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Michael Heap

Associate Editor, JGR: Solid Earth

Photograph of a volcano erupting.
Posted inEditors' Vox

Dynamics of Volcanic Processes

by Olivier Roche, Yosuke Aoki, Nikolai Bagdassarov, Michael Heap, Sigrun Hreinsdottir, Qinghua Huang, Daniel Pastor-Galán, Michael Poland, Maria Sachpazi, Fang-Zhen Teng, Gregory P. Waite, Marie Edmonds, Paul Asimow, Minghua Zhang and Graziella Caprarelli 6 July 202220 September 2022

A new cross-journal special collection invites contributions on modern approaches used to investigate dynamics of volcanic processes.

Two microstructural schematic diagrams showing how clay influences the void space connectivity and permeability of unfaulted sandstone and faulted sandstone.
Posted inEditors' Highlights

Clay Type, Not Just Content, Crucial for Fault Zone Permeability

by Michael Heap 14 February 202219 October 2022

Faults containing clays are often considered as barriers to fluid flow but new work shows that fault processes leading to the formation of clays can increase permeability relative to the host rock.

Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

Drought Drove the Amazon’s 2023 Switch to a Carbon Source

25 February 202625 February 2026
Editors' Highlights

Tectonic Modifications Shape Surface Environment and Landscape

2 March 202626 February 2026
Editors' Vox

A Double-Edged Sword: The Global Oxychlorine Cycle on Mars

10 February 202610 February 2026
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