Global Boundary Stratotype Section and Point for base of Hettangian

E196701 UNEXPLORED

The Global Boundary Stratotype Section and Point for the base of the Hettangian is the internationally agreed geological reference point that marks the formal beginning of the Jurassic Period and the Mesozoic era’s post-Triassic recovery interval.

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Early Jurassic → stratotypeDefinedBy → Global Boundary Stratotype Section and Point for base of Hettangian ⓘ