Die Fortschritte der Radiokarbon-Methode 1952—1956

Gross, Hugo

doi:10.3285/eg.08.1.08

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…The record from "Cueva del Toll" is thus found to be in very good agreement with the outlines of the Würm glaciation, as they heve now emerged elsewhere (EMILIANI 1956, GROSS 1957a, 1957, and literature there cited). The glaciation is dichotomous, with a shorter and perhaps less intense Early Würm and a long Main Würm, separated by a very well-defined interstadial.…”

Section: Discussionsupporting

confidence: 70%

“…A second interpretation which might be suggested would be to correlate the steppe horizon h with the Eem, and the forest peak of i with the late Riss, but this appears rather improbable for several reasons. The Gött weig is well known to have been a relatively long episode with a marked climatic amelio ration very much farther to the north, and it is almost inconceivable that it would have had no effect on the sequence from g to d. The fauna seems also to agree better with this interpretation than with any other; the cave bear mass occurrence is in layer h, and it is known in other regions to be very common in the Göttweig (GROSS 1957 b).…”

Section: Discussionmentioning

confidence: 91%

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The floral and faunal succession of „Cueva del Toll", Spain

Donner¹,

Kurtén²

1958

E&G Quaternary Sci. J.

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Section: Discussionsupporting

confidence: 70%

Section: Discussionmentioning

confidence: 91%

The floral and faunal succession of „Cueva del Toll", Spain

Donner¹,

Kurtén²

1958

E&G Quaternary Sci. J.

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“…The impact of hard water is not limited to bulk measurements, but also affects CSRA. Mischke and co-workers (2017) determined the hard water effect by dating algae 14 C. Modern algae had an F 14 C of 0.8914, thus a correction of the hard-water effect was necessary, which can cause an age shift of approximately 2000 years in submerged aquatic plants (Gross 1957). The impact of hard water on the radiocarbon dating of bulk sediment is possible, as the heterogeneous bulk sample may contain a proportion of algae.…”

Section: Resultsmentioning

confidence: 99%

ASSESSING ¹⁴C BLANKS IN THE SMALL-SCALE ANALYSIS OF N-ALKANE COMPOUND-SPECIFIC-RADIOCARBON-ANALYSIS

Reetz,

Friedrich,

Birk

et al. 2024

Radiocarbon

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Compound-specific radiocarbon analysis (CSRA) provides the possibility to date sample material at a molecular level. N-alkanes are considered as specific compounds with high potential to CSRA. As these compounds originate from plant waxes, their radiocarbon (14C) analysis can provide valuable information about the age and origin of organic materials. This helps to reconstruct and understand environmental conditions and changes in vegetation in the past. However, CSRA has two main challenges: The small sample size of CSRA samples, making them extremely sensitive to blank effects, and the input of unknown amounts of extraneous carbon during the analytical procedure. According to the previous study from Sun and co-workers, we used different-sized aliquots of leaves Fagus sylvatica (nC27, nC29) and Festuca rubra agg (nC31, nC33) as modern standards and two commercial standards (nC26, nC28) as fossil standards for blank determination. A third commercial standard (nC27) with predetermined radiocarbon content of F14C = 0.71 (14C age of 2700 BP) serves to evaluate the blank correction. We found that the blank assessment of Sun and co-workers is also applicable to n-alkanes, with a minimum sample size of 15 µg C for dependable CSRA dates. We determined that the blank introduced during the analytical procedure has a mass of (4.1 ± 0.7) µg carrying a radiocarbon content of F14C = 0.25 ± 0.05. Applying the blank correction to a sediment sample from Lake Holzmaar (Germany) shows that all four isolated n-alkanes have similar 14C ages. However, the bulk material of the sediment and branches found in the sediment core are younger than the CSRA dates. We conclude that the disparity between the actual age of analysed organic material and the age inferred from radiocarbon results, which can occur in sediment traps due to delayed deposition, is the reason for the CSRA age.

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“…Summary inGross, 1957; dates fromGodwin, 1957, Troels-Smith, 1953 (for last Littorina > Passage Grave), 1956,Levi-Tauber, 1955, Tauber, 1956, Munnich, 1957, Groschopf, 1957 A new, and at the time of writing this, unpublished Copenhagen date of 2,500+200, seems much more reasonable. (Oral communication from H.…”

mentioning

confidence: 90%

Regional Groups in the Michelsberg Culture: A Study in the Middle Neolithic of West Central Europe

Scollar

1959

Proc. Prehist. Soc.

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In order to discuss the origin of the Michelsberg culture, a question which has been the subject of much debate during the last five years, a closer definition of the culture is first necessary. This paper begins by reviewing the theories as to origins which have been offered during the last half century, a detailed description of the elements making up the various subdivisions of the culture is then attempted, together with some observations on the internal chronology of the material; and in conclusion a return is made to the question of origin.We owe to Schumacher the first identification of the culture by name, though it was Reinecke's contribution two years later which proposed its attachment to a ‘western’ neolithic family in an article written, as usual, with an insight years ahead of its time. Schumacher had thought that the culture was a late phase of Bandkeramik (Danubian I) influenced by Schnurkeramik (Corded Ware).Later, Reinecke modified his views somewhat and noted the close connection between the material of the Swiss lake dwelling cultures and the mesolithic of Scandinavia and, in two short papers, laid the basis for the second of the principal theories as to origins. It is interesting that the same man was responsible for two major trends in archaeological thought on the question.

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Die Fortschritte der Radiokarbon-Methode 1952—1956

Cited by 5 publications

References 11 publications

The floral and faunal succession of „Cueva del Toll", Spain

The floral and faunal succession of „Cueva del Toll", Spain

ASSESSING ¹⁴C BLANKS IN THE SMALL-SCALE ANALYSIS OF N-ALKANE COMPOUND-SPECIFIC-RADIOCARBON-ANALYSIS

Regional Groups in the Michelsberg Culture: A Study in the Middle Neolithic of West Central Europe

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Die Fortschritte der Radiokarbon-Methode 1952—1956

Cited by 5 publications

References 11 publications

The floral and faunal succession of „Cueva del Toll&quot;, Spain

The floral and faunal succession of „Cueva del Toll&quot;, Spain

ASSESSING 14C BLANKS IN THE SMALL-SCALE ANALYSIS OF N-ALKANE COMPOUND-SPECIFIC-RADIOCARBON-ANALYSIS

Regional Groups in the Michelsberg Culture: A Study in the Middle Neolithic of West Central Europe

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The floral and faunal succession of „Cueva del Toll", Spain

The floral and faunal succession of „Cueva del Toll", Spain

ASSESSING ¹⁴C BLANKS IN THE SMALL-SCALE ANALYSIS OF N-ALKANE COMPOUND-SPECIFIC-RADIOCARBON-ANALYSIS