Abstract
Abstract A late Cretaceous to middle Oligocene sedimentary sequence, here named the Campbell Island Group, is exposed on Campbell Island in the core of a Miocene volcanic dome overlying metamorphic basement rocks of the Complex Point Group. The latter comprises low-grade schist which has undergone metamorphism of low to intermediate pressure type, and is very restricted in outcrop. The Campbell Island Group includes the late Cretaceous and Paleocene Garden Cove Formation, and the Eocene and Oligocene Tucker Cove Limestone. A marine transgression is recorded in the Garden Cove Formation which includes non-marine sediments at the base and nearshore facies overlain by deep marine mudstone at the top. The Tucker Cove Limestone is a pelagic limestone which was anomalously lithified during diagenesis, apparently by high local heat flow associated with Miocene volcanism. Regional aspects of the geology of the Campbell Plateau are discussed.
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