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Great Oxygenation Event

A vector image for a two-page spread depicting the Great Oxygenation Event -- the period in the Earth's development where photosynthetic cyanobacteria began to fill the atmosphere with oxygen. Text and layout by Dave Jarvis.

Created for Impacts, a climate change awareness book aimed at educating the public about the Earth's natural history.

Pre-orders for physical copies of the book are available now. A PDF copy of the book will be available for free once the book is finalized.


Visit the Impacts website at to learn more!

Clients: Dave Jarvis

Audience: Public

Format: Print (photobook), 12 x 24"

Media: Adobe Illustrator

Date: October 2019


Process Work


A rough concept put together by the client.


A rough sketch drawn in photoshop using colour swatches provided by the client.


The final image, drawn in Illustrator with vector brushes, and flattened into a smaller file.

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