Výsledky vyhledávání - "Graham D.M. Andrews"

Making sense of brittle deformation in rhyolitic lavas: Insights from Obsidian Dome, California, USA

Autor: Shelby L. Isom, Graham D.M. Andrews, Stuart Kenderes, Alan G. Whittington

Publikováno v: Geosphere. 19:431-448

The scarcity of observed active extrusive rhyolitic lava flows has skewed research to extensively focus on prehistoric lavas for information about their eruptive and emplacement dynamics. The first ever witnessed silicic lava eruptive events, Chaité

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fae47ebc0b06f003473eae88394f8e1a
https://doi.org/10.1130/ges02499.1

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Geology of a Large Intact Extensional Oceanic Arc Crustal Section with Superior Exposures: Cretaceous Alisitos Arc, Baja California (Mexico)

Autor: Cathy J. Busby, Rebecca A. Morris, Susan M. DeBari, Sarah Medynski, Keith Putirka, Graham D.M. Andrews, Axel K. Schmitt, Sarah R. Brown

Publikováno v: Geology of a Large Intact Extensional Oceanic Arc Crustal Section with Superior Exposures: Cretaceous Alisitos Arc, Baja California (Mexico) ISBN: 9780813725604

The Rosario segment of the Early Cretaceous Alisitos oceanic arc exposes the transition from upper-crustal volcanic and hypabyssal rocks to middle-crustal plutons, which formed in an extensional environment. The Rosario segment forms a structurally i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::996d460a79a4ce5fd5ebd0931eb4be25
https://doi.org/10.1130/2023.2560(01)

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Petrogenesis of voluminous silicic magmas in the Sierra Madre Occidental large igneous province, Mexican Cordillera: Insights from zircon and Hf-O isotopes

Autor: Graham D.M. Andrews, Cathy J. Busby, Sarah R. Brown, Christopher M. Fisher, Pablo Davila-Harris, Ariel Strickland, Jeffrey D. Vervoort, Holly D. Pettus, Fred W. McDowell, Bryan P. Murray

Publikováno v: Geosphere. 18:946-984

Combined Hf-O isotopic analyses of zircons from tuffs and lavas within the Sierra Madre Occidental (SMO) silicic large igneous province are probes of petrogenetic processes in the lower and upper crust. Existing petrogenetic and tectonomagmatic model

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2b70e4f2d5aba197948c20bf3191a91
https://doi.org/10.1130/ges02430.1

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Volcanic record of the arc-to-rift transition onshore of the Guaymas basin in the Santa Rosalía area, Gulf of California, Baja California

Autor: Jonathan Rice, Matthew Henry, Claire Andrews, Emilie Bowman, Evelyn P. Gutierrez, Sarah R. Brown, Alison Graettinger, Cathy J. Busby, Sarah Medynski, Emma Lodes, Judith Ojeda, Margarita López Martínez, Graham D.M. Andrews, Tina M. Niemi

Publikováno v: Geosphere. 16:1012-1041

The Gulf of California is an archetype of continental rupture through transtensional rifting, and exploitation of a thermally weakened arc to produce a rift. Volcanic rocks of central Baja California record the transition from calcalkaline arc magmat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f78d4f8a9a8b63d01c52aaf8cc4066f
https://doi.org/10.1130/ges02094.1

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The transition from planar to en echelon morphology in a single vein in shale: Insights from X-ray computed tomography scanning

Autor: Graham D.M. Andrews, Dustin Crandall, Johnathan Moore, Paige Mackey, Sarah R. Brown

Publikováno v: Geosphere. 16:646-659

En echelon fractures and veins are among the most common and distinctive geological structures, yet their three-dimensional forms and relationships to surrounding structures are commonly unclear. X-ray computed tomography (CT) offers an unrivaled abi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59a5a2e1365875a988cdd993ef102be7
https://doi.org/10.1130/ges02191.1

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