Showing papers by "Malcolm B. Hart published in 1988"
TL;DR: The effects of the Cenomanian-Turonian Oceanic Anoxic Event (OAE) in the Chalk Sea of NW Europe have been investigated using published macrofossil records combined with new detailed sedimentological, foraminiferal, ostracod, calcareous nannofossil, dinoflagellate cyst and stable-isotope data from Dover, England as mentioned in this paper.
386 citations
56 citations
01 Jan 1988
5 citations
TL;DR: In this paper, a new approach for X-raying planktonic foraminifera is proposed which replaces previous complicated techniques, which provides a rapid, efficient and cost-effective method of recording many specimens for biometric analysis.
Abstract: X-raying planktonic foraminifera provides a rapid, efficient and cost-effective method of recording many specimens for biometric analysis. A new approach is here proposed which replaces previous complicated techniques.
4 citations
01 Jan 1988
TL;DR: The Deep Sea Drilling Project (DSDP) Leg 80 is located at lat. 48°54'N long and long lat. 13°30'W (Fig. 1), on Goban Spur, and was drilled to a depth of 3,887m.
Abstract: Site 551, Deep Sea Drilling Project (DSDP) Leg 80 is located at lat. 48°54’.64”N long. 13°30’.09”W (Fig. 1), on Goban Spur, and was drilled to a depth of 3,887m. It penetrated a post-Aptian Mesozoic and Tertiary postrift drape over the en-echelon listric faulted basement of the eastern Atlantic passive margin (Graciansky et al. 1985). The oldest sediments recovered were 2.3m of late Cenomanian nannofossil chalk which rest unconformably on basaltic basement (Fig. 2). These are overlain by 4.1m of black, organic-rich, finely laminated shale (Graciansky et al. 1985), which are thought to be the local representation of the late Cenomanian Oceanic Anoxic Event (OAE) of Schlanger and Jenkyns (1976) (see Schlanger et al. 1987, for a recent review). The complete section has been used to assess the major microfaunal changes across the OAE (Hart 1985; Hart and Ball 1986; Leary 1987) but this study is only concerned with a comparison of the pre-OAE Foraminiferida. The presence of Rotalipora cushmani (Morrow) and Rotalipora greenhornensis (Morrow) in all samples (Fig. 2) (Graciansky et al. 1985) indicate the upper part of the R. cushmani T.R.Z. of Robazynski and Caron (1979).
2 citations