Relative effect of taphonomy on calcification temperature estimates from fossil planktonic Foraminifera

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doi: 10.1016/j.geobios.2007.02.007
Author(s): Williams, Mark; Haywood, Alan M.; Vautravers, Maryline; Sellwood, Bruce W.; Hillenbrand, Claus-Dieter; Wilkinson, Ian P.; Miller, C. Giles
Author Affiliation(s): Primary:
University of Leicester, Department of Geology, Leicester, United Kingdom
British Antarctic Survey, United Kingdom
University of Reading, United Kingdom
British Geological Survey, United Kingdom
Natural History Museum, United Kingdom
Volume Title: Geobios
Source: Geobios, 40(6), p.861-874. Publisher: Elsevier on behalf of Université Claude Bernard, Département des Sciences de la Terre, Lyon, France. ISSN: 0016-6995 CODEN: GEBSAJ
Note: In English with French summary. 49 refs.; illus., incl. 2 tables, sketch maps
Summary: This paper explores the effects of preservation and taphonomy on the ultrastructure of recent and fossil (Quaternary and Neogene) Globigerinoides using scanning electron microscopy and thin section petrography. We show preservation states from: pristine (plankton tow) specimens that are "glassy", have a microcrystalline test structure, and bear sharply defined interpore ridges with delicate spines; through core top and fossil specimens that have gametogenic calcite veneers of euhedral or lumpy deposits covering the interpore ridges and spine bases; to fossil material with extensive dissolution of the test wall and diagenetic calcite formed during shallow burial (less than 300m below the sea floor). The latter produce a "grainy" texture to the test. Although we cannot unravel the precise effects of ecology and taphonomy on calcification temperature at every site, we show that for well-preserved fossil material with gametogenic calcite, temperature estimates are typically 2-3°C cooler than modern sea surface, and are similar to those recorded using the δ18O of core top material from tropical latitudes. In contrast, at tropical sites with poor fossil preservation, estimates of calcification temperature are significantly cooler, sometimes by more than 10°C than expected from present observations. Abstract Copyright (2007) Elsevier, B.V.
Year of Publication: 2007
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Atlantic Ocean; Cenozoic; DSDP Site 157; DSDP Site 158; DSDP Site 214; DSDP Site 216; DSDP Site 237; DSDP Site 238; DSDP Site 281; DSDP Site 284; DSDP Site 289; DSDP Site 310; DSDP Site 335; DSDP Site 366; DSDP Site 408; DSDP Site 410; DSDP Site 470; DSDP Site 502; DSDP Site 503; DSDP Site 519; DSDP Site 552; DSDP Site 590; DSDP Site 610; DSDP Site 98; Deep Sea Drilling Project; Diagenesis; Foraminifera; Globigerinacea; Globigerinidae; Globigerinoides; Globigerinoides sacculifer; IPOD; Indian Ocean; Invertebrata; Leg 105; Leg 11; Leg 114; Leg 115; Leg 121; Leg 133; Leg 154; Leg 159; Leg 16; Leg 22; Leg 24; Leg 29; Leg 30; Leg 32; Leg 37; Leg 41; Leg 49; Leg 63; Leg 68; Leg 73; Leg 81; Leg 90; Leg 94; Living taxa; Microfossils; Microstructure; Neogene; ODP Site 646; ODP Site 704; ODP Site 709; ODP Site 758; ODP Site 811; ODP Site 817; ODP Site 925; ODP Site 926; ODP Site 959; Ocean Drilling Program; Pacific Ocean; Paleotemperature; Preservation; Protista; Quaternary; Rotaliina; SEM data; Taphonomy; Tertiary
Coordinates: S200000 N090000 E1030000 E0860000
N234000 N385000 W0690000 W0772000
N034308 N092719 W0425429 W0442852
Record ID: 2008089311
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands