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

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

Department of Earth and Environmental sciences

Research output: Contribution to conference › Abstract

Abstract

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 language	English
State	Published - 2007
Event	10th International Symposium on Antractic Earth Sciences - University of California, Santa Barbara, United States Duration: 26 Aug 2007 → 31 Aug 2007

Conference

Conference	10th International Symposium on Antractic Earth Sciences
Country/Territory	United States
City	Santa Barbara
Period	26/08/07 → 31/08/07

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@conference{63b2c733f9c2492c980c77237bca9e3c,

title = "PS-53 Young faults in the Adare Basin and northern Ross Sea",

abstract = "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.",

author = "Joann Stock and Franziska Dammeier and Roi Granot and RW Clayton and Steve Cande and Fred Davey and Takemi Ishihara",

year = "2007",

language = "English",

note = "10th International Symposium on Antractic Earth Sciences ; Conference date: 26-08-2007 Through 31-08-2007",

}

TY - CONF

T1 - PS-53 Young faults in the Adare Basin and northern Ross Sea

AU - Stock, Joann

AU - Dammeier, Franziska

AU - Granot, Roi

AU - Clayton, RW

AU - Cande, Steve

AU - Davey, Fred

AU - Ishihara, Takemi

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

M3 - Abstract

T2 - 10th International Symposium on Antractic Earth Sciences

Y2 - 26 August 2007 through 31 August 2007

ER -

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

Abstract

Conference

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