14C age anomalies in modern land snails shell carbonate from Southern Italy

2008 ◽  
Vol 3 (1-2) ◽  
pp. 68-75 ◽  
Author(s):  
Lea Romaniello ◽  
Gianluca Quarta ◽  
Giuseppe Mastronuzzi ◽  
Marisa D’Elia ◽  
Lucio Calcagnile
Keyword(s):  
Southern Italy ◽  
Land Snails ◽  
14C Age ◽  
Shell Carbonate

scholarly journals Radiocarbon Age Anomalies in Pre- and Post-Bomb Land Snails from the Coastal Mediterranean Basin

Radiocarbon ◽  
2007 ◽  
Vol 49 (2) ◽  
pp. 817-826 ◽  
Author(s):  
G Quarta ◽  
L Romaniello ◽  
M D'Elia ◽  
G Mastronuzzi ◽  
L Calcagnile
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotopes ◽  
Accelerator Mass Spectrometry ◽  
Mediterranean Basin ◽  
Southern Italy ◽  
Land Snails ◽  
Carbon Stable Isotopes ◽  
Radiocarbon Age ◽  
Theba Pisana ◽  
Shell Carbonate

The shell carbonate of pre- and post-bomb samples of 2 species of terrestrial gastropods (Theba pisana and Cernuella virgata) sampled along the coast of Apulia, southern Italy, were dated using accelerator mass spectrometry and carbon stable isotopes were analyzed. The analyses show, for both species, significant anomalies in the radiocarbon age due to the possible presence of a 14C-depleted source of carbon in the formation of the shell aragonite. The magnitude of the age anomaly was quantified in the studied area to ∼1000 14C yr.

scholarly journals Carbon Isotope Analysis of Land Snail Shells: Implications for Carbon Sources and Radiocarbon Dating

Radiocarbon ◽  
1983 ◽  
Vol 25 (3) ◽  
pp. 810-830 ◽  
Author(s):  
Glenn A Goodfriend ◽  
Darden G Hood
Keyword(s):  
Exchange Rate ◽  
Organic Carbon ◽  
Radiocarbon Dating ◽  
Activity Patterns ◽  
Isotope Analysis ◽  
Carbon Sources ◽  
Isotopic Fractionation ◽  
Land Snail ◽  
Land Snails ◽  
Shell Carbonate

13C and 14C analyses were performed on a series of modern Jamaican land snails in order to quantitatively determine the sources of shell carbon. A model of these carbon sources, the pathways by which carbon reaches the shell, and the fractionation processes involved are presented. The contribution of limestone to shell carbonate is variable but may comprise up to 33% of the shell. About 25–40% of shell carbonate is derived from plants and about 30–60% from atmospheric CO2. Variation among populations and species with respect to 13C and 14C is attributed to the effects of limestone incorporation, snail size (as it affects CO2 exchange rate), physiological characteristics (presence of urease, respiration rate), and activity patterns of the snails. A formula for correction for isotopic fractionation of 14C of shell carbonate, based on 13C measurements, is derived. Bicarbonate-aragonite fractionation is apparently very minimal. Shell organic carbon appears to be derived largely from plants but also to a lesser extent from inorganic hemolymph carbon. This introduces the possibility of a small age anomaly of shell organic 14C due to limestone incorporation.

14C Age Offset in the Mar Piccolo Sea Basin in Taranto (Southern Italy) Estimated on Cerastoderma Glaucum (Poiret, 1789)

Radiocarbon ◽  
2019 ◽  
Vol 61 (5) ◽  
pp. 1387-1401 ◽  
Author(s):  
Gianluca Quarta ◽  
Paola Fago ◽  
Lucio Calcagnile ◽  
Giulia Cipriano ◽  
Marisa D’Elia ◽  
...  
Keyword(s):  
Sea Level ◽  
Southern Italy ◽  
Morphological Evolution ◽  
Sediment Cores ◽  
Sea Level Changes ◽  
Last Interglacial ◽  
Cerastoderma Glaucum ◽  
14C Age ◽  
Two Samples ◽  
Stratigraphic Succession

ABSTRACTThe stratigraphic succession of the Mar Piccolo basin (Gulf of Taranto, Southern Italy) is well known in the scientific literature dealing with the last interglacial since its morphological evolution is influenced by sea level changes during Late Pleistocene-Holocene. The local Holocene sea level history is well known thanks to data deriving from peat and ash layers identified in different sediment cores obtained underwater and in coastal areas. Peat sediments are frequently interlayed with muddy-sand beds rich in Cerastoderma glaucum (Poiret, 1789). In the literature of the Mediterranean basin, AMS 14C dating on C. glaucum is widely used also in paleo-environmental reconstruction because this bivalve is considered an useful marker of sea level, though in lagoonal systems, large age offsets have been reported in different areas. Due to the availability of precise chronological and geochronological markers, in order to validate the use of C. glaucum in paleo sea level reconstruction, AMS 14C dating campaign was carried out on this bivalve deriving from several cores drilled in the Mar Piccolo basin and its nearby areas. Nineteen AMS 14C dating analyses carried out on C. glaucum sampled from different sediment cores up to a maximum of 30 m from the seafloor are presented. These results show an inconsistency of the ages in relation to a sea-level rise reconstruction model. The interpretation of the data was performed after the estimation of the local age offset calculated by analyzing six live samples, collected in 2017 in Mar Piccolo and in Croatia, and two samples dated to 1968–1969. The results show that for both the classes of samples (2017 and 1960s) an age offset ranging from 600 to 800 yr can be estimated.

scholarly journals Radiocarbon Age Anomalies in Shell Carbonate of Land Snails from Semi-Arid Areas

Radiocarbon ◽  
1987 ◽  
Vol 29 (2) ◽  
pp. 159-167 ◽  
Author(s):  
Glenn A Goodfriend
Keyword(s):  
Coastal Dune ◽  
Land Snails ◽  
Arid Areas ◽  
The West ◽  
Radiocarbon Dates ◽  
Radiocarbon Age ◽  
Climatic Regions ◽  
Shell Carbonate ◽  
Semi Arid ◽  
Ecological Differences

Radiocarbon age anomalies, resulting from ingestion of old carbonate, were measured in shell carbonate of live-collected snails from arid and semi-arid areas of Israel and the West Bank. The age anomalies were found to be similar to those in land snails from other climatic regions and averaged ca 1600 yr in Trochoidea seetzeni, 2200 yr in Sphincterochila spp, 800 yr in Levantina sp, and 1700 yr in coastal dune species. The differences are associated with ecological differences among taxa. The uncertainties of the age anomalies average several hundred years within each group. This renders radiocarbon dates of late Holecene snails relatively imprecise, whereas it has almost no effect on the age uncertainties of relatively old samples (ie, those with large errors of measurement). Procedures for correction for fractionation are discussed.

scholarly journals The land malacofauna from Vesuvius National Park and neighbouring areas (Naples, Southern Italy): Preliminary results

2019 ◽  
Vol 2 ◽  
Author(s):  
Agnese Petraccioli ◽  
Nicola Maio ◽  
Paolo Crovato ◽  
Ivano Niero ◽  
Paola Conti ◽  
...  
Keyword(s):  
National Park ◽  
Southern Italy ◽  
Personal Data ◽  
Taxonomic Status ◽  
Land Snails ◽  
Field Surveys ◽  
Italian Regions ◽  
Allochthonous Species ◽  
First Time ◽  
Land Molluscs

The faunistic data on the recent land molluscs of Vesuvius National Park (Naples, Southern Italy) and neighbouring areas sampled during field surveys from 2005 to 2006 are reported here. The data were obtained through a careful research on museum collections and literature and were supplemented with observations from field surveys. Up to now, only 23 land snails species were known from the Vesuvius National Park through bibliographical data. The faunistic research, carried out in 25 stations of different environment typologies, allowed us to discriminate 31 species: 15 of these species are reported here for the first time for the study area. The presence of 16 species was confirmed by other field investigations. Other 19 taxa are reported in the literature, but not confirmed in our research - Helix turriculatella O. G. Costa, 1839 (obsolete nomenclature), Trochoidea trochoides Poiret, 1789, Hygromia cinctella (Draparnaud, 1801), Campylaea planospira (Lamarck, 1822), Vitrea sp. (cf. contracta (Westerlund, 1871)), Cecilioides acicula (O. F. Müller, 1774), Cochlicella acuta (O. F. Müller, 1774), Theba pisana O. F. Müller, 1774). Another 12 taxa are highly doubtful, because of possibilities for confusion with species living in other European or Italian regions, as well as previous misidentifications (Deroceras agreste (Linnaeus, 1758), Monacha gregaria (Rossmässler, 1839), Cochlicella barbara (Linnaeus, 1758), Monachoides incarnatus (O. F. Müller, 1774),Cernuella (Cernuella) cisalpina (Rossmässler, 1837), Cernuella aradasii (Pirajno, 1842), Oxychilus cellarius (O. F. Müller, 1774), O. alliarius (J. S. Miller, 1822), Zonitoides nitidus (O.F. Müller, 1774), Hyalina pseudohydatina, Ferussacia lubrica, Aegopinella nitens (Michaud, 1831); it was impossible in these cases to refer to their current specific name. Eobania vermiculata (O. F. Müller, 1774), Rumina decollata (Linnaeus, 1758), Papillifera papillaris (O. F. Müller, 1774) appear to be the most common species. Interesting are the records of Marmorana muralis (O.F. Müller, 1774), Helix cf. ligata (O.F. Müller, 1774) and Charpentiera gibbula gibbula (Rossmässler, 1836). Charpentieria gibbula honii (Tiberi, 1878) needs genetic investigations in order to confirm its taxonomic status. One allochthonous species (Paralaoma servilis (Shuttleworth, 1852)) was surveyed for the first time in the study area. A Red List of Threatened Species is proposed and the species are classified according to the IUCN criteria (Version 2019-2.1). The malacofauna of Vesuvius - Somma Mountain Complex is composed by 38 land mollusc species and represents 36.2% of the total species present in Campania (about 105 species, personal data) and 12.8% of the Italian fauna (about 530 species of land molluscs extrapolated from the list of Bank (2017). It is assumed that the poor biodiversity of the Vesuvian land malacofauna can be attributed essentially to the scarcity of calcareous substrates and the absence of permanent water sources.

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