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Magnetic anomalies northeast of Cape Adare, northern Victoria Land (Antarctica), and their relation to onshore structures

January 1, 2007

An aeromagnetic survey was flown over the offshore region northeast of Cape Adare and the magnetic
anomalies compared to onshore structures between Pennell Coast and Tucker Glacier. The magnetic anomalies show
two nearly orthogonal major trends. NNW-SSE trending anomalies northeast of Cape Adare represent seafloor
spreading within the Adare Trough. A connection of these anomalies to the Northern Basin of the Ross Sea is not clear.
Onshore faults are closely aligned to offshore anomalies. Main trends are NW-SE to NNW-SSE and NE-SW to NNESSW. NNW-SSE oriented dextral-transtensional to extensional faults parallel the Adare Peninsula and Adare Trough
anomalies. NE-SW trending normal faults appear to segment the main Hallett volcanic bodies.

Publication Year 2007
Title Magnetic anomalies northeast of Cape Adare, northern Victoria Land (Antarctica), and their relation to onshore structures
DOI 10.3133/ofr20071047SRP016
Authors D. Damaske, A.L. Läufer, F. Goldmann, H.-D. Möller, F. Lisker
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2007-1047-SRP-016
Index ID ofr20071047SRP016
Record Source USGS Publications Warehouse