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• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Northeast Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.488.3808; http://www-odp.tamu.edu/publications/152_SR/VOLUME/CHAP_38.PDF

sered from four drill holes along the EG63-transect (Figs. 1, 2). These four holes penetrated the upper part of the seaward-dipping reflector sequences (SDRS) imaged on seismic reflection data. The entire vol-canic succession at Site 917 was drilled, and a 779-m-thick sequence of subaerially emplaced lava flows was found. Evidence of excessive volcanism during the continental breakup is found on passive rifted margins worldwide, primarily based on the interpretation of SDRS on seismic reflection data (Coffin and Eld-holm, 1994; Eldholm et al., 1995). Voluminous volcanic sequences have been mapped along the northeast Atlantic margins on seismic reflection data over the past two decades (Fig. 1), where up to 6-km-thick SDRS are found along the conjugate margins (e.g., Hinz et al., 1987; White et al., 1987; Larsen, 1990). Drilling of the landward parts (feather-edges) of the SDRS has confirmed that they consist of subaerially emplaced flood basalts (Roberts, Schnikter, et al., 1984;