Abstract
The South-East Greenland margin is a type example of a volcanic rifted margin. The margin is characterised by a broad seaward-dipping reflector sequence (SDRS) composed of basalt that onlaps continental (mainly Precambrian) crust to the west and terminates eastward in oceanic crust of early Tertiary age (Figs 1, 2).
Highlights
Background and operationsGeophysical databaseLegs 152 and 163 were planned on the basis of extensive seismic data over the South-East Greenland margin (Fig. 2)
Leg 152 confirmed that the seaward-dipping reflector sequence (SDRS) is a wedge ol' predominantly basallic malerial extruclecl subaerially in accord with lhe
The tindings during Leg 152 imply the presenee of a rapid tran ition from continenlal IO oceanic cruSl bclow the inner part of the SDRS
Summary
Legs 152 and 163 were planned on the basis of extensive seismic data over the South-East Greenland margin (Fig. 2). ADP and DSDP drill sile along lhe volcanic rifled margin of the 'orth Allalllic are ~hown. A number af important observations maele during Leg 152 dli Iling (EG63 Transeet an Fig. I) into the South-East Greenland SDRS signiticanLly affecteellhe delailed planning af Leg 163. These include lhe following: (I) the oecurrenee ol' high ly tilted lo subvenica! Leg 152 confirmed that the SDRS is a wedge ol' predominantly basallic malerial extruclecl subaerially in accord with lhe. Existing DSDP and aDP Siles o aDP Leg 163 Sites l - - - - Proposed aDP Leg 163 Site, not drilled
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