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The AAPG/Datapages Combined Publications Database
AAPG Special Volumes
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The Moma Rift, the Laptev Sea rift zone, and the mid-oceanic Gakkel Ridge form the Arctic rift system. It took shape about 50 m.y. ago due to opening of the Eurasian Basin with respect to a rotation pole in the southern Moma rift (Northeastern Asia). A thinned crust, anomalous mantle, local seismicity, and linear grabens characterize the present structure of the Laptev sea floor. These features were caused by the invasion of the mid-oceanic Gakkel Ridge onto a shelf area. The southernmost Arctic rift system (i.e. the Moma Rift) developed as a superimposed tension structure within a Northeastern Asia orogenic zone.
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