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Marcello Mannino

From oysters to cockles at Hjarnø: chronology and economy on a Mesolithic kitchenmidden site

Research output: Contribution to conferenceConference abstract for conferenceResearch

Standard

From oysters to cockles at Hjarnø: chronology and economy on a Mesolithic kitchenmidden site. / Philippsen, Bente; Larsen, Johan Sandvang; Skriver, Claus; Astrup, Peter Moe; Borup, Per; Olsen, Jesper; Mannino, Marcello.

2017. Abstract from Radiocarbon and Diet, Aarhus, Denmark.

Research output: Contribution to conferenceConference abstract for conferenceResearch

Harvard

APA

CBE

Philippsen B, Larsen JS, Skriver C, Astrup PM, Borup P, Olsen J, Mannino M. 2017. From oysters to cockles at Hjarnø: chronology and economy on a Mesolithic kitchenmidden site. Abstract from Radiocarbon and Diet, Aarhus, Denmark.

MLA

Philippsen, Bente et al. From oysters to cockles at Hjarnø: chronology and economy on a Mesolithic kitchenmidden site. Radiocarbon and Diet, 20 Jun 2017, Aarhus, Denmark, Conference abstract for conference, 2017.

Vancouver

Philippsen B, Larsen JS, Skriver C, Astrup PM, Borup P, Olsen J et al. From oysters to cockles at Hjarnø: chronology and economy on a Mesolithic kitchenmidden site. 2017. Abstract from Radiocarbon and Diet, Aarhus, Denmark.

Author

Bibtex

@conference{77c86d013dc54bab90c5aaa708e6c71f,
title = "From oysters to cockles at Hjarn{\o}: chronology and economy on a Mesolithic kitchenmidden site",
abstract = "At Hjarn{\o}, an island in Horsens fjord (Denmark), a submerged Mesolithic settlement has been known since at least 1936. In 2010 and 2011, a refuse layer of the former settlement was excavated. Despite the threat of erosion, organic preservation was generally good. For example, fragments of paddles with remains of painted decorations were found. In 2015, a shell layer at the site, facing imminent destruction by waves, was sampled. In total, 8 large boxes of shells were collected, one from each of the 1m² squares.A sample of ca. 18.000 shells NISP (ca. 3000 MNI) from the eight squares was identified to species. Of these, a subsample of 780 cockles and 115 oysters were measured. Preliminary results show that oysters became on average larger and cockles smaller moving up the sequence, as the species dominating the assemblages shifted from oysters to cockles. Overall, several lines of evidence, including the taphonomy of the shells, suggest that the shell accumulation is anthropogenic.Radiocarbon dates of associated shell and charcoal samples were used to calculate the local reservoir effect and to establish the chronology of the shell midden. Interestingly, our results indicate that the change in dominant species, from oysters to cockles, happened at about 5300 cal BC. The orthodoxy is that this shift in mollusc species occurred at 4000 cal BC and a hypothesis for the introduction of the Neolithic economy was partly driven by {\textquoteleft}the oyster decline{\textquoteright}. We will also present δ¹³C and δ¹⁸O measurements on CO₂ subsamples from the shells, which will enable us to study the marine environment in more detail.",
author = "Bente Philippsen and Larsen, {Johan Sandvang} and Claus Skriver and Astrup, {Peter Moe} and Per Borup and Jesper Olsen and Marcello Mannino",
year = "2017",
language = "English",
note = "Radiocarbon and Diet ; Conference date: 20-06-2017 Through 23-06-2017",
url = "http://conferences.au.dk/radiocarbonanddiet2017/",

}

RIS

TY - ABST

T1 - From oysters to cockles at Hjarnø: chronology and economy on a Mesolithic kitchenmidden site

AU - Philippsen, Bente

AU - Larsen, Johan Sandvang

AU - Skriver, Claus

AU - Astrup, Peter Moe

AU - Borup, Per

AU - Olsen, Jesper

AU - Mannino, Marcello

PY - 2017

Y1 - 2017

N2 - At Hjarnø, an island in Horsens fjord (Denmark), a submerged Mesolithic settlement has been known since at least 1936. In 2010 and 2011, a refuse layer of the former settlement was excavated. Despite the threat of erosion, organic preservation was generally good. For example, fragments of paddles with remains of painted decorations were found. In 2015, a shell layer at the site, facing imminent destruction by waves, was sampled. In total, 8 large boxes of shells were collected, one from each of the 1m² squares.A sample of ca. 18.000 shells NISP (ca. 3000 MNI) from the eight squares was identified to species. Of these, a subsample of 780 cockles and 115 oysters were measured. Preliminary results show that oysters became on average larger and cockles smaller moving up the sequence, as the species dominating the assemblages shifted from oysters to cockles. Overall, several lines of evidence, including the taphonomy of the shells, suggest that the shell accumulation is anthropogenic.Radiocarbon dates of associated shell and charcoal samples were used to calculate the local reservoir effect and to establish the chronology of the shell midden. Interestingly, our results indicate that the change in dominant species, from oysters to cockles, happened at about 5300 cal BC. The orthodoxy is that this shift in mollusc species occurred at 4000 cal BC and a hypothesis for the introduction of the Neolithic economy was partly driven by ‘the oyster decline’. We will also present δ¹³C and δ¹⁸O measurements on CO₂ subsamples from the shells, which will enable us to study the marine environment in more detail.

AB - At Hjarnø, an island in Horsens fjord (Denmark), a submerged Mesolithic settlement has been known since at least 1936. In 2010 and 2011, a refuse layer of the former settlement was excavated. Despite the threat of erosion, organic preservation was generally good. For example, fragments of paddles with remains of painted decorations were found. In 2015, a shell layer at the site, facing imminent destruction by waves, was sampled. In total, 8 large boxes of shells were collected, one from each of the 1m² squares.A sample of ca. 18.000 shells NISP (ca. 3000 MNI) from the eight squares was identified to species. Of these, a subsample of 780 cockles and 115 oysters were measured. Preliminary results show that oysters became on average larger and cockles smaller moving up the sequence, as the species dominating the assemblages shifted from oysters to cockles. Overall, several lines of evidence, including the taphonomy of the shells, suggest that the shell accumulation is anthropogenic.Radiocarbon dates of associated shell and charcoal samples were used to calculate the local reservoir effect and to establish the chronology of the shell midden. Interestingly, our results indicate that the change in dominant species, from oysters to cockles, happened at about 5300 cal BC. The orthodoxy is that this shift in mollusc species occurred at 4000 cal BC and a hypothesis for the introduction of the Neolithic economy was partly driven by ‘the oyster decline’. We will also present δ¹³C and δ¹⁸O measurements on CO₂ subsamples from the shells, which will enable us to study the marine environment in more detail.

M3 - Conference abstract for conference

T2 - Radiocarbon and Diet

Y2 - 20 June 2017 through 23 June 2017

ER -