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Altered basalt block with brecciated texture over-printed by alteration.

Altered basalt block with brecciated texture over-printed by alteration. Photo overlay Annotations overlay Labels overlay Insets overlay

Interpreted SEM-BSE image of altered basalt block showing brecciated texture over-printed by alteration. Fragments of altered basalt show pinch-and-swell & intermingling textures. Insets show relict crystalline texture within internal clast core whereas outside clasts the greenstone is almost entirely altered to clay.


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I’m Alex Clarke

I am a structural geologist working as a Postdoctoral Researcher at Johannes Gutenberg–Universität Mainz and a hobbyist girl-with-camera.

My research focuses on the heterogeneities within large faults, shear zones, and subduction zone mélanges — how to map them, quantify them, and explain their origins. I am especially interested in 3D reconstructions of rocks and outcrops which allow detailed, realistic, and quantifiable models of natural phenomena. I also love to teach and I am interested in innovative and engaging methods of teaching earth sciences, both in the classroom and in the field.

In my free time, I enjoy photography and my images reflects my love of nature and the diverse forms nature can take.