Foraminifers from the Upper Jurassic and Lower Cretaceous of the Eastern Atlantic (DSDP Leg 41, Sites 367 and 370)

Abstract

At Sites 367 and 370 (for locations see Figure 1) the oldest recovered sediments above the cored basalt are Upper Jurassic and Lower Cretaceous. For study of the foraminifers, 144 samples (62 from the Upper Jurassic, 25 from the Lower Cretaceous of Site 367, the rest from the Lower Cretaceous of Site 370), were taken and partly washed by V. Krasheninnikov and U. Pflaumann during the cruise. These authors worked on samples corresponding to ours (see sample intervals in Tables 1, 2, and 4); we thus had a valuable opportunity for cooperation and comparison of results. They reached conclusions similar to ours about the general distribution, the age, and the depth of the sediments, and agreed with most of the determinations of species. Our results are marked K (Kuznetsova) or S (Seibold). Seibold gave special consideration to the Jurassic material; Kuznetsova studied the Lower Cretaceous material, in addition to her Jurassic samples.