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1

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A Comparative Study of Molecular Paleosalinity Indicators: Chromans, Tocopherols and C20 Isoprenoid Thiophenes in Miocene Lake Sediments (Nördlinger Ries, Southern Germany) (1997)

Barakat, Assem O. ; Rullkötter, Jürgen

Springer

Aquatic geochemistry 3 (1997), S. 169-190

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ISSN: 1573-1421

Keywords: Chromans ; homohopenes ; isoprenoid thiolanes ; isoprenoid thiophenes ; methylated MTTC ; Nördlinger Ries ; tocopherols

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Geosciences

Notes: Abstract Distributions of alkylated chromans and C20 isoprenoid thiophenes were investigated in four organic-matter- and sulfur-rich black shales of Miocene age deposited in the ancient crater lake of the Nördlinger Ries (southern Germany), a meteorite impact crater. Paleosalinity parameters based on these compound classes generally confirm sedimentological evidence of increased salinity over certain periods of the lake's history, but the data from both groups of compounds are not consistent. Diagenetically related molecular constituents were therefore studied to estimate the sensitivity of these parameters. The influence of thiolanes on the isoprenoid thiophene parameter was found to be low, whereas too little is known at present about the origin and diagenetic fate of alkylated chromans to conclude definitely that an alkylated chroman paleosalinity parameter can reliably be applied to a wide range of depositional settings.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1009645510876

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2

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Gas chromatographic/mass spectrometric analysis of cembrenoid diterpenes in kerogen from a lacustrine sedimentDedicated to Professor Herbert Budzikiewicz on the occasion of his 60th birthday. (1993)

Barakat, Assem O. ; Rullkötter, Jürgen

Chichester : Wiley-Blackwell

Biological Mass Spectrometry 28 (1993), S. 157-162

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ISSN: 0030-493X

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Alkaline hydrolysis of kerogen from a Miocene lacustrine sediment (Nördlinger Ries, southern Germany) afforded a series of cembrenoid diterpenes characterized by a 14-membered ring system together with a second, probably related, series of yet unidentified structure. This is the first report of the occurrence of these compounds in fossil organic matter. The interpretation of cembrenoids as molecular markers of arid or semiarid climate is consistent with other information about the depositional environment of the former Nördlinger Ries crater lake.

Additional Material: 6 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/oms.1210280306

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3

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Negative ions in organic mass spectrometry. IIFor part I, See Ref. 1. - Negative ion mass spectra of simple thio and dithio esters. (1976)

Rullkötter, Jürgen ; Budzikiewicz, Herbert

Chichester : Wiley-Blackwell

Biological Mass Spectrometry 11 (1976), S. 44-52

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ISSN: 0030-493X

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The 70 eV negative ion mass spectra of some simple aromatic and aliphatic thio and dithio esters are discussed. A characteristic fragmentation process, a rearrangement analogous to the nitro-nitrite conversion of aromatic nitro compounds, is observed for aromatic thio esters.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/oms.1210110107

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(Table 2) Biomarker data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the interglacial stage MIS 1 (2006)

Rommerskirchen, Florian ; Eglinton, Geoffrey ; Dupont, Lydie M ; [et al.]

PANGAEA

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Publication Date: 2024-04-23

Keywords: 175-1075A; 175-1079A; 175-1082A; 175-1084A; Accumulation rate, calcium carbonate; Accumulation rate, n-Alkanes; Accumulation rate, n-alkanol; Accumulation rate, total organic carbon; Age model; Angola Basin; Benguela Current, South Atlantic Ocean; Calculated, see reference(s); Carbon Preference Index, n-Alkanes (C27-C33); Carbon Preference Index, n-Alkanols; Center for Marine Environmental Sciences; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elevation of event; Event label; GeoB1008-3; GeoB1016-3; GeoB1028-5; GeoB1710-3; GeoB1722-1; Gravity corer (Kiel type); Higher Plant Alkanes index; Joides Resolution; Latitude of event; Leg175; Longitude of event; M20/2; M6/6; MARUM; Meteor (1986); n-Alkane, average chain length; n-Alkanol average chain length; Namibia continental slope; Ocean Drilling Program; ODP; Sea surface temperature, annual mean; see reference(s); SL; Walvis Ridge, Southeast Atlantic Ocean

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Format: text/tab-separated-values, 99 data points

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(Table 2) Biomarker data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the glacial stage MIS 6a (2006)

Rommerskirchen, Florian ; Eglinton, Geoffrey ; Dupont, Lydie M ; [et al.]

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Publication Date: 2024-04-23

Keywords: 175-1075A; 175-1079A; 175-1082A; 175-1084A; Accumulation rate, calcium carbonate; Accumulation rate, n-Alkanes; Accumulation rate, n-alkanol; Accumulation rate, total organic carbon; Age model; Angola Basin; Benguela Current, South Atlantic Ocean; Calculated, see reference(s); Carbon Preference Index, n-Alkanes (C27-C33); Carbon Preference Index, n-Alkanols; Center for Marine Environmental Sciences; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elevation of event; Event label; GeoB1008-3; GeoB1016-3; GeoB1028-5; GeoB1710-3; GeoB1722-1; Gravity corer (Kiel type); Higher Plant Alkanes index; Joides Resolution; Latitude of event; Leg175; Longitude of event; M20/2; M6/6; MARUM; Meteor (1986); n-Alkane, average chain length; n-Alkanol average chain length; Namibia continental slope; Ocean Drilling Program; ODP; Sea surface temperature, annual mean; see reference(s); SL; Walvis Ridge, Southeast Atlantic Ocean

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Format: text/tab-separated-values, 99 data points

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(Table 2) Biomarker data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the interglacial stage MIS 5e (2006)

Rommerskirchen, Florian ; Eglinton, Geoffrey ; Dupont, Lydie M ; [et al.]

PANGAEA

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Publication Date: 2024-04-23

Keywords: 175-1075A; 175-1079A; 175-1082A; 175-1084A; Accumulation rate, calcium carbonate; Accumulation rate, n-Alkanes; Accumulation rate, n-alkanol; Accumulation rate, total organic carbon; Age model; Angola Basin; Benguela Current, South Atlantic Ocean; Calculated, see reference(s); Carbon Preference Index, n-Alkanes (C27-C33); Carbon Preference Index, n-Alkanols; Center for Marine Environmental Sciences; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elevation of event; Event label; GeoB1008-3; GeoB1016-3; GeoB1028-5; GeoB1710-3; GeoB1722-1; Gravity corer (Kiel type); Higher Plant Alkanes index; Joides Resolution; Latitude of event; Leg175; Longitude of event; M20/2; M6/6; MARUM; Meteor (1986); n-Alkane, average chain length; n-Alkanol average chain length; Namibia continental slope; Ocean Drilling Program; ODP; Sea surface temperature, annual mean; see reference(s); SL; Walvis Ridge, Southeast Atlantic Ocean

Type: Dataset

Format: text/tab-separated-values, 99 data points

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(Table 2) Biomarker data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the glacial stage MIS 2 (2006)

Rommerskirchen, Florian ; Eglinton, Geoffrey ; Dupont, Lydie M ; [et al.]

PANGAEA

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Publication Date: 2024-04-23

Keywords: 175-1075A; 175-1079A; 175-1082A; 175-1084A; Accumulation rate, calcium carbonate; Accumulation rate, n-Alkanes; Accumulation rate, n-alkanol; Accumulation rate, total organic carbon; Age model; Angola Basin; Benguela Current, South Atlantic Ocean; Calculated, see reference(s); Carbon Preference Index, n-Alkanes (C27-C33); Carbon Preference Index, n-Alkanols; Center for Marine Environmental Sciences; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elevation of event; Event label; GeoB1008-3; GeoB1016-3; GeoB1028-5; GeoB1710-3; GeoB1722-1; Gravity corer (Kiel type); Higher Plant Alkanes index; Joides Resolution; Latitude of event; Leg175; Longitude of event; M20/2; M6/6; MARUM; Meteor (1986); n-Alkane, average chain length; n-Alkanol average chain length; Namibia continental slope; Ocean Drilling Program; ODP; Sea surface temperature, annual mean; see reference(s); SL; Walvis Ridge, Southeast Atlantic Ocean

Type: Dataset

Format: text/tab-separated-values, 99 data points

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