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Jahandar Ramezani
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Journal Article

Magnetostratigraphy and U-Pb geochronology of the middle Eocene Bridger Formation (Wyoming, USA): Implications for the age and correlation of the Bridgerian/Uintan NALMA boundary and calibration of the Geomagnetic Polarity Time Scale

Kaori Tsukui, John J. Flynn, Sidney R. Hemming, Jahandar Ramezani, Malka L. Machlus, Clarita Nuñez, Steven J. McCarroll, Samuel A. Bowring
Published: 07 March 2025
GSA Bulletin (2025)
DOI: https://doi.org/10.1130/B37223.1
View PDF for article title, Magnetostratigraphy and U-Pb geochronology of the middle Eocene Bridger Formation (Wyoming, USA): Implications for the age and correlation of the Bridgerian/Uintan NALMA boundary and calibration of the Geomagnetic Polarity Time Scale
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Journal Article

Updating the Upper Cretaceous (Campanian) Two Medicine Formation of Montana: Lithostratigraphic revisions, new CA-ID-TIMS U-Pb ages, and a calibrated framework for dinosaur occurrences

Raymond R. Rogers, John R. Horner, Jahandar Ramezani, Eric M. Roberts, David J. Varricchio
Published: 17 July 2024
GSA Bulletin (2025) 137 (1-2): 315–340.
DOI: https://doi.org/10.1130/B37498.1
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View PDF for article title, Updating the Upper Cretaceous (Campanian) Two Medicine Formation of Montana: Lithostratigraphic revisions, new CA-ID-TIMS U-Pb ages, and a calibrated framework for dinosaur occurrences
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Journal Article

Recommendations for the reporting and interpretation of isotope dilution U-Pb geochronological information

Dan Condon, Blair Schoene, Mark Schmitz, Urs Schaltegger, Ryan B. Ickert, Yuri Amelin, Lars E. Augland, Kevin R. Chamberlain, Drew S. Coleman, James N. Connelly, Fernando Corfu, James L. Crowley, Joshua H.F.L. Davies, Steven W. Denyszyn, Michael P. Eddy, Sean P. Gaynor, Larry M. Heaman, Magdalena H. Huyskens, Sandra Kamo, Jennifer Kasbohm, C. Brenhin Keller, Scott A. MacLennan, Noah M. McLean, Stephen Noble, Maria Ovtcharova, André Paul, Jahandar Ramezani, Matt Rioux, Diana Sahy, James S. Scoates, Dawid Szymanowski, Simon Tapster, Marion Tichomirowa, Corey J. Wall, Jörn-Frederik Wotzlaw, Chuan Yang, Qing-Zhu Yin
Published: 01 April 2024
GSA Bulletin (2024) 136 (9-10): 4233–4251.
DOI: https://doi.org/10.1130/B37321.1
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View PDF for article title, Recommendations for the reporting and interpretation of isotope dilution U-Pb geochronological information
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Journal Article

The “Judith River–Belly River problem” revisited (Montana-Alberta-Saskatchewan): New perspectives on the correlation of Campanian dinosaur-bearing strata based on a revised stratigraphic model updated with CA-ID-TIMS U-Pb geochronology

Raymond R. Rogers, David A. Eberth, Jahandar Ramezani
Published: 28 July 2023
GSA Bulletin (2024) 136 (3-4): 1221–1237.
DOI: https://doi.org/10.1130/B36999.1
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View PDF for article title, The “Judith River–Belly River problem” revisited (Montana-Alberta-Saskatchewan): New perspectives on the correlation of Campanian dinosaur-bearing strata based on a revised stratigraphic model updated with CA-ID-TIMS U-Pb geochronology
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Journal Article

Calibrating the Early Cretaceous Urho Pterosaur Fauna in Junggar Basin and implications for the evolution of the Jehol Biota

Daran Zheng, Su-Chin Chang, Jahandar Ramezani, Xing Xu, Honghe Xu, He Wang, Rui Pei, Yanan Fang, Jun Wang, Bo Wang, Haichun Zhang
Published: 10 May 2023
GSA Bulletin (2024) 136 (1-2): 765–773.
DOI: https://doi.org/10.1130/B36795.1
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View PDF for article title, Calibrating the Early Cretaceous Urho Pterosaur Fauna in Junggar Basin and implications for the evolution of the Jehol Biota
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Journal Article

Climate forcing of terrestrial carbon sink during the Middle Jurassic greenhouse climate: Chronostratigraphic analysis of the Yan’an Formation, Ordos Basin, North China

Zhihui Zhang, Tiantian Wang, Jahandar Ramezani, Dawei Lv, Chengshan Wang
Published: 16 December 2020
GSA Bulletin (2021) 133 (7-8): 1723–1733.
DOI: https://doi.org/10.1130/B35765.1
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View PDF for article title, Climate forcing of terrestrial carbon sink during the Middle Jurassic greenhouse climate: Chronostratigraphic analysis of the Yan’an Formation, Ordos Basin, North China
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Journal Article

New age constraints on the duration and origin of the Late Ordovician Guttenberg δ 13 C carb excursion from high-precision U-Pb geochronology of K-bentonites

J. Garrecht Metzger, Jahandar Ramezani, Samuel A. Bowring, David A. Fike
Published: 28 July 2020
GSA Bulletin (2021) 133 (3-4): 580–590.
DOI: https://doi.org/10.1130/B35688.1
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View PDF for article title, New age constraints on the duration and origin of the Late Ordovician Guttenberg δ 13 C carb excursion from high-precision U-Pb geochronology of K-bentonites
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Journal Article

Failed rifting and fast drifting: Midcontinent Rift development, Laurentia’s rapid motion and the driver of Grenvillian orogenesis

Nicholas L. Swanson-Hysell, Jahandar Ramezani, Luke M. Fairchild, Ian R. Rose
Published: 29 January 2019
GSA Bulletin (2019) 131 (5-6): 913–940.
DOI: https://doi.org/10.1130/B31944.1
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View PDF for article title, Failed rifting and fast drifting: Midcontinent Rift development, Laurentia’s rapid motion and the driver of Grenvillian orogenesis
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Journal Article

A sudden end-Permian mass extinction in South China

Shu-Zhong Shen, Jahandar Ramezani, Jun Chen, Chang-Qun Cao, Douglas H. Erwin, Hua Zhang, Lei Xiang, Shane D. Schoepfer, Charles M. Henderson, Quan-Feng Zheng, Samuel A. Bowring, Yue Wang, Xian-Hua Li, Xiang-Dong Wang, Dong-Xun Yuan, Yi-Chun Zhang, Lin Mu, Jun Wang, Ya-Sheng Wu
Published: 19 September 2018
GSA Bulletin (2019) 131 (1-2): 205–223.
DOI: https://doi.org/10.1130/B31909.1
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View PDF for article title, A sudden end-Permian mass extinction in South China
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Journal Article

Extension-facilitated pulsed S-I-A-type “flare-up” magmatism at 370 Ma along the southeast Gondwana margin in New Zealand: Insights from U-Pb geochronology and geochemistry

Rose Turnbull, Andy Tulloch, Jahandar Ramezani, Richard Jongens
Published: 01 September 2016
GSA Bulletin (2016) 128 (9-10): 1500–1520.
DOI: https://doi.org/10.1130/B31426.1
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View PDF for article title, Extension-facilitated pulsed S-I-A-type “flare-up” magmatism at 370 Ma along the southeast Gondwana margin in New Zealand: Insights from U-Pb geochronology and geochemistry
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Journal Article

High-precision U-Pb zircon geochronology of the Late Triassic Chinle Formation, Petrified Forest National Park (Arizona, USA): Temporal constraints on the early evolution of dinosaurs

Jahandar Ramezani, Gregory D. Hoke, David E. Fastovsky, Samuel A. Bowring, François Therrien, Steven I. Dworkin, Stacy C. Atchley, Lee C. Nordt
Published: 01 November 2011
GSA Bulletin (2011) 123 (11-12): 2142–2159.
DOI: https://doi.org/10.1130/B30433.1
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View PDF for article title, High-precision U-Pb zircon geochronology of the Late Triassic Chinle Formation, Petrified Forest National Park (Arizona, USA): Temporal constraints on the early evolution of dinosaurs
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Journal Article

Geology and thermochronology of Tertiary Cordilleran-style metamorphic core complexes in the Saghand region of central Iran

Charles Verdel, Brian P. Wernicke, Jahandar Ramezani, Jamshid Hassanzadeh, Paul R. Renne, Terry L. Spell
Published: 01 July 2007
GSA Bulletin (2007) 119 (7-8): 961–977.
DOI: https://doi.org/10.1130/B26102.1
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View PDF for article title, Geology and thermochronology of Tertiary Cordilleran-style metamorphic core complexes in the Saghand region of central Iran
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