A Lower Cretaceous, syn-extensional magmatic source for a linear belt of positive magnetic anomalies: the Pacific Margin Anomaly (PMA), western Palmer Land, Antarctica

• Published in: Earth and Planetary Science Letters
• Main Authors: Vaughan, A.P.M., Wareham, C.D., Johnson, A.C., Kelley, S.P.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Elsevier 1998
• Subjects: Antarctic; The Antarctic; Antarctic Peninsula; Pacific; Palmer Land; Antarc*; Antarctica
• Online Access: http://nora.nerc.ac.uk/id/eprint/505013/; https://doi.org/10.1016/S0012-821X(98)00054-5

Ar–Ar laserprobe dating suggests that in western Palmer Land, plutons associated with a curvilinear belt of positive magnetic anomalies along the Pacific margin of the Antarctic Peninsula, the Pacific Margin Anomaly (PMA), are Early Cretaceous in age. The new ages, combined with published structural...