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Black and white photo of Marie Tharp adding detail to a large map of the sea floor , which is probably 6ft x 3ft. She is wearing a dark sweater over a white, collared blouse, and holding a pen in her right hand.

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https://files.mastodon.social/media_attachments/files/110/804/509/027/745/420/original/ef822516849a23db.jpeg

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  1. Robert McNees (mcnees@mastodon.social)'s status on Sunday, 30-Jul-2023 18:43:57 UTC Robert McNees Robert McNees

    Geologist Marie Tharp was born #OTD in 1920.

    She built the first accurate map of the Atlantic Ocean floor, discovering the Mid-Atlantic Ridge that provided evidence for seafloor spreading and plate tectonics.

    Image: Lamont-Doherty Earth Observatory

    In conversation about a year ago from mastodon.social permalink
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