Sedimentary Cover and Bouguer Anomalies in the Northern Part of the Knipovich Ridge

摘要

The sea floor Knipovich ridge is the northern termination of the Mid-Atlantic Ridge (MAR). It stretches in the submeridional direction from 73°30' to 78°0' northern latitude (see inset in Fig. 1) and is located between the Mohns Ridge in the south and the Molloy fault in the north. It has been suggested that the current location of the ridge is determined by migration of the spreading axis. Accretion of this spreading segment of the MAR started in the Late Eocene-Early Oligocene (34 million years ago) [1], while rifting at the present location of the ridge may have started in the Quaternary period [2].