(Corse) during the last 6000 yr - OT-Med

(Corse) during the last 6000 yr - OT-Med

introduction
Reconstructing Palaeoenvironmental Evolution in
the Aléria Plain (Corse) during the last 6000 yr
Andrés Currás, Matthieu Ghilardi, Matteo Vacchi, Philippe Dussouillez, Claude Vella
introduction
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Projet Collective de Recherche (PCR-CORSE): Géoarchéologies des vallés
de Corse (2013-2015) directed by Matthieu Ghilardi.
Reconstruction of palaeoenvironmental
dynamics and human-nature interactions
in littoral areas of Corsica.
introduction
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Projet Collective de Recherche (PCR-CORSE): Géoarchéologies des vallés
de Corse (2013-2015) directed by Matthieu Ghilardi.
1 Km
- The Aléria Plain as an strategic area for the development of complex
societies through the last 6000 yr
introduction
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
- Development of complex human societies since the Neolithic (5th mil. BC).
- Terrinien Culture for the Calcolithic period (3rd mil. BC) and Bronze Age.
Archeological site of Terrina IV.
CALCOLITHIC NEOLITHIC 6000 BC 5000 BC 4000 BC 3000 BC BRONZE AGE 2000 BC IRON ROMAN MEDIEVAL ITALIAN CONT. 1000 BC 1000 AD 2000 AD introduction
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Roman Aleria
- Greek and Etrurian Alalia (ca 9th BC).
- Roman Aleria Colonia (80 BC), capital of Corsica.
CALCOLITHIC NEOLITHIC 6000 BC 5000 BC 4000 BC 3000 BC BRONZE AGE 2000 BC IRON ROMAN MEDIEVAL ITALIAN CONT. 1000 BC 1000 AD 2000 AD introduction
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Roman Aleria
- Population decay in High Medieval.
- Late Medieval, Genoan and French occupation until present.
- Continuous occupation. Tracking changes.
CALCOLITHIC NEOLITHIC 6000 BC 5000 BC 4000 BC 3000 BC BRONZE AGE 2000 BC IRON ROMAN MEDIEVAL ITALIAN CONT. 1000 BC 1000 AD 2000 AD site description
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Sedimentary sampling
Étang del Sale
-3 km2 surface.
-2 km away from Terrina site
-Partially-dried littoral swamp (Salicornia, Juncus, Juniperus, Pinus, Cistus,
Lamiaceae, Quercus)
site description
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Sedimentary sampling
- 1984 pollen analysis of Étang del Sale by Maurice Reille.
Excellent palynological study.
Only two 14C dates (5920 BP and 5650 BP).
Low-resolution analysis of phases of human impact.
site description
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Sedimentary sampling
- 2014 New pollen analysis of Étang del Sale.
Strong and reliable chronological control.
High resolution sample analysis.
Pollen and Non Pollen Palynomorphs.
Cross-check with new archaeological data from the Aléria Plain.
Better understanding of socioenvironmental interactions
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
materials & methods
530 cm sedimentary profile
Lithlogical description
Radiocarbon dates
Pollen
Non-Pollen-Palynomorphs
Organic Matter content
Granulometry
Sedimentology
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
results
5920 ± 190 BP
5650 ± 190 BP (M. Reille, 1984)
130
168
206
210
363
cm
cm
cm
cm
cm
2507
2114
2229
2260
3214
±
±
±
±
±
5 Radiocarbon dates...
160
92
170
165
166
cal
cal
cal
cal
cal
BP
BP
BP
BP
BP
age-depth model
results
Reconstructing Palaeoenvironmental Evolution in the
Aléria Plain (Corse) during the last 6000 yr
Pollen analysis
- Similar trends than those studied by M. Reille (1984)
- Local presence of halophilous (salt resistant) plants.
- highly human-perturbed environent
- barren zone at sand layer
results
Environmental history of Sagone Gulf
- Roman and Early Medieval occupation
- Interest on the Bronze Age
- Palynological, sedimentological and macrobiotical remains of Sagone
fluvial sedimentary cores (800 cm depth)
Environmental history of Sagone Gulf
results
228
240
245
282
472
489
593
593
cm
cm
cm
cm
cm
cm
cm
cm
262
318
460
300
1141
1106
1403
1529
±
±
±
±
±
±
±
±
99 cal
87 cal
77 cal
94 cal
93 cal
102cal
94 cal
82 cal
BC
BC
BC
BC
BC
BC
BC
BC
8 Radiocarbon dates
Palynological,
sedimentological and
macrobiotical remains of
Sagone fluvial sedimentary
cores (625 cm depth)
future progress
100
200
300
400
500
600
0
s
tu
Qu la
e
Qu rcu
e ss
Qu rcu p
e si
Rh rcu lex
am s s
Ju n u b
gl us er
E r ans
ic
ac
ea
e
He
lia
C i nt
st h e
Ch us mu
m
e
C i nop
ch o d
As orio iac
te id ea
Po roid eae e
ac ea
ea e
e
Ro
sa
S a ce
n ae
V i g u i s sp
tis o
rb
Fr
a
ax
m
Br inu
as s
Lin sic
a ac
Sc ria eae
ro
F a phu
b a
Lo ace riac
tu ae ea
e
M s
en
t
h
Ru a
m
P l ex
an
Pl tag
an o
Sa tag sp
li o
Ty x lan
c
ph
Sa a-S
xi p a
Eu frag rga
ph a ni
um
S e or
du bia
Na m
rc
Pi iss
st u s
ac
ia
Be
0
s
Al
nu
0
Pi
nu
Work in progress: Sagone diagram
20 40 60 0
0
0
0
0
0
0
20 0
0
0
0
0
0
20 0
0
0
0
0
0 0
0
0
0
0
0
0 0
0
0
0
0
Sagone pollen diagram
- Tests confirm that pollen record from Roman and Bronze Age periods is
available at Sagone
0
0
future progress
Work in progress: Étang del Sale diagram
Étang del Sale pollen diagram
thank you