About
143
Publications
30,967
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,221
Citations
Citations since 2017
Introduction
Skills and Expertise
Publications
Publications (143)
Magmatic rocks from the Dolomites, Carnic and Julian Alps, Italy, have been sampled to investigate the origin and geodynamic setting of Triassic magmatism in the Southern Alps. Basaltic, gabbroic and lamprophyric samples have been characterized for their petrography, mineral chemistry, whole-rock major and trace elements, and Sr, Nd and Pb isotopic...
Exceptional magmatic events coincided with the largest mass extinctions throughout Earth’s history. Extensive degassing from organic-rich sediments intruded by magmas is a possible driver of the catastrophic environmental changes, which triggered the biotic crises. One of Earth’s largest magmatic events is represented by the Central Atlantic Magmat...
The Norian magmatic rocks of Jabuka, Brusnik and Vis Islands (Croatia) and their bearing on the evolution of Triassic magmatism in the Northern Mediterranean. The magmatic rocks from Jabuka, Brusnik, Vis Islands and the submerged Brusnik plateau have been investigated to define their age and genetic affinity, identifying their role in the geodynami...
The Penatecaua magmatism (∼201 Ma) is part of the Central Atlantic Magmatic Province (CAMP) and is represented by voluminous sills in the Amazonas Basin, north Brazil. The sills appear south of the Amazonas River, particularly in the Medicilândia, Placas, and Rurópolis cities. To the north of the river, near Monte Alegre and Alenquer, smaller sills...
A group of Euganean trachytic grinding stones from Slovenia and the available data about the same type of artefacts in the whole Caput Adriae are here presented. The occurrence of Iron Age saddle querns in Karst and Istria is confirmed but our study suggests a likely provenance from Mts. Cero/Murale instead of Mt. Altore/Rocca Pendice, as previousl...
The accurate textural characterization of mantle xenoliths is one of the fundamental steps to understanding the main processes occurring in the upper mantle, such as sub-solidus recrystallization, magmatic crystallization and metasomatism. Texture, composition, and mineralogy reflect the temperature, pressure, stress conditions, melting and/or cont...
The Fernando de Noronha (FN) archipelago is located in the Atlantic Ocean, 350 km off the coast of
NE Brazil. Its volcanism is characterized by multiple eruptions of different ages that have been triggered
by intermittent melting of an enriched mantle source. This process is considered to be generated by the FN
asthenospheric plume (Lopes & Ulbrich...
The paper presents a group of four, approximately 0.5m large, stone disks from entrances or cemeteries of two protohistoric hillforts of north-eastern Adriatic. The disks, having a sparse chronology with the exception of one dated to the Middle Bronze Age, show flat and plain surfaces or covered with sub-circular depressions. One disk shows two lar...
Concentrations of fluorine and chlorine were measured in glasses (quenched melts) and coexisting clinopyroxene, orthopyroxene, olivine, and plagioclase in run products of experiments previously used to measure sulfur partitioning between these phases. The partitioning of F between clinopyroxene and silicate melt was determined in 13 experiments at...
Investigating the texture and chemistry of mantle xenoliths allow us to constrain the nature of the upper mantle,
the mechanism that generate melts and the evolution of the lithosphere beneath regions where no samples were
exposed by tectonic activity. Texture, as well as chemical composition and mineralogical paragenesis, reflects
the temperature,...
Quite rare pottery shards showing a paste rich in black sand particles, possibly igneous minerals, have been discovered in late Republican Roman sites of Trieste area (north-eastern Italy) and south-western Slovenia in the Caput Adriae. Most of them belong to late Greco-Italic and Dressel 1 amphora types, in use from the end of the 3rd and the begi...
Post-Variscan Early Permian magmatism is widespread from Corsica to the Eastern Alps. After the formation of the Variscan orogenic belt between Laurussia and Gondwana, felsic and mafic bodies were emplaced during an extensional tectonic phase. This study focuses on a mafic dyke swarm that intruded in the region of Ajaccio (Corsica, France) and on a...
The extensive investigation carried out in recent years at the UNESCO site of Al-Khutm (Ibri, Oman) has allowed to uncover the monumental remains of a tower dated back to the third millennium BC and to collect an abundant ceramic assemblage from the associated soil deposits. Eighteen selected pottery samples have been investigated using a multi-ana...
Magmatic systems are dominated by five volatiles, namely H 2 O, CO 2 , F, Cl, and S (the igneous quintet). Multiple studies have measured partitioning of four out of these five volatiles (H 2 O, CO 2 , F, and Cl) between nominally volatile-free minerals and melts, whereas the partitioning of sulfur is poorly known. To better constrain the behavior...
Twenty-two Late-Copper-Age decorated cross-footed bowls from the Trieste Karst (north-eastern Italy) and the Deschmann's pile dwellings (Ljubljansko barje, Slovenia), recently investigated using X-ray computed microtomography (microCT), have been studied and chemically analysed using non-destructive prompt gamma activation analysis (PGAA). The main...
We analysed the crystallography and the chemistry (major and trace elements) of 16 Cr-diopsides belonging to mantle xenoliths from northern (Waw-En-Namus, Libya; Bou-Ibalrhatene and Tafraoute, Morocco) and central Africa (Nyos and Barombi maars, Cameroon). These mantle xenoliths were extracted from mantle domains
underlying a metacraton (Libya), a...
The petrographic studies of mantle rocks and their minerals, in combination with chemical characterization
and trace elements abundances, is essential in the comprehension of the lithospheric mantle evolution. In
such view, mantle xenoliths present textures that reflect temperature, pressure, stress conditions and possibly
depletion or metasomatism...
About 20 Late Copper Age bowls with cross-shaped foots from Deschmann’s pile dwellings (Ljubljansko barje, central Slovenia) and Trieste Karst (North-Eastern Italy) have been investigated using X-ray computed microtomography (microCT) in order to study the vessel-forming technique, to characterise their pastes and to test the hypothesis that some K...
We analysed the crystallography and the chemistry (major and trace elements) of 16 Cr-diopsides belonging to mantle xenoliths from northern (Waw-En-Namus, Libya; Bou-Ibalrhatene and Tafraoute, Morocco) and central Africa (Nyos and Barombi maars, Cameroon). These mantle xenoliths were extracted from mantle domains underlying a metacraton (Libya), a...
A collection of polished stone axes from a late Neolithic site and an Early Bronze Age hill fort in South Tyrol (Italy) have been analysed through a multi-analytical approach, mainly based on non-destructive techniques (i.e. Raman spectroscopy, X-ray fluorescence and prompt gamma activation analysis) to identify the raw materials used in the same a...
Abundant clay burnt plaster remains and a few flaked tools, including an obsidian artefact, found on the
ground surface not far from Trieste (north-eastern Italy) provide rare evidence of a possible prehistoric open-air occupation in the area. To confirm and detail their ancient origin, a plaster sample has been dated between 4000 and 2000 B.C. via...
SUMMARY – Reconstructing the archaeological landscape in the Trieste Karst (north-eastern Italy) through airborne LiDAR remote sensing – The archaeological landscape of Trieste Karst is rich
in protohistoric hillforts built from the Early/Middle Bronze Age to the Late Iron Age. Airborne LiDAR data have been analysed for the archaeological prospecti...
SUMMARY – Neolithic and Copper Age polished stone axes in the Caput Adriae: synthesis of a long-term interdisciplinary project – The report entitled “Greenstone” shaft-hole axes of northeastern Italy, Slovenia, Croatia: a new research project presented at the 39th IIPP Scientific Conference dedicated to raw materials and exchanges in Italian prehis...
The trigger of the Triassic magmatism in the Eastern Alps (about 235 Ma) is still highly debated, and both extensional and compressional theories are invoked. The first is mainly supported by the related extensional geologic structures, while the second family of theories is supported by the chemistry of the better exposed lithotypes and the high s...
Sinkholes are a well-known geologic hazard but their past occurrence, useful for subsidence risk prediction, is difficult to define, especially for ancient historic times. Consequently, our knowledge about Holocene carbonate landscapes is often limited. A multidisciplinary study of Trieste Karst (Italy), close to early Roman military fortifications...
Roman and modern shoe hobnails.
Hobnails n. 74 and n. 78 are probably modern artefacts. For the finding position see S3 Fig. Scale bar: 1 cm; drawings by A. Fragiacomo.
(TIF)
Studied area (light green) with the surveyed surface mainly corresponding to modern paths (2.3% of the total).
Red dots: Roman shoe hobnails found on surface; orange dots: Roman shoe hobnails found through geomagnetic investigations. Map was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/) with contour lines at 5 m.
(TIF)
Comparison between Wenner and Wenner-Schlumberger ERT profiles.
(A) ERT Wenner inverted profiles ERT-1. (B) ERT Wenner-Schlumberger inverted profiles ERT-1. (C) ERT Wenner inverted profiles ERT-2. (D) ERT Wenner-Schlumberger inverted profiles ERT-1. The results obtained with the two different acquisition geometries are almost identical (except some...
Numeration of the Roman shoe hobnails.
Map was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/) with contour lines at 5 m.
(TIF)
Roman shoe hobnails.
For the finding position see S3 Fig. Scale bar: 1 cm; drawings by A. Fragiacomo.
(TIF)
Roman shoe hobnails.
For the finding position see S3 Fig. Scale bar: 1 cm; drawings by A. Fragiacomo.
(TIF)
Roman shoe hobnails.
For the finding position see S3 Fig. Scale bar: 1 cm; drawings by A. Fragiacomo.
(TIF)
Area b of Fig 5.
(A) LiDAR-derived hillshade. (B) Modern land division. Several sub-parallel road tracks (features indicated by arrows and black lines) are covered by modern field division walls. Red dots: Roman shoe hobnails. Figure was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/).
(TIF)
Area d of Fig 5.
(A) LiDAR-derived hillshade. (B) Digital transcription of the road (features indicated by arrows and black lines) and other main archaeological features. Red dots: Roman shoe hobnails. Figure was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/) with contour lines at 5 m.
(TIF)
Least cost path.
The red line corresponds to the least cost path calculated between locations a and b. Map was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/) with contour lines at 5 m.
(TIF)
Roman shoe hobnails.
For the finding position see S3 Fig. Scale bar: 1 cm; drawings by A. Fragiacomo.
(TIF)
Distribution of Republican and Imperial Roman shoe hobnails.
(A) Hobnails c in use from Caesar’s Gallic War, or possibly even earlier, to the Early Augustan period. (B) Hobnails e in use mainly between the 1st and 2nd century AD (b). Maps were created with QGIS version 2.14.0 (http://www.qgis.org/it/site/) with contour lines at 5 m.
(TIF)
Area e of Fig 5.
(A) LiDAR-derived hillshade. (B) digital transcription of ancient field division system (features indicated by white arrows and brown lines) and possible road remains (features indicated by black lines). Red dots: Roman shoe hobnails. Figure was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/).
(TIF)
Possible traces of Roman land division in the Karst with an orientation of about 42 degrees east of north.
The top structures of the large San Rocco military site approximately show the same orientation [4]. Map was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/).
(TIF)
Area c of Fig 5.
(A) LiDAR-derived hillshade. (B) Modern land division. Surviving road tracks segments (features indicated by arrows and black lines) are crossed by modern field division walls. Red dots: Roman shoe hobnails. Figure was created with QGIS version 2.14.0 (http://www.qgis.org/it/site/).
(TIF)
Area g of Fig 5.
(A) LiDAR-derived hillshade. (B) Modern land division. Green lines show the remains of ancient buildings of probable Roman age. Brown lines show possible traces of Roman land division walls. Black lines indicate other archaeological features not reported in the 19th century Franciscan Cadastral Maps nor in the current cadastre. Fig...
The Triassic units in the southern eastern Alps include a unique suite of magmatic products, from lamprophyres, basalts and gabbroic rocks, to rhyolites and granitoids. Only few studies exist that consider this magmatic province as a whole and geochemical data are still missingthat can help constraining the main magmatic processes. The latter issue...
Lava flow sequences were sampled in the central part of the Paraná basin aiming to verify the time-related evolution of the Paraná basaltic magmatism. It is shown that low- and high-Ti basalts were erupted synchronously. In particular, Esmeralda and Pitanga flows are interlayered, with the former prevailing in the upper part of the sequence. Eviden...
A Cordilheira do Ybytytyruzú na região centro‑oriental do Paraguai é formada dominantemente de derrames de lavas toleíticas de idade Cretáceo Inferior (130–134 Ma) cortados por diques alcalinos potássicos e corpos intrusivos com idades entre 125 e 127 Ma. Estudos petroquímicos focalizando 14 amostras de diques da região mostram uma aparente afinida...
The Florianópolis Dyke Swarm is located in Santa Catarina Island, comprising also the adjacent continental area, and belongs to the Paraná Magmatic Province (PMP). The dyke outcrops in the island are 0.1–70 m thick and most of them are coast-parallel (NE-SW trending), with subordinate NW-SE trending. The vast majority of the dykes has SiO2 varying...
The lithospheric architecture of Africa consists of several Archean cratons and smaller cratonic fragments, stitched together and flanked by polycyclic fold belts. Here we investigate the structure and chemistry of spinels from lithospheric mantle xenoliths from distinct tectonic settings, i.e. from the the Saharan metacraton in Libya (Waw-En-Namus...
The amalgamation of the Western Gondwana (including the Greater Gondwana supercraton) occurred at 600 Ma during the Brazilian – Pan African orogeny. A plate junction related to this event is marked by the Transbrazilian lineament which separates the South American continent into two sectors: the Eastern Paraguay-Brazilian and Central Andean domains...
After some works of Jaime Baez-Presse that quoted the presence of diamonds in Eastern Paraguay, we have perfprmed a whole sampling a study relative to the indicator mineral for diamonds. Indicator minerals are mineral species that, when appearing as transported grains in clastic sediments, indicate the presence in bedrock of a specific type of mine...
We studied the trace element chemistry of mantle xenolith spinels from Libya (LB), Morocco (MOR) and Cameroon (CAM). Lenaz et al. (2000) and Kamenetsky et al. (2001) found out that it is possible to distinguish spinels restitic after magma extraction (so-called peridotitic) and spinels crystallized from melts percolating in the mantle (so-called ma...
This work describes rare accessory minerals in volcanic and subvolcanic silica-undersaturated peralkaline and agpaitic rocks from the Permo-Triassic Cerro Boggiani complex (Eastern Paraguay) in the Alto Paraguay Alkaline Province. These accessory phases consist of various minerals including Th-U oxides/silicates, Nb-oxide, REE-Sr-Ba bearing carbona...
We welcome the comment by Michard et al. (2013) as it gives us the opportunity to better discuss the Jurassic-Cretaceous magmatism of the High Atlas (Morocco). In their comment, Michard et al. (2013) focus on three main points which are: (i) the age of the basalts from Naour, (ii) the structural history of the Central High Atlas and (iii) the geody...
The first results of Pb isotope compositions of the high-Ti Mesozoic dykes of the Southern Espinhaço are presented. The results do not show large variations and are significantly more radiogenic than the Pb isotope compositions of the high-Ti tholeiites from the Paraná Continental Flood Basalts. The data combined with published geochemical and Sr-N...
A group of Neolithic potsherds fromcaves of the Trieste Karst (northeastern Italy) belonging to the Vlaška Group
has been studied through a multi-analytical approach mainly based on non-destructive X-ray computed
microtomography (μCT) and portable X-ray fluorescence (XRF), combined with X-ray diffraction (XRD) and optical microscopy (OM) to investi...
Abstract
The West Iberian Margin (WIM) preserves onshore testimonies of three Mesozoic magmatic cycles. In this paper, we present and discuss 40Ar/39Ar ages and geochemical data for the second cycle, which occurred at least from 148 Ma to 140 Ma, at the Jurassic-Cretaceous transition, during the late stages of an important extensional event associ...
The lithospheric architecture of Africa consists of several Archean cratons and smaller cratonic fragments, stitched together and flanked by younger fold belts. The three larger cratons (West Africa, Congo and Kalahari Cratons) are underlain by Sub Continental Lithospheric Mantle (SCLM) extending to ≥300 km depth and having a prevailing depleted co...
A group of Bronze Age whetstones from protohistoric hill forts, locally called castellieri, of eastern Friuli Venezia Giulia (north-eastern Italy) has been studied using different techniques, including non-destructive methods such as X-ray computed microtomography and portable X-ray fluorescence, in order to characterize the raw material and define...
Significance
Archaeological evidence from the Trieste area (Italy), revealed by airborne remote sensing and geophysical surveys, provides one of the earliest examples of Roman military fortifications. They are the only ones identified in Italy so far. Their origin is most likely related to the first year of the second Roman war against the Histri i...
An interdisciplinary study of the archaeological landscape of the Trieste area (northeastern Italy), mainly based on airborne light detection and ranging (LiDAR), ground penetrating radar (GPR), and archaeological surveys, has led to the discovery of an early Roman fortification system, composed of a big central camp (San Rocco) flanked by two mino...
The Planalto da Serra igneous rocks form plugs, necks and dykes of carbonate-rich ultramafic lamprophyres (aillikites and glimmerites with kamafugitic affinity) and carbonatites (alvikites and beforsites). Phlogopite and/or tetraphlogopite, diopside and melanitic garnet are restricted to aillikitic rock-types, whereas pyroclore occurs only in carbo...
Cretaceous to Eocene sandstones from the Southeastern Alps and Outer Dinarides (Italy, Slovenia and Croatia) have been geochemically determined to detect their provenance. The first arenaceous strata of the Julian Basin are strongly chemically influenced by the disgregation of metamorphic and not-metamorphic rock types related to the ancient Vardar...
![Figure 2. Sulfur concentrations (see Table DR4a [see footnote 1]) for...](profile/Herve-Bertrand/publication/265508576/figure/fig2/AS:392335453114371@1470551469052/Sulfur-concentrations-see-Table-DR4a-see-footnote-1-for-the-natural-augites-right_Q320.jpg)
Volcanic gases can have devastating impacts on Earth’s environment and life. However, measurement of volatile elements in prehistoric magmas is challenging. We present a new method for determining sulfur contents in magmas using its concentrations in clinopyroxenes and an experimentally determined crystal-melt partition coefficient. Using this meth...
The Planalto da Serra igneous rocks form plugs, necks and dykes of carbonate-rich ultramafic lamprophyres (aillikites and glimmerites with kamafugitic affinity) and carbonatites (alvikites and beforsites). Phlogopite and/or tetraphlogopite, diopside and melanitic garnet are restricted to aillikitic rock-types, whereas pyroclore occurs only in carbo...
The crystal chemistry of about 20 crystals of Cr-spinels from lherzolite and harzburgite xenoliths
from the Middle Atlas Neogene-Quaternary Volcanic Field of Morocco and of the Waw-En-
Namus volcano in Libya have been studied by means of X-ray single crystal diffraction. Cell
edges, a0, for Moroccan spinels are in the range 8.1334 (4) – 8.2021 (2)...
In this study we show the result of a study concerning approximately forty axes, mainly discovered in the Copper Age pile dwellings of Ljubljansko barje (central Slovenia) and in the neighbouring areas of Caput Adriae. The studied shaft-hole axes, characterized by homogeneous typology but slightly different raw materials, have been called Ljubljana...
The crystal chemistry of nine Cr-spinels from lherzolite and harzburgite xenoliths from the Middle Atlas Neogene-Quaternary Volcanic Field of Morocco have been studied by means of X-ray single-crystal diffraction and electron microprobe analyses. Cell edges are usually within the range 8.13-8.14 angstrom, but there are three samples with longer a v...
