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The Border of Farming and the Cultural Markers - Nordlige Verdener

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135<br />

Generally we speak <strong>of</strong> six different models<br />

<strong>of</strong> colonization into empty areas, but<br />

here I shall only touch upon three <strong>of</strong><br />

<strong>the</strong>m (Moore 2001: 395-396; Anderson<br />

& Gillan 2000: 43 ff.). <strong>The</strong> first model<br />

<strong>and</strong> much discussed is called Outpost<br />

Model or Leap-frog Model, which describe<br />

a human population colonizing an<br />

empty area without contact to <strong>the</strong> mo<strong>the</strong>r<br />

population. Such expansions are very<br />

vulnerable <strong>and</strong> constitute a demographic<br />

risk to say at least. This model is much<br />

more suited to situations where <strong>the</strong> expansion<br />

goes into already populated areas<br />

i.e. with an existing mass <strong>of</strong> genes,<br />

which could explain <strong>the</strong> rapid Neolithic<br />

expansion in continental Europe where<br />

<strong>the</strong> population <strong>of</strong> <strong>the</strong> Mesolithic or Ertebølle/Ellerbech<br />

Cultures constitute possible<br />

mating or marriage partners for <strong>the</strong><br />

exp<strong>and</strong>ing Funnel Beaker (TRB) population<br />

(Rowley-Conwy ip: 1ff.). <strong>The</strong> TRB<br />

expansion is a large <strong>and</strong> fast push only<br />

coming to a temporary halt just North <strong>of</strong><br />

Bohuslän in Western Sweden or around<br />

<strong>the</strong> Oslo Fjord area as earlier mentioned,<br />

may be because <strong>the</strong> Mesolithic population<br />

density drops drastically fur<strong>the</strong>r<br />

North <strong>and</strong> thus <strong>the</strong> local mass <strong>of</strong> genes<br />

also drops.<br />

<strong>The</strong> String <strong>of</strong> Pearls is a variation <strong>of</strong> <strong>the</strong><br />

Matrix Model (Moore 2001: 395) <strong>and</strong><br />

describes a colonization along coastlines<br />

or river systems securing continuous<br />

communication with neighbouring<br />

Fig. 2: One <strong>of</strong> six demographic models. (Moore 2001, fig. 5).<br />

sister settlements eventually securing<br />

this communication with exchange <strong>of</strong><br />

e.g. raw material for making implements,<br />

as we shall see later with <strong>the</strong><br />

Sarqqaq Culture <strong>of</strong> Western Greenl<strong>and</strong><br />

(Grønnow 2004: 66). <strong>The</strong> last model to<br />

be mentioned is <strong>the</strong> Pulse Model or<br />

Wave Model, fig. 2. It is used for describing<br />

two beachhead <strong>and</strong> outpost<br />

scenarios, where colonists arrive in successive<br />

groups securing a steady gene<br />

flow. <strong>The</strong> successive arrives <strong>of</strong> new<br />

groups could be caused by special attractive<br />

elements in <strong>the</strong> newly colonized<br />

l<strong>and</strong> such as arable l<strong>and</strong> with <strong>the</strong> possibility<br />

<strong>of</strong> a social rise or special luxury<br />

raw material such as walrus teeth, if we<br />

look at Norse Greenl<strong>and</strong>. In <strong>the</strong>se far<br />

out societies it is necessary for some<br />

kind <strong>of</strong> social economic relations, which<br />

<strong>Nordlige</strong> <strong>Verdener</strong><br />

Shetl<strong>and</strong>sprojekt

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