1,721,040 research outputs found
On some unidentified ceramic objects from Seglamen, northern Ethiopia
Full text linkA series of unidentified ceramic objects, dating back to the “Pre-Aksumite” period, was discovered in the site of Seglamen (northern Ethiopia) during an archaeological expedition of the Naples University “L’Orientale”. Minero-petrographic analyses, performed at the Naples University Federico II, evidenced that most samples were manufactured by using a locally available tempering raw material, mostly composed of felsic rock fragments.
SEM observation and XRPD analyses evidenced the occurrence of both well fired (T > 800 °C) and scarcely fired products. The latter most probably represent production wastes and, therefore, another clue of a possible local manufacture
Le analisi archeometriche
No full textIl sito dell’Heraion si trova a circa 2,5 km dalla fascia costiera della Piana del Sele,
in prossimità della foce dell’omonimo fiume. La Piana del Sele è una delle depressioni tettoniche
estensionali del margine peri-tirrenico, fra le quali vi sono quella del Garigliano,
della Piana Campana, e del Golfo di Policastro. Si tratta di un’ampia morfostruttura
depressa di età plio-quaternaria, delimitata a N dai massicci carbonatici meso-cenozoici
dei Monti Lattari e dei Monti Picentini, a E da colline terrigene che si spingono fino ai
rilievi carbonatici meso-cenozoici dei Monti Alburni, e a S/E dalla dorsale dei Monti
Soprano e Sottano e dalle successioni silicoclastiche mioceniche del Cilento
I frammenti ceramici di vernice nera provenienti dal sito di Heraion sono stati
descritti con metodologie minero-petrografiche, al fine di rilevare le caratteristiche macroscopiche
e microscopich
A Late Roman ceramic production from Pompeii
No full textThe Via Lepanto site is one of the best examples showing how the Vesuvian region was partially reconstructed and earlier re-occupied after Vesuvius's eruption in the year 79 AD. The large amount of ceramic finds illustrates the typology in use in this area during the IV and V century AD. Analyses were focused on table and cooking ware productions. Archaeometric data were obtained using chemical and minero-petrographical methods (OM, XRD, XRF and SEM). Grain size measurements using Image Analyses on thin sections and a geochemical comparison with clayey deposits outcropping in the Campania region permitted the identification of the raw materials used for these pottery productions. XRD and SEM completed the data set, establishing the protocols used for pottery production in the Pompeii area during Late Roman period. The Via Lepanto site was part of an exchange network of markets with a periodic frequency, where locally produced and imported pottery was sold, indicating a flourishing network of exchanges spanning short, medium and long distances
Decoding Capua’s roof terracotta: A multi-analytical study of the Fondo Patturelli sanctuary and Alveo Marotta furnace (6th century BCE – 1st century BCE)
Full text linkThe main focus of this study was to examine 25 samples of archaeological ceramic materials currently preserved in the Archaeological Museum of the Ancient Capua and Mitreo investigated in the framework of an international project. These samples primarily consist of architectural terracotta from the Fondo Patturelli extra-urban sanctuary, as well as architectural terracotta, pottery and waste material from the nearby Alveo Marotta furnace.
To investigate these artifacts, a multi-analytical mineralogical-petrographic approach was performed. Thin section observations revealed that almost all samples exhibit a coarse-grained paste. The fragments were categorized into three petrographic groups based on the type and quantity of temper, which is mostly composed of volcanic grains. They include lithics and juvenile fragments (obsidians and pumices) ascribed to the products of the major Campanian eruptions as detected via FESEM-EDS. Bulk chemical analyses (WD-XRF) show that almost all samples form a homogeneous group made with Ca-rich clayey raw materials, also including three wastes of tiles from the Alveo Marotta. By contrast, other two wastes from Alveo Marotta were produced with Ca-poor clay suggesting the use of a different raw material.
From a technological point of view the samples are characterized by a thermal range that varies from 750 to 900 °C, notably different between the earlier and later production periods, with the former fired at lower temperatures
Raw Materials for Archaeological Pottery from the Campania Region of Italy: A Petrophysical Characterization
No full textWe performed petrophysical analyses on 34 clayey samples of different geological origin within the Campania region of Italy in order to determine possible sources of raw materials used to produce ancient pottery. Possible raw material sources can be grouped into high-CaO clays (HCC) and low-CaO clays (LCC). HCC are mainly represented by more recent (Miocene-Pleistocene) basinal sediments whereas LCC tend to be associated with basinal, alluvial, and pyroclastic deposits. A chemical comparison between clayey raw materials, modern ceramic replicas, and Campanian archaeological ceramics of several typologies (common ware, cooking ware, fine tableware, amphorae, and bricks) from 8th century B.C. to the Middle Ages (a total of 350 ceramic samples) indicates that HCC were extensively used for common wares and that these were either mixed with temper or levigated. In contrast, most of the LCC were used for the production of cookware. We also analyzed the technological potential of the sampled raw materials, taking into consideration their actual and possible uses. We observed that most HCC deposits were well suited for tableware and amphorae, whereas LCC were better for cookware and some fine tableware
Archaeometric study on terra sigillata from Cales (Italy)
No full textMineralogical and petrographical studies on 23 ancient pottery fragments of terra sigillata from ancient Cates (today Calvi Risorta, Caserta) are here discussed. Stamps on pottery surfaces assigned the fragments to Cales and other Italian workshops acting in Arezzo and Northern Italy area between 1st century B.C.-1st century A.D., other stamped fragments have an uncertain provenance.
The mineralogical and petrographical features of pastes have been detected using optical microscopy, X-ray diffraction, X-ray fluorescence, and DTA-DTG analyses.
The geochemical comparisons among ceramics, production indicators of Calenian pottery (Black Glazed pottery spacers) and local clayey raw materials allowed to distinguish locally produced potsherds from imported ones. Moreover, the whole archaeological and archaeometric data set allowed to draw main technological aspects of a fine ware production much used on rich roman tables
Clays from the Bay of Naples (Italy): New insight on ancient and traditional ceramics
No full textThe features of two clayey raw materials from the Bay of Naples and their fired products were investigated via minero-petrographic and physical techniques.Clay preparation and firing dynamics were performed following a process similar to that performed by ancient and traditional potters. A high-CaO marine clay from Ischia was mixed with different amounts of volcanic temper in order to replicate most common ware. These mixtures show a fair mechanical resistance starting from relatively low firing temperatures (>850◦C). The addition of temper resulted in different technological characteristics. A low-CaO weathered pyroclastics from the Sorrento Peninsula was prepared to simulate heat resistant and refractory ceramics. Fired products are characterised by a less resistant ceramic body up to 1000◦C compared to Ischia ceramics. Despite worse strength these ceramics show a porous structure, yielding better refractory performances
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