Table 4 Sample details and results from the seven modern plants (lithological descriptions taken from the Geological Survey of Northern Ireland, see Fig. 2).

From: Feasting and Mobility in Iron Age Ireland: Multi-isotope analysis reveals the vast catchment of Navan Fort, Ulster

Sample

Description

Location

Lithology

87Sr/86Sr

δ34S

NAVP1

Blackthorn

Navan Fort (SW)

Carboniferous: Interbedded limestone, argillaceous rocks and subordinate sandstone

0.708642

7.9

NAVP2

Horse chestnut

Navan Fort (C)

Carboniferous: Interbedded limestone, argillaceous rocks and subordinate sandstone

0.708540

7.5

NAVP3

Thorny bush

Navan Fort (N)

Carboniferous: Interbedded limestone, argillaceous rocks and subordinate sandstone

0.709564

8.7

NAVP4

Unknown tree

Navan Fort (SE)

Carboniferous: Interbedded limestone, argillaceous rocks and subordinate sandstone

0.708612

7.9

NAVP5

Beech

Palace Demesne

Carboniferous: Interbedded limestone, argillaceous rocks and subordinate sandstone

0.709363

7.6 (leaf), 6.4 (stem)

NAVP6

Hawthorn

King’s Stables

Carboniferous: Interbedded limestone, argillaceous rocks and subordinate sandstone

0.708427

6.5

NAVP7

Thorny bush

Observatory grounds

Carboniferous: Sandstone, siltstone and mudstone

0.708669

0.2