridity or humidity at dust source areas in the Asian interior?
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Journal Article

A new model for transformation of ferrihydrite to hematite in soils and sediments

Zhaoxia Jiang, Qingsong Liu, Andrew P. Roberts, Vidal Barrón, José Torrent, Qiang Zhang
Journal: Geology
Published: 08 October 2018
Geology (2018) 46 (11): 987–990.
DOI: https://doi.org/10.1130/G45386.1
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View PDF for article title, A new model for transformation of ferrihydrite to hematite in soils and sediments
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Journal Article

Palaeomagnetic evidence for the age of the Cumbrian and Manx hematite ore deposits: implications for the origin of hematite mineralization at the margins of the East Irish Sea Basin, UK

Stephen F. Crowley, John D. A. Piper, Turki Bamarouf, Andrew P. Roberts
Published: 23 October 2013
Journal of the Geological Society (2014) 171 (1): 49–64.
DOI: https://doi.org/10.1144/jgs2013-004
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View PDF for article title, Palaeomagnetic evidence for the age of the Cumbrian and Manx hematite ore deposits: implications for the origin of hematite mineralization at the margins of the East Irish Sea Basin, UK
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Journal Article

ENIGMATIC X-RAY MAGNETIC CIRCULAR DICHROISM IN GREIGITE (Fe 3 S 4 )

Liao Chang, Richard A.D. Pattrick, Gerrit van der Laan, Victoria S. Coker, Andrew P. Roberts
Published: 01 June 2012
The Canadian Mineralogist (2012) 50 (3): 667–674.
DOI: https://doi.org/10.3749/canmin.50.3.667
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Journal Article

The middle Eocene climatic optimum event in the Contessa Highway section, Umbrian Apennines, Italy

Luigi Jovane, Fabio Florindo, Rodolfo Coccioni, Jaume Dinarès-Turell, Andrea Marsili, Simonetta Monechi, Andrew P. Roberts, Mario Sprovieri
Journal: GSA Bulletin
Published: 01 March 2007
GSA Bulletin (2007) 119 (3-4): 413–427.
DOI: https://doi.org/10.1130/B25917.1
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View PDF for article title, The middle Eocene climatic optimum event in the Contessa Highway section, Umbrian Apennines, Italy
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Journal Article

Tectonic and geochronological implications of variably timed magnetizations carried by authigenic greigite in marine sediments from New Zealand

Christopher J. Rowan, Andrew P. Roberts
Journal: Geology
Published: 01 July 2005
Geology (2005) 33 (7): 553–556.
DOI: https://doi.org/10.1130/G21382.1
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View PDF for article title, Tectonic and geochronological implications of variably timed magnetizations carried by authigenic greigite in marine sediments from New Zealand
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Journal Article

Eocene-Oligocene magnetobiochronology of ODP Sites 689 and 690, Maud Rise, Weddell Sea, Antarctica

Fabio Florindo, Andrew P. Roberts
Journal: GSA Bulletin
Published: 01 January 2005
GSA Bulletin (2005) 117 (1-2): 46–66.
DOI: https://doi.org/10.1130/B25541.1
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View PDF for article title, Eocene-Oligocene magnetobiochronology of ODP Sites 689 and 690, Maud Rise, Weddell Sea, Antarctica
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Journal Article

El Niño–Southern Oscillation signal associated with middle Holocene climate change in intercorrelated terrestrial and marine sediment cores, North Island, New Zealand

Basil Gomez, Lionel Carter, Noel A. Trustrum, Alan S. Palmer, Andrew P. Roberts
Journal: Geology
Published: 01 August 2004
Geology (2004) 32 (8): 653–656.
DOI: https://doi.org/10.1130/G20720.1
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View PDF for article title, El Niño–Southern Oscillation signal associated with middle Holocene climate change in intercorrelated terrestrial and marine sediment cores, North Island, New Zealand
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Journal Article

Integrated chronostratigraphic calibration of the Oligocene-Miocene boundary at 24.0 ± 0.1 Ma from the CRP-2A drill core, Ross Sea, Antarctica: REPLY

Gary S. Wilson, Andrew P. Roberts, David M. Harwood, Chris R. Fielding, David K. Watkins, Timothy R. Naish, Fabio Florindo, Leonardo Sagnotti, Reed P. Scherer, Giuliana Villa, Mark Lavelle, William C. McIntosh, Steven M. Bohaty, Kenneth L. Verosub
Journal: Geology
Published: 01 January 2004
Geology (2003) 31 (1): e11–e12.
DOI: https://doi.org/10.1130/0091-7613-31.1.e11.b
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View PDF for article title, Integrated chronostratigraphic calibration of the Oligocene-Miocene boundary at 24.0 ± 0.1 Ma from the CRP-2A drill core, Ross Sea, Antarctica: REPLY
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Journal Article

Integrated chronostratigraphic calibration of the Oligocene-Miocene boundary at 24.0 ± 0.1 Ma from the CRP-2A drill core, Ross Sea, Antarctica

Gary S. Wilson, Mark Lavelle, William C. McIntosh, Andrew P. Roberts, David M. Harwood, David K. Watkins, Giuliana Villa, Steven M. Bohaty, Chris R. Fielding, Fabio Florindo, Leonardo Sagnotti, Timothy R. Naish, Reed P. Scherer, Kenneth L. Verosub
Journal: Geology
Published: 01 November 2002
Geology (2002) 30 (11): 1043–1046.
DOI: https://doi.org/10.1130/0091-7613(2002)030<1043:ICCOTO>2.0.CO;2
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View PDF for article title, Integrated chronostratigraphic calibration of the Oligocene-Miocene boundary at 24.0 ± 0.1 Ma from the CRP-2A drill core, Ross Sea, Antarctica
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Book Chapter

Recognition of primary and diagenetic magnetizations to determine the magnetic polarity record and timing of deposition of the moat-fill rocks of the Oligocene Creede Caldera, Colorado

Author(s)
Richard L. Reynolds, Joseph G. Rosenbaum, Donald S. Sweetkind, Marvin A. Lanphere, Andrew P. Roberts, Kenneth L. Verosub
Abstract
View PDF for content titled, Recognition of primary and diagenetic magnetizations to determine the magnetic polarity record and timing of deposition of the moat-fill rocks of the Oligocene Creede Caldera, Colorado
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Journal Article

Magnetobiostratigraphic chronology of the Eocene—Oligocene transition in the CIROS-1 core, Victoria Land margin, Antarctica: Implications for Antarctic glacial history

Gary S. Wilson, Andrew P. Roberts, Kenneth L. Verosub, Fabio Florindo, Leonardo Sagnotti
Journal: GSA Bulletin
Published: 01 January 1998
GSA Bulletin (1998) 110 (1): 35–47.
DOI: https://doi.org/10.1130/0016-7606(1998)110<0035:MCOTEO>2.3.CO;2
View PDF for article title, Magnetobiostratigraphic chronology of the Eocene—Oligocene transition in the CIROS-1 core, Victoria Land margin, Antarctica: Implications for Antarctic glacial history
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Journal Article

Magnetostratigraphic chronology of late Miocene to early Pliocene biostratigraphic and oceanographic events in New Zealand

ANDREW P. ROBERTS, GILLIAN M. TURNER, PAUL P. VELLA
Journal: GSA Bulletin
Published: 01 May 1994
GSA Bulletin (1994) 106 (5): 665–683.
DOI: https://doi.org/10.1130/0016-7606(1994)106<0665:MCOLMT>2.3.CO;2
View PDF for article title, Magnetostratigraphic chronology of late Miocene to early Pliocene biostratigraphic and oceanographic events in New Zealand
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