ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

Electronic Resource

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

add to mindlist on the mindlist

Details

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

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Unknown

(Table 6) Pollen 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

add to mindlist on the mindlist

Details

Publication Date: 2024-02-02

Keywords: 175-1075A; 175-1079A; 175-1082A; 175-1084A; Accumulation rate, fern spores; Accumulation rate, pollen; Age model; Angola Basin; Benguela Current, South Atlantic Ocean; C3 plants, pollen; Calculated, see reference(s); Cape reeds, pollen; Center for Marine Environmental Sciences; Compositae, pollen; Compositae Tubuliflorae; Cyperaceae; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elevation of event; Event label; GeoB1008-3; GeoB1016-3; GeoB1028-5; GeoB1710-3; GeoB1722-1; Grass, pollen; Gravity corer (Kiel type); Joides Resolution; Latitude of event; Leg175; Longitude of event; M20/2; M6/6; MARUM; Meteor (1986); Namibia continental slope; Ocean Drilling Program; ODP; Periporates; see reference(s); SL; Tribulus, pollen; Walvis Ridge, Southeast Atlantic Ocean

Type: Dataset

Format: text/tab-separated-values, 91 data points

Permalink