GENERAL RESULTS

STONE AGE CRATHES

Uncovering one of the largest Mesolithic Sites in the UK

COLOUR Buchan flint can occur in a variety of colours: yellows, reds and browns predominate at Skelmuir Hill, whereas medium - pale grey flint is dominant at Boddam Den, although this distinction is not sufficient for allocation of a source. The main colours on the Crathes site are brown, yellow, red, orange, grey. However, there was every combination in between! James said to use the Mundol charts, but I soon gave up on this as there were variations in colour in most pieces, and some had different colours e.g brown with a black layer under the cortex. Some very general observations: Whitish tended to be coarser grained and often opaque Orange/brownish orange tended to be finer grained Paler grey flints tended to be more coarse grained, whereas the dark grey/black tended to be finer grained, some very dark/black was very fine grained, yet in thinner areas almost transparent. Yellow: much of the initially yellow flint became much browner over time whereas some, of a richer deeper yellow retained its colour. Red, grey and whitish flint retained its colour Suspect brown/yellowish brownmay become more orange-y over time? In the end, I decided to use T Ballin’s (2014) basic colour classification of brown-yellow-orange, red, grey, with the addtion of black and whitish for this report. Even so, this assessment has to be subjective, rather than objective: eg: deciding whether a flint is brownish grey (ie Grey) or greyish brown (ie Brown) is not always easy. Flints designated as ‘whitish’ tended to be more whitish than pale grey. As heat/burning can change the colour of the flint, only unburnt pieces were asessed.
THE SCATTER Although the scatter (see chart) is continuous there are two major intensive areas, each with possibly associated sub-sites: Nether Mills West: NM 1 extending into NM 2, Nether Mills East: extending well into NM 4 and NM 3; includes the JBK dig site Milton Cottage: less intensive and could well extend into the football pitch area, bordered by the Coy Burn, at the West. It may be a sub-site relating to NMW. Consequently I refer in this report to Nethermills East (NME), Nethermills West (NMW), and Milton Cottage (MC) as being simple and logical, rather than the confusing and misleading array of names in Canmore and SMR. (Nether Mills West: previously Durris Bridge (Canmore) and Crathes Mains (Abdnshire SMR) both referring to the same collection. Although the bridge is officially the Durris Bridge, this collection is from Crathes, not Durris, is at the north edge of the field not near the bridge, and is from Nether Mills Farm not Crathes Mains.) The bulk of the Nether Mills flints were found along the middle river terrace except for those in NM 1 on an ‘island’ of higher ground on the lower terrace. This is close to the SW edge of the middle terrace and seems to extend into the E edge of MC. The material from MC was mostly on the higher areas along the river bank (ie the lower terrace). In general the river braiding is reflected by the scatter concentrations, as they were mostly on the higher ground in all five fields (see Google map below). James Kenworthy’s excavation was situated near the SW corner of NM 4, an extremely small part of NME let alone the whole of the Crathes scatter. The concentration at the major site, NMW, is more intense than that at NME. It must be remembered, however, that approximately 30,000 flints were removed from NME during James’ excavation.
LITHICS The material With the exception of two agate pieces and one anomalous piece, the assemblage was of flint. This siliceous stone was attractive to prehistoric people because it can be worked in a predictable and repeatable way to produce sharp edges and/or to manufacture implements. It is a very hard material, and as it is almost indestructable, the presence of worked flint may be the only remaining indication of prehistoric activity. Flint pebbles do not occur in the River Dee (JBK, Interim Report) and James referred to the flint found at Crathes as Buchan flint. Although there are flint mines in Buchan at Skelmuir Hill and Den of Boddam, associated with the Neolithic, it is thought that Mesolithic people (8000-4000BC) made use of beach pebbles along the coast, and surface pebbles in Buchan (D R Bridgeland 2000)
Five years of fieldwalking revealed a continuous scatter of flints through the five fields: 1.75 km along the river bank and 250m to the north in the widest part, one of the largest Mesolithic sites in the UK (Caroline Wickham-Jones 2016, page 50)
Table GR 1: Crathes: Presence/absence of types at each site
Type
MC
NMW
NME
Cores
yes
yes
yes
Meso broad blade microliths (larger)
yes
yes
yes
Meso broad blade microlliths (smaller)
yes
yes
no
Meso narrow blade microliths
yes
yes
yes
Meso microburins
no
yes
yes
Early Neo leaf-shaped arrowheads
no
yes
yes
Neo flaked knives
no
yes
yes
Neo ground and polished knife
no
yes
no
Scrapers
yes
yes
yes
Blades
yes
yes
yes
Flakes
yes
yes
yes
Split pebbles
yes
yes
yes
Possible Neo potsherd
no
yes
yes
For more details and definitions of types, see Lithic Analysis
Table GR 2: Colour percentages from all unburnt flints at each site
Attribute \ Site
MC
NMW
NME
Total flints
711
4,543
4,638
Unburnt flints
509
3,331
3,747
% Brown
41.3
73.4
75.3
% Grey
39.3
14.2
12.6
% Red
6.9
7.4
8.7
% Whitish
10.7
4.5
3.1
% Black
1.8
0.5
0.3
% Pink
0.2
included with red
included with red
Table GR 3: Milton Cottage: Colour percentages from 2008 + 2011
Attribute \ Year
2008
2011
2008 + 2011
Total flints
206
505
711
Unburnt flints
169
340
509
% Brown
30.0
47.1
41.3
% Grey
51.8
33.3
39.3
% Red
7.1
6.8
6.9
% Whitish
10.7
10.6
10.7
% Black
0.6
2.4
1.8
% Pink
0.6
0.0
0.2
Table GR 4:Nethermills West, NM 2: Colour percentages from 2010 and 2011
Attribute \ Year
2010
2011
2010 + 2011
Total flints
294
478
772
Unburnt
230
346
576
% Brown
86.9
76.0
80.4
% Grey
6.1
9.0
7.8
% Red
4.3
10.7
8.2
% Whitish
2.6
3.5
3.1
% Black
0
0
0
% Pink
0
0.9
0.5
MC
NETHERMILLS WEST
NM 1
NM 2
NM 3
NM 4
NETHERMILLS EAST
MILTON COTTAGE
Milton Cottage (MC) MC CR 2011 Nethermills West (NME) NM 1,1A CR 2008 NM 2 CR 2011 Nethermills East (NMW) NM 3,4 CR 2009
The scatterplot, showing the find-point grid references of lithics collected during the years 2008, 2009 and 2011. Field NM 1A is at the north of NM 1.
Even during fieldwalking it was apparent that there was a higher proportion of grey flint at MC and later analysis confirmed this (Table GR 3). However, although the percentage of grey flint was substantially higher than that of brown flint in 2008, in 2011 the brown flint percentage was just slightly higher than that of the grey (Table GR 3). The other colours, as with NMW and NME, were in smaller numbers (Table GR 3).
The overall percentages of brown and grey flint at Nethermills West and Nethermills East were very similar, with the brown flint comprise much the largest group, and the grey a poor second. Other flint colours were less in evidence. Milton Cottage, however, had almost equal proportions of grey flint, (but see Table GR 3 below). The remaining flint colours were in low numbers.
Burnt or not Pieces showing crazing, cracking were recorded as burnt, whereas those with red tinges were recorded as slightly burnt. Several ‘pot-lids’ were picked up. Burnt flint was found throughout the area, concentrations possibly reflecting the intensities of the scatters. Numbers may be an underestimate as it is possible that flint can be heated with no noticeable change in colour. Heating can make the flint easier to work, but I am not aware of any evidence of this procedure here or elsewhere on Deeside. (This section is in preparation.)
For an overall site comparison the combined flint totals from each site were used to compile the percentages. Table GR 2 comprises the flints from: Milton Cottage: 2008+2011, Nethermills West: NM 1 2008+2012 + NM 2: 2010+2011, Nethermills East: 2009
Colour percentages at each site
Comparison of percentages in different years
In 2008, Milton Cottage was ploughed late, and had no weathering before being drilled a few days later. Some pieces seemed to be ‘surface stained’ by the surrounding silty/sandy substrate colour, and some even seemed to have a very thin layer of substrate strongly adhering to the surface (James said they looked as if they needed a good scrub!). I’ve wondered since if these flints had just been unearthed for the first time, and they hadn’t been exposed long enough to be ‘cleaned’ by weathering? The percentage of grey flints was lower in 2011. Maybe any staining/adhering substrate on brown flints resulted in them not being so easily discernable in 2008, but not all flints were affected. Nevertheless, this is a large difference between the two years!
Milton Cottage
(Still to be completed)
Reference D R Bridgeland (2000) Flint-rich gravels in Aberdeenshire, in The Quaternary of the Banffshire Coast & Buchan, Field Guide, edited by J W Merrit, E R Connell & D R Bridgeland. Quaternary Research Association, page 98.
The assemblage During the process of tool-making, many waste pieces are produced. Where large scale flint-knapping has taken place, the resulting debitage can form the bulk of a collection, and this was certainly the case in Crathes. Although much of the material is broken/damaged, all phases of manufacture are present, from the preparation of the raw material to the production of finished tools. Cores, mostly single platform, and a variety of scrapers form part of the collection. The major component is of Mesolithic technology. Finds diagnostic of the Mesolithic include microliths and microburins, with the ‘broad blade’ (possibly earlier) technology represented by large wide-based triangles and oblique points, and the ‘narrow-blade’ (possibly later) technology by crescents and backed bladelets. Three smaller wide-based triangles may be from an intermediate stage. The other component of this site is Neolithic. Our most spectacular find was a very fine Middle to Late Neolithic ground and polished knife. Other Neolithic finds include two small flaked knives, four Early Neolithic leaf- shaped arrowheads (1 almost whole, 3 broken) and 2 small possible Early Neolithic potsherds (Table GR 1).
Show Scatterplot Show Concentration
The black circles represent the grid references at edge of the field. The Google map shows NM 2, the Field Label button indicates the positon of the terraces, the Scatterplot button shows the ditribution of the flints, and the Concentration button gives the number of flints in each 10m x 10m square, and the Most squares at the edges of the field extend beyond the boundaries. The scatter is almost totally confined to the middle terrace, with a few at the base of the bank and a few, mostly at the east edge extending part of the way down the eroding edge of the middle terrace.
Show Field Labels © Copyright 2019 Heather M Sabnis