How to Access …

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Your Online Journal Subscription(s)

Access to the Table of Contents and Abstracts is freely available. Members can use their GSA username and password to access their subscriptions (including their free Geology subscription) at To log in, click on the “GSA Member Sign In” link in the blue bar near the top of the screen. Members can also sign in by clicking on the “sign-in” box in the top right of the screen, then scrolling down to the “GSA Member Log In” link under the GSA logo.

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Your Bloc-of-Docs Subscription

New Bloc of Doc subscriptions will no longer be available. If you have previously purchased a Bloc of Docs subscription and you wish to gain access to an article or chapter, please contact us at