Experimental Evidence for the Selective Dissolution and Overgrowth of Calcareous Nannofossils During Diagenesis

Adelseck, Charles G.; Geehan, Gregory W.; Roth, Peter H.

doi:10.1130/0016-7606(1973)84<2755:eeftsd>2.0.co;2

Cited by 84 publications

(42 citation statements)

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“…nofossil elements. These are similar to the alterations observed in hydrothermal research by Adelseck et al ( 1973). Addition of the relatively small differential pressure produced three other important changes in sediment texture (Figs, 9-10):…”

Section: Resultssupporting

confidence: 68%

“…tion kinetics must be accelerated to generate significant lithification in a short period of time. Adelseck et al (1973) found that significant precipitation of calcite occurs in nannofossil ooze within a month at 30ooc but not at 200°C. The texture of their altered sediment closely resembled chalks recovered by the DSDP, which suggests that calcareous ooze diagenesis at abnormally high temperatures can produce a "normal'' end product.…”

Section: Investigations To Date ---Sample Collection and Proceduresmentioning

confidence: 99%

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Experimental formation of chalk from calcareous ooze. Technical progress report

Seyfried¹,

Johnson²

1981

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Section: Resultssupporting

confidence: 68%

Section: Investigations To Date ---Sample Collection and Proceduresmentioning

confidence: 99%

Experimental formation of chalk from calcareous ooze. Technical progress report

Seyfried¹,

Johnson²

1981

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“…Adelseck et al (1973) have demonstrated in laboratory experiments that calcite overgrowths and dissolution etching occur with greater frequency with increasing burial conditions (i.e., increased temperature and pressure). The dissolution and recrystallization of calcite in a calcareous ooze is such that cement overgrowths on the low magnesium calcite of large coccoliths and discoasters occur at the expense of planktonic foraminifers and small coccoliths, which usually disaggregate with increasing dissolution (e.g., Douglas and Savin, 1971;Schlanger and Douglas, 1974;Roth and Berger, 1975;Berger, 1975;Thierstein, 1980;Thunell, 1982).…”

Section: Carbonate Preservationmentioning

confidence: 99%

Stable Isotope and Trace Element Geochemistry of Carbonate Sediments across the Cretaceous/Tertiary Boundary at Deep Sea Drilling Project Hole 577, Leg 86

Zachos¹,

Arthur²,

Thunell³

et al. 1985

Initial Reports of the Deep Sea Drilling Project

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Detailed analyses of well-preserved carbonate samples from across the Cretaceous/Tertiary boundary in Hole 577 have revealed a significant decline in the δ 13 C values of calcareous nannoplankton from the Maestrichtian to the Danian Age accompanied by a substantial reduction in carbonate accumulation rates. Benthic foraminifers, however, do not exhibit a shift in carbon composition similar to that recorded by the calcareous nannoplankton, but actually increase slightly over the same time interval. These results are similar to the earlier findings at two North Pacific Deep Sea Drilling Project locations, Sites 47.2 and 465, and are considered to represent a dramatic decrease in oceanic phytoplankton production associated with the catastrophic Cretaceous/Tertiary boundary extinctions. In addition, the change in carbon composition of calcareous nannoplankton across the Cretaceous/Tertiary boundary at Hole 577 is accompanied by only minor changes in the oxygen isotope trends of both calcareous nannoplankton and benthic foraminifers, suggesting that temperature variations in the North Pacific from the late Maestrichtian to the early Danian Age were insignificant.

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“…Diagenetic effects cause additional confusion. It has been quite evident for several years that diagenesis influences nannofossil and microfossil communities (Adelseck et al, 1973;Berger, 1968;Mclntyre and Mclntyre, 1971). A fossil of given structure and morphology may, with diagenetic effects, change its characteristics to become a "new diagenetic" species.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Calcareous Dinoflagellates in Cenozoic Sediments of Site 366, Eastern North Atlantic

Fütterer¹

1978

Initial Reports of the Deep Sea Drilling Project

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Paleocene to Pleistocene calcareous dinoflagellates in samples from DSDP Leg 41, Site 366 on the Sierra Leone Rise in the eastern North Atlantic are described using scanning electron microscopy (SEM). Two new species of Thoracosphaera were encountered. One species is rejected representing a diagenetically altered modification. Several species are described and illustrated for the first time by SEM examinations.The stratigraphic distribution of individual species described here shows restricted ranges, although a few long-ranging species are present. More complete investigation of regionally widespread material may result in using calcareous dinoflagellates as valuable index fossils.

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Experimental Evidence for the Selective Dissolution and Overgrowth of Calcareous Nannofossils During Diagenesis

Cited by 84 publications

References 0 publications

Experimental formation of chalk from calcareous ooze. Technical progress report

Experimental formation of chalk from calcareous ooze. Technical progress report

Stable Isotope and Trace Element Geochemistry of Carbonate Sediments across the Cretaceous/Tertiary Boundary at Deep Sea Drilling Project Hole 577, Leg 86

Distribution of Calcareous Dinoflagellates in Cenozoic Sediments of Site 366, Eastern North Atlantic

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