Charophyte Population Dynamics during the Late Quaternary at Lake Bibersee, Switzerland

1999 ◽  
Vol 47 (3) ◽  
pp. 315 ◽  
Author(s):  
Jean Nicolas Haas
Keyword(s):  
Bronze Age ◽  
Lake Level ◽  
Climatic Factors ◽  
Late Quaternary ◽  
Prehistoric Agriculture ◽  
The Holocene ◽  
Ph Values ◽  
Middle Bronze Age ◽  
The Town ◽  
Boreal Period

Oospores of 11 charophyte species were found in the Late Quaternary gyttja deposits of Lake Bibersee near the town of Zug. Except for the Boreal period rarely more than three different species were growing simultaneously during the Holocene. This compares well to typical Characeae lakes of the same size today, and shows that considerable changes in the hydrophyte diversity have taken place through time. During the first part of the Holocene the lake was oligotrophic and the species composition was mainly regulated by lake-level fluctuations due to climatic factors. During the younger periods of the Holocene the lake became mesotrophic, and pH values were for a longer period slightly alkaline. During the Early to Middle Bronze Age (1900–1400 BC) the considerable alterations in the hydrophyte composition and the simultaneous extensive prehistoric agriculture on the fertile shores of the lake point to human impact as the primary cause for changes in charophyte diversity.

Unpublished Middle Minoan and Late Minoan I material from the 1962–3 excavations at Palaikastro, East Crete (PK VIII)

2007 ◽  
Vol 102 ◽  
pp. 153-217
Author(s):  
Carl Knappett ◽  
Anna Collar
Keyword(s):  
Bronze Age ◽  
Preliminary Report ◽  
Good Evidence ◽  
Current Paper ◽  
Middle Bronze Age ◽  
The Town

Results of excavations in 1962–3 at the Minoan coastal town of Palaikastro were published in the Annual in 1965 and 1970, as PK VI and PK VII. While those publications did report on all excavated contexts, in some cases this took the form of a preliminary report pending fuller study. The current paper (PK VIII) fills in most of the main gaps, particularly where the Middle Minoan period is concerned, but also with some attention to the Early and Late Minoan periods. Contexts and deposits from different blocks in the town are presented, as well as from outside the main town towards the area known as Sarantari. These provide good evidence for the existence of particular phases of occupation in the town, notably throughout the Middle Minoan period (MM IA, IB, II, IIIA and IIIB), as well as in EM IIB and LM IB. Some of these phases are not very well known at Palaikastro, or in east Crete more generally. This paper thus contributes to a fuller characterisation of certain ceramic phases at the level of both the site and the region, as well as supplementing our knowledge of the long-term occupation of this important coastal town throughout the Middle Bronze Age.

A Preliminary Investigation of Two Prehistoric Cave Sites in Southern Albania

2009 ◽  
Vol 104 ◽  
pp. 9-26 ◽  
Author(s):  
K.D. Francis ◽  
D.J. Bescoby ◽  
I. Gjipali
Keyword(s):  
Bronze Age ◽  
Iron Age ◽  
Preliminary Investigation ◽  
Radiocarbon Dates ◽  
Lithic Assemblage ◽  
The North ◽  
Late Iron Age ◽  
Middle Bronze Age ◽  
Trading Networks ◽  
The Town

In this article we describe the evaluation of two prehistoric sites situated within the coastal zone of south-western Albania, originally investigated by the Italian prehistorian Luigi Cardini in 1939. The first is a cave site in the town of Himara; the second a rock-shelter at Kanalit in the Acroceraunian Mountains to the north. Investigations at both locations revealed stratified evidence of prehistoric activity dating from the mid-Holocene. At Kanalit, an extensive lithic assemblage provided evidence for the exploitation of the adjoining coastal lowlands during the Mesolithic, while at Himara, a largely unbroken sequence of deposits records often intensive human activity at the cave from the Early Bronze Age. Radiocarbon dates have provided a significant independent chronological marker for Early/Middle Bronze Age horizons. The ceramic evidence indicates a predominance of local influences, the site not becoming part of wider trading networks until the late Iron Age, c. seventh to sixth centuries BC.Σε αυτό το άρθρο πραγματευόμαστε τη σημασία δύο προϊστορικών θέσεων, οι οποίες βρίσκονται στην παράκτια ζώνη της ΝΔ Αλβανίας. Οι θέσεις αυτές είχαν αρχικά ερευνητεί από τον Ιταλό προϊστορικό αρχαιολόγο Luigi Cardini το 1939. Η πρώτη θέση αφορά ένα σπήλαιο στην πόλη της Χειμάρρας και η δεύτερη μία βραχοσκεπή, στη θέση Kanalit, στα Ακροκεραύνια όρη προς βορρά. Έρευνες στις δύο θέσενς αποκάλυψαν στρωματογραφημένες ενδείξεις προϊστορικής δραστηριότητας, που χρονολογούνται από το μέσο Ολόκαινο. Στη θέση Kanalit ένα ευρύ σύνολο λίθινων αντικειμένων παρέχει στοιχεία για την εκμετάλλευση των γειτονικών παράκτιων πεδινών περιοχών κατά τη Μεσολιτική περίοδο. Στο σπήλαιο της Χειμάρρας μία σειρά από αδιάσπαστες, στο μεγαλύτερο μέρος τους, αποθέσεις μαρτυρεί συχνά έντονη ανθρώπινη δραστηριότητα από την Πρώιμη Εποχή του Χαλκού. Οι ραδιοχρονολογήσεις παρέχουν ένα σημαντικό ανεξάρτητο χρονολογικό δείκτη για τους ορίζοντες της Πρώιμης/Μέσης Εποχής του Χαλκού. Η κεραμική φανερώνει την επικράτηση τοπικών επιρροών, με τη θέση αυτή να μην λαμβάνεν μέρος στα ευρύτερα εμπορικά δίκτυα πριν από την όψιμη Εποχή του Σιδήρου, περίπου τον 70 – 60 αιώνα π.Χ.

scholarly journals A Espada do Monte das Oliveiras (Serpa) - uma arma do Bronze Pleno do Sudoeste

2020 ◽  
pp. 1055-1064
Author(s):  
Rui M. G. Monge Soares ◽  
Pedro Valério ◽  
Mariana Nabais ◽  
António M. Monge Soares
Keyword(s):  
Elemental Composition ◽  
Bronze Age ◽  
Detailed Examination ◽  
Middle Bronze Age ◽  
Southern Iberia ◽  
Spherical Caps ◽  
The Town ◽  
Natural Alloy ◽  
Arsenical Copper

In this paper, we present a detailed examination of a sword dating from the Southwestern Middle Bronze Age, which was found several years ago during farming activities near the town of Serpa, Portugal. The sword was apparently found out of an archaeological context. The finder of the sword, who kindly allowed us to study it, cleaned the artefact of its corrosion and kept it in good conditions. The sword is about 50 cm long and its handle show two rivets (another one is missing) which are kept housed in notches. The rivets’ heads are spherical caps covered with a golden leaf. The use of a p-EDXRF equipment allowed us to determine and quantify the elemental composition of the blade, as well as of the golden leaf covering the rivet heads. It was thus possible to establish that the blade was manufactured with arsenical copper, while the composition of the golden leaf refers to a natural alloy. Finally, the Monte das Oliveiras sword is compared with several other coeval examples of Southern Iberia weaponry. Its hilt design, namely the three peripheral notches, seems to be of an unique variant in swords, being relatively rare in similarly shaped weapons, such as daggers.

scholarly journals Late Quaternary geochronologic record of soil formation and erosion: Effects of climate change on Mojave Desert hillslopes (Nevada, USA)

Geology ◽  
2021 ◽  
Author(s):  
L.P. Persico ◽  
L.D. McFadden ◽  
J.R. McAuliffe ◽  
T.M. Rittenour ◽  
T.E. Stahlecker ◽  
...  
Keyword(s):  
Climate Change ◽  
Mojave Desert ◽  
Vegetation Change ◽  
Climatic Factors ◽  
Late Quaternary ◽  
Perennial Grass ◽  
Soil Development ◽  
Grass Cover ◽  
The Holocene ◽  
Middle Holocene

Climate change is an often-cited control on geomorphic processes in the arid southwestern United States, but links to direct climatic factors and vegetation change remain under debate. Hillslopes at a site in the eastern Mojave Desert in southern Nevada are mantled by 0–1.5 m of colluvial deposits. Accumulation of weathered bedrock combined with eolian inputs of fine sand and silt led to the formation of well-developed soil profiles. Surface sediments from both sources were incorporated into colluvium, allowing both processes to be dated with optically stimulated luminescence (OSL). OSL ages indicate a period of increased colluviation in the Late Pleistocene facilitated by enhanced bedrock weathering and dust deposition. Hillslope aspect strongly controls predominant soil environments and associated vegetation. Well-developed soils with dense grass cover extensively mantle the mesic north-aspect hillslopes, while more xeric south-aspect hillslopes are dominated by thin colluvium with minimal soil development, extensive bedrock exposure, and desertscrub vegetation. Remnants of older colluvium with moderately developed soils on south aspects, however, indicate they were once more extensively mantled by thicker colluvial deposits. The transition to drier conditions in the Holocene diminished vegetation cover on more xeric south aspects, triggering widespread erosion, whereas the more mesic north aspects retained denser grass cover that minimized erosion. The transition to drier conditions in the Holocene altered the vegetation; however, persistent perennial grass cover minimized erosion into the middle Holocene. Increasing aridity during the middle Holocene significantly reduced grass cover on more xeric south aspects, triggering erosion and alluvial deposition. OSL dates of dust incorporated into terrace sediments indicate late Middle Holocene aggradation and soil development in the Late Holocene. In contrast, maintenance of substantial perennial grass cover on mesic north aspects minimized erosion from those hillslopes throughout the Holocene.

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