Giant paleo-seafloor craters and mass wasting associated with magma-induced uplift of the upper crust.

ABSTRACT: Giant seafloor craters are known along many a continental margin with recurrent mass-wasting deposits. However, the impact of breakup-related magmatism on the evolution of such craters is barely understood. Using high-quality geophysical datasets, this work examines the genetic relationship among the location of magmatic sills, forced folds and the formation of giant paleo-seafloor craters underneath an ancient mass-transport complex in the Møre and Vøring basins, offshore Norway. The data reveal that forced folding of near-seafloor strata occurred because of the intrusion of several interconnected magmatic sills. Estimates of 1-dimensional uplift based on well data show that uplift occurred due to the intrusion of magma in Upper Cretaceous to Lower Eocene strata. Our findings also prove t

SUBMITTER: Omosanya KO 

PROVIDER: S-EPMC8924249 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature