Szekér- és kerékmodellek a középső bronzkori Nagykároly-Bobáld tellről (original) (raw)

Habarcsok a Keszthely-fenékpusztai késő római erődből: a petrográfiai-geokémiai és mérnökgeológiai vizsgálatok eredményei

Archeometriai műhely, 2024

The Roman fortress of Keszthely-Fenékpuszta, built in the 4 th century AD, was located at the western edge of Lake Balaton on a peninsula bordered by open water and marshy peat bogs. The well-protected fortification played a significant infrastructural role, due to the fact that the lake could be crossed here along a main northsouth road of Pannonia. Archaeological excavations started in 2009 had the primary goal to clarify the location, floor plan and dating of individual buildings (nos. 24, 25 and 27). Based on petrographic, geochemical, and engineering geological investigations of mortars used in the constructions, we were able to gain insight into the possibilities of answering certain archaeological questions with geoarchaeometric methods. Mortar samples were systematically collected from the different locations representing the functions and construction phases. Based on the archaeological research three chronological groups (I.-III: end of 3 rd c. to early 7 th c. AD) were distinguished; two of them belong to the late Roman Period (I.-II.) and one (III.) to the Migration Period. The aggregates of the mortars were analyzed by polarized light microscopy and thermoanalytical method. The chemical examination of the binder was carried out by scanning electron microscopy. Additionally, water absorption, density and compressive strength of the mortars were also determined. Based on the results, we can conclude that the mortars of all three periods are of air lime nature containing Mg and Si impurities and both the binders and additives were produced using local raw materials rich in dolomite components. The higher compressive strength values of the mortars of the 3 rd period (late 5 th to early 7 th c. AD) are probably due to the slightly different composition of the binder, or they can also be explained by the static role of the selected pillars. Kivonat A 4. században Keszthely-Fenékpusztán épült római erőd a Balaton nyugati végén, nyíltvíz és mocsaras tőzeglápok által határolt félszigeten feküdt. A különlegesen jól védett építménynek jelentős infrastrukturális szerepe volt, ugyanis itt lehetett átkelni a Balatonon a Pannoniát észak-déli irányban átszelő főút mentén. A 2009-ben kezdődött régészeti feltárások elsődleges célja az egyes épületek (24-es, 25-ös, 27-es) fekvésének, alaprajzának és keltezésének pontosítása volt. A vizsgált épületeknél használt habarcsok petrográfiai, geokémiai

Tuberkulózis nyomai késő neolitikum - kora rézkori magyarországi emberi maradványokban (Alsónyék-Bátaszék, Dél-Magyarország)

Anthropologiai Közlemények, 2016

Anthropological investigations previously carried out on individuals from this site revealed an interesting paleopathological case of tuberculosis in the form of Pott's disease dated to the early 5th millennium BC. In this study, selected specimens from this osteoarcheological series were subjected to paleomicrobiological analysis to establish the presence of MTBC bacteria. As all individuals showing clear osteological signs of TB infection belonged to a single grave group, 38 individuals from this grave group were analysed. The sample included the case of Pott's disease as well as individuals both with and without osseous TB manifestations. The presence of TB DNA in the individual with Pott's disease was established, confirming the occurrence of TB in Neolithic populations of Europe. Moreover, our molecular analysis indicated that several other individuals of the same grave group were also infected with TB, opening the possibility for further analyses of this unique Neolithic skeletal series.

A polgárdi Szár-hegy andezit telérei és szkarnos képződményei [Andesite dikes and skarn formations of Szár hill, Polgárdi (W Hungary)]

2003

The Transdanubian Central Range (western Hungary) is composed of metamorphic Paleozoic and unmetamorphic Mesozoic sequences. The oldest formations are exposed to the surface along the Balaton Highland and West-Northwest of Lake Velence. The quarry at the Szár Hill (between the villages Polgárdi and Szabadbattyán) exposes white limestone and marble of Devonian sedimentation age. The limestone is croscutted by rhyolite dykes of Permian and andésite dykes of Triassic age. The pyroxene amphibole andésite bodies are strongly transformed to propylite (Q + Kfs + Ms + Chi + Ep + Tre + Pi). Along the contact of the andésite dykes and the limestone-marble host rock skarn mineralization was formed. Both the dykes and the calcium silicate contact zones have irregular shapes. The skarn is missing in case of several dykes where the andésite has an immediate contact to the limestone. The skarn is usually zoned, banded. The endoskarn is developing from the andésite along a few-mm-wide transitional zone. This fuzzy diffusional front is composed of microcrystalline calcium garnet that transforms to fine grained and later on cm-coarse vesuvianite crystals. The isometric and acicular vesuvianite is the major component of the well developed, brown endoskarn. Ca-gamet (Grs 0 to 30%, Adr 70 to 100%), epidote, prehnite and pyrite are present only in subordinate amount; the matrix is calcite. The light green diopside skarn is the next (already exoskam) layer. Usually it is composed of diopside and calcite only. The size of the crystals varies from 40 /xm to >1 cm. Towards the limestone (marble) the next zone is the white wollastonite skarn, which isn't developed everywhere. The magnesium skarn (predazzite) was produced by the thermal effect of the intrusive bodies and the fluid circulation where the host carbonatic sequence had a dolomitic composition before the contact event. The predazzite is basically a brucite-and serpentinecontaining marble, but in several places the relics of tiny forsterite, spinel and periclase crystals are also preserved. These predazzite bodies do not follow the contact zones developed along the andésite dykes; they occur in form of disseminated, irregular bodies. A late hydrothermal transformation has created decomposition and hydration of the calcium silicate minerals. From diopside and wollastonite Si0 2 and Ca 2+ has liberated and formed opal-CT, calcite and aragonite along the calcium exoskam. This light green "opal zone" in some places is as thick as 40 cm. The formation of brucite and serpentine in the Mg-skarn are related also to this late hydrothermal phase. 4-6, 37^14. (In Hung.) Zöldföldi, J. (1998): Mineralogische, petrologische, geochemische und geochronologische Untersuchungen an Ganggesteinen des südwestlichen Austroalpinen Grundgebirges. MSc.