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Ever wondered where your city was located during the Cretaceous era, a time when North America and Europe were still united, and Australia remained attached to Antarctica? Scotese, C.R., 2016. PALEOMAP Project/PaleoAtlas for GPlates and the PaleoData Plotter Program.For those fascinated by Earth's natural history, the idea of plate tectonics is likely familiar. This concept explains that the planet's lithosphere consists of rigid plates constantly shifting and colliding, driven by the flow of semi-molten rock in the mantle below. As a result, Earth's landmasses are in perpetual motion, meaning that millions of years ago, your current location could have been in a completely different part of the world.
Take New York City, for instance. During the Early Triassic epoch, 240 million years ago, the city was situated in the heart of Pangea, a vast supercontinent that encompassed nearly all of Earth's land. Rewind further to 500 million years ago, during the Late Cambrian period, and you'd find the bustling metropolis submerged underwater, amidst a surge in aquatic biodiversity. Even earlier, 750 million years ago, it was part of another supercontinent, Rodinia, which was gradually fragmenting.
Discover the ancient whereabouts of any location on Earth using the innovative Ancient Earth simulation. This tool enables you to input a city's name, highlight it, and choose a historical date from a dropdown menu to visualize its position millions of years ago.
The Ancient Earth tool was developed by Ian Webster, a software engineer and the founder and CTO of Zenysis, a San Francisco-based firm specializing in data analytics and visualizations to enhance healthcare delivery in developing nations. Webster has a rich background, having worked at Google, NASA, and other space industry companies. He is also the mind behind Dinosaurpictures.org, a platform offering a vast collection of dinosaur images and even a feature to view a random dinosaur.
Beyond his passion for paleogeography, Webster is deeply interested in transforming data into compelling visual narratives.
"Visualizations make complex scientific concepts more accessible," Webster shared via email. "They bridge the gap between abstract data and tangible understanding, benefiting both the general public and scientists. Since the rise of WebGL in 2012, I've been exploring unique opportunities for scientific visualization. My past projects include illustrating how meteor showers form and depicting the structure of the universe."
Webster's Ancient Earth visualization relies on the research of paleogeographer Christopher Scotese and his PALEOMAP Project, which maps the evolution of continents and ocean basins over 1.1 billion years. Paleogeographers employ diverse techniques, such as analyzing ancient magnetic fields preserved in iron-rich rocks, to reconstruct the Earth's ancient landscapes.
"Dr. Scotese's research is accessible online in a format compatible with GPlates, a desktop application geologists use for visualizing plate tectonics," Webster notes. "I discovered his work while researching the most reliable sources for paleogeographic maps. Creating the visualization required writing content, figuring out how to geocode addresses, and reversing plate tectonic transformations. After developing it, I contacted Chris, who has been incredibly supportive, offering suggestions and enhancements for the project."
"The toughest part was undoubtedly learning how to geocode addresses and reverse-engineer plate tectonic transformations," he explains. "It was a fascinating challenge that deepened my understanding of the scientific principles behind plate tectonics."
While the web-based visualization is an engaging tool, Webster also has a serious educational goal. "I hope Ancient Earth helps people grasp the vastness of Earth's history on a cosmic scale. These geological processes have been shaping our planet for unimaginable lengths of time. I also aim to foster an appreciation for the science that enables us to uncover Earth's past."
Webster is intrigued by the idea of developing another visualization to predict the future movement of tectonic plates and continents. "I’d love to tackle this," he says. "I just need the right data!"
