Robert Anczkiewicz

Robert Anczkiewicz
Polish Academy of Sciences | PAN · Institute of Geological Sciences

Professor

About

98
Publications
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Publications

Publications (98)
Article
Full-text available
The Dom Feliciano Belt in southern Brazil and Uruguay represents the western half of a Neoproterozoic orogenic belt located in the southern portion of the South Atlantic Neoproterozoic Orogenic System. Current interpretations are divided as to the nature of orogenesis in this belt, in part owing to lacking geochronological constraints. Metamorphose...
Article
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Determining pressure and temperature variations between high-pressure/low-temperature (HP–LT) eclogite blocks is crucial for constraining end-member exhumation models; however, it has historically been challenging to constrain eclogite pressures due to the high variance associated with this bulk-rock composition. In this work, we utilize quartz-in-...
Article
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The relations between Barrovian- and Buchan-type metamorphic series in the Chinese Altai remain obscure, and hence a representative region of the central part of the Chinese Altai was investigated to address this issue, using combined microstructural, petrological and geochronological methods. In the region, Barrovian-type garnet, staurolite, kyani...
Article
Foreland basins associated with collisional mountain belts undergo postdepositional deformation in response to compressive stress exerted from the evolving orogen. The low thermal regime of such processes requires sensitive methods to unravel the structural evolution of such regions. In this study, we conducted apatite fission track (AFT) and (UTh)...
Article
Full-text available
The paper presents whole rock chemical composition and Sr-Nd isotope data from selected metabasic rocks from the Mississippian and Pennsylvanian sequences of the Northern Gemeric Unit. The analysed metabasic rocks belong to the subalkaline magmatic series with Nb/Y ratios ranging from 0.03 to 0.21. They fit into the low-Ti tholeiitic series, charac...
Article
The aim of this paper is to determine the composition and age of high-temperature (HT) hydrothermal fluids in Closepet granites (Dharwar craton, India). The magmatic origin of the Neoarchaean Closepet batholith has been recognized and dated many times, whereas a HT fluid system, strong evidence for which has been partly investigated, has never been...
Article
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The ca. 2 Ga retrogressed eclogites in the Usagaran Belt in central Tanzania are among the oldest documented eclogites in the world. As such, they have been used to pinpoint the thermal conditions of the onset of modern style subduction on Earth. Two samples of retrogressed mafic eclogite have been interrogated to reconstruct the metamorphic histor...
Article
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Mobility of people and goods during the Upper Paleolithic has proven difficult to reconstruct given the relative rareness of remains. Nevertheless, archaeological contexts like the Late Pleistocene horizon of Borsuka Cave (Southern Poland) represent a unique opportunity to explore patterns of objects’ transportation across Central Europe. We invest...
Article
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We studied the petrographical characteristics and bulk chemical composition along with the age of detrital zircon grains from quartzites exposed in the western part of the Orlica-Śnieżnik dome in the Saxothuringian zone. Age spectra of detrital zircons were obtained by U–Pb laser ablation inductively coupled plasma mass spectrometry dating. The zir...
Article
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The Beishan complex is composed of orthogneiss and metagreywacke that both enclose bodies of eclogites and serves as a unique example for comparative petrological study of all these lithologies. The rocks show earliest regional steep N‐S striking fabric (S2) preserved in low strain domains that is reworked by ubiquitous steep N‐NE dipping cleavage...
Article
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Linking mineral growth and time is required to unravel the evolution of metamorphic rocks. However, dating early metamorphic stages is a challenge, due to subsequent retrograde overprinting. A perfectly fresh eclogite and a former eclogite retrogressed under amphibolite facies from the southern French Massif Central (Lévézou massif, Variscan belt)...
Article
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We thank Prof. Büttner for his comments on our paper (van Schijndel et al., 2020), which allow us to clarify our work and the tectonic model we proposed for the eastern margin of the Namaqua Sector of the Namaqua Natal Metamorphic Province. The Kaaien Terrane forms a tectonic transition between the Kaapvaal Craton, Rehoboth Province, Kheis belt and...
Article
The paper presents results of the radioecological investigation carried out in south-western Greenland shoreline. There were examined over 50 samples of lichens and mosses collected from 7 locations during two scientific expeditions conducted in the summer of 2012-2013. The levels, trends and the most likely origin were determined for following nat...
Article
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Lawsonite eclogite and garnet blueschist occur as metre‐scale blocks within serpentinite mélange in the southern New England Orogen in eastern Australia. These high‐pressure fragments are the products of early Palaeozoic subduction of the palaeo‐Pacific plate beneath East Gondwana. Lu–Hf, Sm–Nd and U–Pb geochronological data from Port Macquarie sho...
Article
This research concerned radioactivity of lichens and mosses from coastal zones of the Canadian Arctic and Alaska. Over 50 samples were collected from 7 positions during two scientific expeditions in 2012 and 2013. The tundra contamination caused by anthropogenic radionuclides was relatively low, reaching mean values with SD's of: 17.4 ± 3.5 Bq/kg f...
Chapter
This chapter focuses on issues that are related to analysis of high‐throughput proteomics and metabolomics data generated by studies employing mass spectrometry (MS). It uses the linear models for microarray data (limma) method to illustrate differential expression analysis. When applying to proteomics data, limma fits linear models on the data alo...
Article
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Metamorphic provinces such as the ∼1 Ga Grenvillian, ∼400 Ma Caledonide and Triassic Qinling Provinces often contain rocks with high-pressure assemblages such as eclogites, which formed at mantle depths in subduction zones. These are evidence of the accretion of terranes by subduction of oceans and collision to form large tectonostratigraphic provi...
Article
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The Teschenite Association Rocks (TAR) in the Outer Western Carpathian (OWC) flysch form a classic suite of alkaline intrusions where teschenite and picrite were first defined. They represent continental intraplate volcanism that produced a wide range of melano- to mesocratic rocks emplaced during the Early Cretaceous rifting within the southern ma...
Poster
Full-text available
Determining timescales, rates and duration of metamorphic processes together with the pressure – temperature (P–T) evolution of metamorphic rocks is a prerequisite for deciphering the geodynamic evolution of mountain belts. We present here a complete study from the Lévézou massif (French Massif Central), based on the investigation of mafic and gran...
Article
The widespread glaciomarine record of the Hirnantian (end-Ordovician) glaciation is con-fined to peri-Gondwanan terranes in Variscan Europe and, hence, is of little use for assessing the equatorward range of icebergs that calved from the North Gondwana ice sheet into the Rheic Ocean. New sedimentological investigations aided by laser ablation–induc...
Article
Isotopic dating of monazite and garnet from high-pressure metamorphic rocks exposed in the northern part of the Saxothuringian paleo-suture in the Bohemian Massif revealed a diachronous metamorphism of various rock types that are now closely associated within allochthonous units representing the Devonian–Carboniferous subduction–accretionary comple...
Article
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The aim of the article was to verify the hypothesis concerning the diversification of plutonium sources in the natural environment of Antarctica. Plutonium activity and atom ratios were analyzed in two groups of biological samples: terrestrial and marine. Both isotopic ratios in the terrestrial set were consistent with global radioactive fallout ra...
Conference Paper
Full-text available
Precise and accurate investigation of geochronometers in the light of a detailed petrologi-cal context is the best way to fully understand the evolution of metamorphic rocks. Eclogite-facies rocks highlight the early stages of orogenesis; constraining their P-T-t evolution is then of paramount importance to any geodynamic interpretation. An eclogit...
Conference Paper
Full-text available
To unravel the evolution of metamorphic rocks, the understanding of the mineral growth through time is required. However, dating early metamorphic stages is a challenge, due to subsequent retrograde overprinting. This is particularly true for HP metamorphism that highlights the early stages of orogenesis. A perfectly fresh eclogite and a former ecl...
Poster
Full-text available
Understanding and constraining the time dimension of the history of a rock - absolute ages, timescales, rates or durations - is one of the major challenges in Earth Sciences. In eclogite-facies rocks, the time dimension helps to better understand the early stages of the building of orogens and is therefore of paramount importance. An eclogite samp...
Article
Accurate dating of eclogite-facies metamorphism is of paramount importance in order to understand the tectonic evolution of an orogen. An eclogite sample from the Najac Massif (French Massif Central, Variscan belt) displays a zircon-bearing garnet-omphacite-amphibole-rutile-quartz peak assemblage. Pseudosection modeling suggests peak pressure condi...
Article
Lu-Hf and Sm-Nd garnet-whole rock geochronology combined with petrographic observations, minero-chemical variations, thermodynamic modelling and structural data was used to constrain the P–T–t–d evolution of eclogites from the Mariánské Lázně Complex (Bohemian Massif). Boudins of mostly isotropic eclogite with relict steep eclogite-facies fabric ar...
Article
Garnet and zircon geochronology combined with trace element partitioning and petrological studies provide tight constraints on evolution of the UHT-(U)HP terrain of the Orlica-Śnieżnik Dome (OSD) in the NE Bohemian massif. Lu-Hf dating of peritectic garnet from two mesocratic granulites constrained the time of its initial growth at 346.9 ± 1.2 and...
Conference Paper
In the absence of other indicators, the link between the growth of a specific zircon crystal (or part of it) and the eclogite-facies part of the P–T evolution of a rock is commonly validated using the analysis of its REE signature (e.g. Rubatto, 2002). The absence of an Eu anomaly and a flat HREE pattern are considered to reflect a growth in a plag...
Article
Although the polar regions have not been industrialised, numerous contaminants originating from human activity are detectable in the Arctic environment. This study reports evidence of ²⁴⁰Pu/²³⁹Pu atomic ratios in the tundra and initial soils from different parts of west and central Spitsbergen and recognizes possible environmental inputs of non-glo...
Article
A study is conducted to supplement the uppermost Lower Jurassic–lowermost Cretaceous marine strontium isotope dataset and to present new statistical fits of the Middle–Late Jurassic seawater strontium isotope curve based on a numerical time scale and a detailed biostratigraphical zonal scheme. The use of the stratigraphical scheme allows reduction...
Article
The Main Central Thrust (MCT) is a prominent continental-scale fault within the Himalaya. Its definition has been the topic of some debate in the literature. After a brief consideration of the state of discussion to clarify the definition we use in this work, we report features from the field- to the microstructural- scale of a particularly well-ex...
Article
One of the enduring debates in the study of the Himalayan orogen (and continental collision zones in general) is whether the salient observed features are explained (a) by localized deformation along discrete, narrow fault zones/ductile shear zones separating individual blocks or slices (e.g. critical taper or wedge tectonic models), or (b) by dist...
Article
The late Carboniferous accretionary system of the South Tianshan orogen (North-Western China) underwent complex structural and polymetamorphic evolution. Combined petrological, geochronological and microstructural analysis of (ultra)high-pressure (UHP) metabasites (eclogites and blueschists) enclosed in metapelites show a relict coarse-grained eclo...
Article
This paper reports evidence of Pu isotopes in the lower part of the troposphere of Central Europe. The data were obtained based on atmospheric aerosol fraction samples collected from four places in three countries (participating in the informal European network known as the Ring of Five (Ro5)) forming a cell with a surface area of about 200,000 km2...
Article
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Late orogenic andesites and basaltic andesites in the Pieniny Klippen Belt (PKB) in the Western Carpathians display atypical isotope systematics, strongly departing from those observed among other Neogene–Quaternary calc-alkaline rocks in the Carpathian–Pannonian region. Low εNd values (− 10.6 to − 5.2) and low εHf values (− 19.6 to − 5.2) are acco...
Article
The lesser and greater Himalayan sequences (LH and GH) in Sikkim have been studied in detail recently. The LH consists mainly of pelitic lithologies with detrital zircon ages >1800 Ma and εNd(0) of -27.7 to -23.4 (with intercalated calcsilicates, metabasites and a sheared granite gneiss - the Lingtse gneiss). The metamorphic sequence is characteriz...
Article
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The paper summarizes results of investigation of the current state of radioactive contamination on site being under consideration for planned nuclear power plant in northern Poland. Thanks to use of sequential procedure it was possible to determine activity concentrations for radioisotopes of nine elements, both natural and artificial. Results show...
Article
Voluminous felsic volcanic magmas were formed in Central Europe at the Carboniferous/Permian boundary in numerous pull-apart basins; one of which is the Saale Basin, which holds the Halle Volcanic Complex (HVC), the focus of this study. The rhyolites in the HVC formed laccoliths and scarce lavas, and occur in two different textural types: fine and...
Article
Apatite is a key mineral whose Sr-isotope record has a wide range of applications including palaeofluid flow studies from inorganic apatite, and past faunal/human mobility or palaeoecology using bioapatite. The incremental growth of mammalian enamel bioapatite potentially allows extraction of Sr isotopic compositions at sub-annual time-resolution u...
Article
We investigated Lu-Hf isotopic systematics in garnets from gradually higher grade metamorphic rocks from the first appearance of garnet at c. 500 °C to biotite dehydration melting at c. 800 °C in the Sikkim Himalaya, India. Exceptionally precise Lu-Hf ages obtained for the Barrovian metasedimentary sequence in the Lesser Himalaya (LH) correspond to...
Article
Strontium isotope compositions of ancient sulphate deposits not only provide chemostratigraphic information but also offer insight into the system in which the evaporites precipitated. Primary gypsum from two Middle Miocene (Badenian) sections in southern Poland shows steadily higher 87Sr/86Sr ratios than those expected from a marine-derived format...
Conference Paper
Full-text available
The aim of this work was to establish mass spectrometry protocols for routine Te isotopic composition determination by a Multicollector-Inductively Coupled Plasma Mass Spectrometer (Thermo Finnigan NEPTUNE). We prepared tellurium standard solution from a TeO powder produced by Johnson and Matthey Chemicals, USA. Concentrated Te solution was prepare...
Article
Full-text available
A section of the orogenic middle crust (Orlica-Śnieżnik Dome, Polish/Czech Central Sudetes) was examined to constrain the duration and significance of deformation (D) and intertectonic (I) phases. In the studied metasedimentary synform, three deformation events produced an initial subhorizontal foliation S1 (D1), a subsequent subvertical foliation...
Article
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The paper presents the results of our study on Pu-238, Pu-239, Pu-240, Am-241 and Sr-90 concentration in human bones carried out on a set of 88 individual samples of central Europe origin. Bone tissue samples were retrieved under surgery while introducing hip joint implants. The conducted surgeries tend to cover either southern or northeastern part...
Article
Ion microprobe analyses of garnet porphyroblasts from three separate splays of the mid-crustal Walter-Outalpa shear zone, Curnamona Province, South Australia, indicate homogeneous δ18O values of <3‰. Integrated Lu-Hf geochronology and electron microprobe compositional mapping demonstrate that closed-system growth of these isotopically light garnets...
Article
full text at: http://www.tandfonline.com/eprint/W23jwWzWDetXDzdYY3cJ/full Although small in number, apatite crystals found in the December 2007 pocket in the Karo pit, Block D, Merelani Hills, Tanzania (see accompanying article by Jaszczak and Trinchillo 2013) exhibit noteworthy paragenesis, inclusions, and extraordinary optical properties. These...
Article
Although small in number, apatite crystals found in the December 2007 pocket in the Karo pit, Block D, Merelani Hills, Tanzania (see accompanying article by Jaszczak and Trinchillo 2013) exhibit noteworthy paragenesis, inclusions, and extraordinary optical properties. These features along with recent analytical data are described herein.
Article
Strontium isotope ratios of well-preserved belemnite rostra and ammonite shells are presented from stratigraphically well-dated Upper Bajocian–Callovian sediments of the Polish Jura Chain in central Poland. Nekto-benthic belemnites show a narrow trend of changes of 87Sr/86Sr ratio that are interpreted to record secular variations in the strontium i...
Article
High-grade migmatitic and mylonitic gneisses from the Day Nui Con Voi massif in northern Vietnam record temperatures of 760–810 °C at pressures of 6–10 kbars. High temperature conditions have resulted in the development of major element diffusional profiles in garnet. Laser ablation ICP-MS analyses of trace elements indicate that REE and Hf closely...
Article
Full-text available
Lu–Hf and Sm–Nd garnet geochronology combined with geothermobarometric calculations allowed us to gain new insight into the metamorphic evolution of the Northern Nagssugtoqidian orogen (NNO), in West Greenland. Three samples were collected from the southern (SM 310 and SM 316) and northern (SM 339) parts of the NNO. They revealed amphibolite-grade...
Article
Mesozoic subduction along the western margin of North America in California jumped west in mid-Jurassic time to form the Franciscan accretionary wedge outboard of the Coast Range Ophiolite and the Great Valley forearc basin. Based on Mesozoic plate motion analysis for the Pacific region, overall rates of subduction are likely to have been on the or...
Article
The EAGLE array (European Array for Gamma Levels Evaluations) has been designed as a multi-configuration detector set-up for in-beam nuclear spectroscopy studies at the Heavy Ion Laboratory of the University of Warsaw. The array can accommodate a maximum of 30 Compton suppressed Ge detectors coupled to various ancillary devices, such as a 4π inner...
Article
Full-text available
We present evidence that the 1674 Ma Boras Mafic Intrusion of the Swedish Eastern Segment experienced high-pressure metamorphism related to a Sveconorwegian subduction-exhumation cycle. Mg-rich staurolite is found as inclusions in garnet in metaluminous amphibolites. The inclusion assemblages include staurolite (X(Mg) 0.34-0.40), kyanite, euhedral...
Article
Low-angle detachment faults are common features in areas of large-scale continental extension and are typically associated with metamorphic core complexes, where they separate upper plate brittle extension from lower plate ductile stretching and metamorphism. In many core complexes, the footwall rocks have been exhumed from middle to lower crustal...
Article
The Glenelg-Anadale Inlier is the largest basement inlier within the Caledonian orogen in NW Scotland. A Western Unit consists of trondhjemite-tonalite-granodiorite (TTG) gneisses and subordinate mafic intrusions with locally preserved mafic high-pressure granulite and eclogite assemblages. An Eastern Unit comprises TTG gneisses, Grenville-age (c....
Article
Full-text available
Strontium isotope compositions have been measured in six primary gypsum samples from the most marginal part of the Badenian evaporite succession in the Ukrainian Carpathian Foredeep Basin (Mamalyha quarry section) and in two anhydrite samples from the basin-centre halite zone of the Ukrainian Carpathian Foredeep, aimed determining the origin of bri...
Article
Two distinct formation ages of eclogitic rocks in the Sanbagawa belt have been proposed: (i) c. 120-110 Ma based on a zircon SHRIMP age for the Western Iratsu unit, and (ii) c. 88-89 Ma based on a garnet-omphacite Lu-Hf isochron age from the Seba and Kotsu eclogite units. Despite the contrasting age estimates, petrological studies suggest the forma...
Article
Two distinct age estimates for eclogite-facies metamorphism in the Sanbagawa belt have been proposed: (i) c. 120–110 Ma based on a zircon SHRIMP age for the Western Iratsu unit and (ii) c. 88–89 Ma based on a garnet–omphacite Lu–Hf isochron age from the Seba and Kotsu eclogite units. Despite the contrasting estimates of formation ages, petrological...