by drilling at the Vøring Plateau (Deep Sea Drilling Project [DSDP]
Rockall Plateau (DSDP Leg 81), and more recently from the south-east Greenland Margin (ODP Leg 152) (Fig. 1). These studies have confirmed that the North Atlantic SDRS are composed predominant-ly of subaerially erupted lava flows and tuffs. Precise crystallization ages of the North Atlantic SDRS are...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.7706 http://www-odp.tamu.edu/publications/152_SR/VOLUME/CHAP_32.PDF |
| Summary: | Rockall Plateau (DSDP Leg 81), and more recently from the south-east Greenland Margin (ODP Leg 152) (Fig. 1). These studies have confirmed that the North Atlantic SDRS are composed predominant-ly of subaerially erupted lava flows and tuffs. Precise crystallization ages of the North Atlantic SDRS are essen-tial to understanding the interplay of magmatism and continental rift-ing, as well as the history of formation of oceanic lithosphere in the early opening of the North Atlantic. Until now, age control on the SDRS has been determined primarily by interpretation of seafloor magnetic anomaly sequences and fossil ages from sediments overly-ing or between lava flows. Magnetic anomaly data (Talwani and Eld-holm, 1977) indicate that the Vøring Plateau SDRS are at least Anomaly 24R age (53.3−55.9 Ma, Berggren et al., 1995), consistent with the early Eocene age of the sediments overlying the lavas (Tal- |
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