PS-53 Young faults in the Adare Basin and northern Ross Sea

Joann Stock, Franziska Dammeier, Roi Granot, RW Clayton, Steve Cande, Fred Davey, Takemi Ishihara

Research output: Contribution to conferenceAbstract


The Adare basin, northern Ross Sea, formed by seafloor spreading between East and West Antarctica along a NNW-trending ridge from 43 - 26 Ma. On seismic cruise NBP0701, young faults were identified by (1) offset seismic stratigraphic layers on MCS and chirp profiles and (2) seafloor morphological features visible in multibeam bathymetry. Two classes of young or active normal faults were recognized. Faults linked at depth with buried volcanic bodies may be related to differential compaction or adjustment of sediments. Young faults in non-volcanic regions are regionally more correlative, with NNW to NNE strikes. The NNE faults are oblique to the NNW trend of the northern and central Adare Trough, postdate the seafloor spreading, and are found in a broad area within and surrounding the southern Adare Trough. Evidence for growth faulting in the seismic sections indicates a prolonged period of activity.
Original languageEnglish
StatePublished - 2007
Event10th International Symposium on Antractic Earth Sciences - University of California, Santa Barbara, United States
Duration: 26 Aug 200731 Aug 2007


Conference10th International Symposium on Antractic Earth Sciences
Country/TerritoryUnited States
CitySanta Barbara


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