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Issues
Volume 48, Number 5
1 May 2020
ISSN 0091-7613
EISSN 1943-2682
In this Issue
Articles
Continental-scale geographic change across Zealandia during Paleogene subduction initiation
R. Sutherland; G.R. Dickens; P. Blum; C. Agnini; L. Alegret; G. Asatryan; J. Bhattacharya; A. Bordenave; L. Chang; J. Collot; M.J. Cramwinckel; E. Dallanave; M.K. Drake; S.J.G. Etienne; M. Giorgioni; M. Gurnis; D.T. Harper; H.-H.M. Huang; A.L. Keller; A.R. Lam; H. Li; H. Matsui; H.E.G. Morgans; C. Newsam; Y.-H. Park; K.M. Pascher; S.F. Pekar; D.E. Penman; S. Saito; W.R. Stratford; T. Westerhold; X. Zhou
Geology February 06, 2020, Vol.48, 419-424. doi:https://doi.org/10.1130/G47008.1
Redefining the Tonto Group of Grand Canyon and recalibrating the Cambrian time scale
K.E. Karlstrom; M.T. Mohr; M.D. Schmitz; F.A. Sundberg; S.M. Rowland; R. Blakey; J.R. Foster; L.J. Crossey; C.M. Dehler; J.W. Hagadorn
Geology February 14, 2020, Vol.48, 425-430. doi:https://doi.org/10.1130/G46755.1
A critical magma chamber size for volcanic eruptions
Geology February 06, 2020, Vol.48, 431-435. doi:https://doi.org/10.1130/G47045.1
Tsunami and tephra deposits record interactions between past eruptive activity and landslides at Stromboli volcano, Italy
Geology February 14, 2020, Vol.48, 436-440. doi:https://doi.org/10.1130/G47331.1
Asynchronous trilobite extinctions at the early to middle Cambrian transition
F.A. Sundberg; K.E. Karlstrom; G. Geyer; J.R. Foster; J.W. Hagadorn; M.T. Mohr; M.D. Schmitz; C.M. Dehler; L.J. Crossey
Geology February 14, 2020, Vol.48, 441-445. doi:https://doi.org/10.1130/G46913.1
Erupted zircon record of continental crust formation during mantle driven arc flare-ups
Geology February 14, 2020, Vol.48, 446-451. doi:https://doi.org/10.1130/G46991.1
Continuous evolution of oceanic crustal structure following an eruption at Axial Seamount, Juan de Fuca Ridge
Geology February 06, 2020, Vol.48, 452-456. doi:https://doi.org/10.1130/G46831.1
Magmatic duration of the Emeishan large igneous province: Insight from northern Vietnam
Geology February 06, 2020, Vol.48, 457-461. doi:https://doi.org/10.1130/G47076.1
Reconstructing Tonian seawater 87Sr/86Sr using calcite microspar
Ying Zhou; Philip A.E. Pogge von Strandmann; Maoyan Zhu; Hongfei Ling; Christina Manning; Da Li; Tianchen He; Graham A. Shields
Geology February 14, 2020, Vol.48, 462-467. doi:https://doi.org/10.1130/G46756.1
Sediment dynamics across gravel-sand transitions: Implications for river stability and floodplain recycling
Elizabeth H. Dingle; Hugh D. Sinclair; Jeremy G. Venditti; Mikaël Attal; Tim C. Kinnaird; Maggie Creed; Laura Quick; Jeffrey A. Nittrouer; Dilip Gautam
Geology February 14, 2020, Vol.48, 468-472. doi:https://doi.org/10.1130/G46909.1
Ultra-slow throw rates of polygonal fault systems
Geology February 27, 2020, Vol.48, 473-477. doi:https://doi.org/10.1130/G47221.1
Tracing metal sources for the giant McArthur River Zn-Pb deposit (Australia) using lead isotopes
Joséphine Gigon; Etienne Deloule; Julien Mercadier; David L. Huston; Antonin Richard; Irvine R. Annesley; Andrew S. Wygralak; Roger G. Skirrow; Terrence P. Mernagh; Kristian Masterman
Geology February 27, 2020, Vol.48, 478-482. doi:https://doi.org/10.1130/G47001.1
Silica diagenesis promotes early primary hydrocarbon migration
Geology March 18, 2020, Vol.48, 483-487. doi:https://doi.org/10.1130/G47023.1
Evolution of geodynamics since the Archean: Significant change at the dawn of the Phanerozoic
Geology February 27, 2020, Vol.48, 488-492. doi:https://doi.org/10.1130/G47417.1
Conjugate strike-slip faulting across a subduction front driven by incipient seamount subduction
Sam R. Davidson; Philip M. Barnes; Jarg R. Pettinga; Andrew Nicol; Joshu J. Mountjoy; Stuart A. Henrys
Geology February 27, 2020, Vol.48, 493-498. doi:https://doi.org/10.1130/G47154.1
The influence of wave power on bedrock sea-cliff erosion in the Hawaiian Islands
Geology March 04, 2020, Vol.48, 499-503. doi:https://doi.org/10.1130/G47113.1
What lies beneath? Reconstructing the primitive magmas fueling voluminous silicic volcanism using olivine-hosted melt inclusions
Simon J. Barker; Michael C. Rowe; Colin J.N. Wilson; John A. Gamble; Shane M. Rooyakkers; Richard J. Wysoczanski; Finnigan Illsley-Kemp; Charles C. Kenworthy
Geology February 27, 2020, Vol.48, 504-508. doi:https://doi.org/10.1130/G47422.1
Constraining sources and relative flow rates of bottom waters in the Late Cretaceous Pacific Ocean
Shannon J. Haynes; Kenneth G. MacLeod; Jean-Baptiste Ladant; Andrew Vande Guchte; Masoud A. Rostami; Christopher J. Poulsen; Ellen E. Martin
Geology February 27, 2020, Vol.48, 509-513. doi:https://doi.org/10.1130/G47197.1
Hematite (U-Th)/He thermochronometry detects asperity flash heating during laboratory earthquakes
Geology March 18, 2020, Vol.48, 514-518. doi:https://doi.org/10.1130/G46965.1
Early sulfide saturation is not detrimental to porphyry Cu-Au formation
Geology February 27, 2020, Vol.48, 519-524. doi:https://doi.org/10.1130/G47169.1
Research Focus
Forum
Constraining the maximum depth of brittle deformation at slow- and ultraslow-spreading ridges using microseismicity: COMMENT
Geology May 01, 2020, Vol.48, e501. doi:https://doi.org/10.1130/G47444C.1
Constraining the maximum depth of brittle deformation at slow- and ultraslow-spreading ridges using microseismicity: REPLY
Geology May 01, 2020, Vol.48, e502. doi:https://doi.org/10.1130/G47542Y.1
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Cover Image
Cover Image
![issue cover]()
COVER: Cambrian Tonto Group exposed near Palisades Canyon in eastern Grand Canyon, USA. Thumbnail image here shows units exposed: PCd—lower Dox Formation of the Mesoproterozoic Unkar Group; Cambrian Tonto Group consists of: Ct—Tapeats Sandstone, Cb—Bright Angel Formation, Cm—Muav Formation, and Cfm—Frenchman Mountain Dolostone (Sixtymile Formation is missing here); DTb—Devonian Temple Butte Formation, Mr—Mississippian Redwall Limestone. Next red cliffs are the Pennsylvanian/Permian Supai Group; the rim of Grand Canyon is the Permian Aubrey Group.
Photo by: Laura J. Crossey
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