Klaus P. Stanek

Technische Universität Bergakademie Freiberg · Institute of Geology

Samples and documentation of outcrops and drillings, facies analysis, whole rock geochemistry and radiometric ages have been employed to re-evaluate the Late Carboniferous Tharandt Forest caldera (TFC) and the co-genetic Niederbobritzsch granite (NBG) in the eastern Erzgebirge near Dresden, Germany. The c. 52 km ² TFC harbours strongly welded ignim...

The Elbe Fault Zone is a continental scale NW striking structure that contains faults of different kinematics. Some faults were active at different times since at least the Variscan orogenesis in the Late Carboniferous. The Lusatian Fault (LF) was one of the major structures of the Elbe Fault Zone in the Late Cretaceous, when NW striking faults of...

The Escambray Massif of Central Cuba is the largest metamorphic complex exposed in the Greater Antilles of the northern Caribbean area. It can be viewed as an extraordinarily rich archive, documenting (1) processes accompanying early rifting between North and South America, (2) the subsequent eastward passage of the intra-oceanic subduction-zone an...

The Altenberg–Teplice Volcanic Complex (ATVC) exposed on both sides of the German–Czech border in the Erzgebirge/Krušné hory Mts. is one of the earliest late-Variscan to post-Variscan volcanic centres in Europe. The ATVC features an early volcanosedimentary succession preserved in the Schönfeld–Altenberg Depression Complex (SADC), covered by volumi...

Multimethod geochronology (U-Pb zircon; ⁴⁰Ar/³⁹Ar hornblende, biotite, feldspar, apatite fission track) on granitoids, gneisses, and Cenozoic intramontane basin clastics of the Gissar-Alai ranges, South Tian Shan collisional belt, west of the Talas-Fergana fault, elucidates a history of Neoproterozoic magmatism, late Paleozoic magmatism and metamor...

The Minerogenic Map of Tanzania summarises the available knowledge about the geological and tectonic structure and the mineral wealth of the country. While the printed map is a static product its data content is a part of the Tanzanian Geological and Mineral Information System (GMIS) being frequently upgraded as new information becomes available. T...

The management of natural resources has to follow the principles of sustainable development. Therefore, before starting new mining activities, it should be checked, whether existing deposits have been completely exploited. In this study, a three-dimensional (3D) cross-border geologic model was created to generalize the existing data of the Neogene...

This study utilizes zircon SIMS U–Pb dating, REE and trace-element analysis as well as oxygen isotope ratios of zircon to distinguish jadeite-rich rocks that formed by direct crystallization from a hydrous fluid from those that represent products of a metasomatic replacement process. Zircon was separated from a concordant jadeitite layer and its bl...

As one of its efforts to scale up promotional programs for attracting investments in the development and utilization of Tanzania’s mineral resources, the Geological Survey of Tanzania has made major review of the previously existing Mineral Occurrence Map of Tanzania through verification of location of known occurrences of minerals coupled with tho...

The accuracy of three-dimensional (3D) models depends on their data density and quality. Regions with a complex geology can be a challenge to model, especially if detailed models are required to support a further economic exploitation of a region. In this research, a 3D model was created based on the region's complicated geological condition. The f...

This work applies recent advances in tectonic geomorphology in order to understand the geomorphic evolution of the Jamaican restraining bend located along the Caribbean-Gonâve-North American plate boundary. We propose a classification of landscapes according to their erosional stages. The approach is mainly based on the combination of two DEM-based...

The NW–SE trending Late Paleozoic Freiberg-Frauenstein rhyolite dike (FFR) intruded during postcollisional extensional movements after the Variscan orogeny in the eastern Erzgebirge. The dike has a maximum thickness of 30 m and can be traced over 23 km. Oriented samples from the mines Reiche Zeche and David-Richtschacht, and from an abandoned quarr...

Tectonics modify the base-level of rivers and result in the progressive erosion of landscapes. We propose here a new method to classify landscapes according to their erosional stages. This method is based on the combination of two DEM-based geomorphic indices: the hypsometric integral, which highlights elevated surfaces, and surface roughness, whic...

Based on detailed measuring of cores, the Permocarboniferous section of the borehole Urach 3 is preliminary subdivided into 8 formal lithostratigraphical units (A to H). The decision whether these units are to be formal formations or members has to be postponed till further investigations are concluded. Isotope dating (U-Pb) of a tuff layer in unit...

Cenozoic gneiss domes—exposing middle–lower crustal rocks—cover ~30% of the surface exposure of the Pamir, western India–Asia collision zone; they allow an unparalleled view into the deep crust of the Asian plate. We use titanite, monazite, and zircon U/Th–Pb, mica Rb–Sr and 40Ar/39Ar, zircon and apatite fission track, and zircon (U-Th)/He ages to...

[1] Cenozoic gneiss domes comprise one third of the surface exposure of the Pamir and provide a window into the deep crustal processes of the India-Asia collision. The largest of these are the doubly vergent, composite Shakhdara-Alichur domes of the southwestern Pamir, Tajikistan, and Afghanistan; they are separated by a low-strain horst. Top-to-SS...

Nine SHRIMP U/Pb ages on zircon and two Pb/Pb single zircon ages have b eendetermined from Late Paleozoic volcanic rocks from Saxony and northern Bohemia. Samples came from the Teplice-Altenberg Volcanic Complex, the Meissen Volcanic Complex, the Chemnitz Basin, the Do¨hlen Basin, the Brandov-Olbernhau Basin, and the North Saxon Volcanic Complex. T...

Samples of rocks reported in the literature to be jadeite jade from the subduction-zone complex of the Escambray Massif in central Cuba have been studied by optical and transmission electron microscopy, electron microprobe and hot-cathode cathodoluminescence (CL) microscopy. Although these rocks are indeed rich in jadeite, the bulk rock composition...

New occurrences of jadeitite and jadeite-rich rocks have been discovered in the Rio San Juan Complex (RSJC) of the northern Dominican Republic in serpentinite melanges associated with a former intra-oceanic subduction zone. Allochthonous blocks in lag deposits developed on the melange outcrops or boulders in river beds are common. A very unusual fe...

We integrate known and suspected Meso-American plate motions with the geochronology of Caribbean arcs and Central American HP/LT belts to promote two primary concepts. The first is that the Greater Antillean Arc formed at about 135 Ma by inception of SW-dipping subduction along a sinistral ‘inter-American transform’ connecting the west-facing subdu...

In this paper we reassess the geochronology and geochemistry of three dredge hauls from the SE corner of the Aves Ridge (Caribbean Sea) originally sampled in 1968 by Duke University's R.V. Eastward . Two hauls consist of light rare earth element-enriched granitoids with a U–Pb zircon emplacement age of 75.9 ± 0.7 Ma. A further haul contains mostly...

In drei Gebieten Sachsens wurde durch einen Forschungsverbund unter Leitung des LfULG die Nutzung der petrothermalen Geothermie zur Strom- und Wärmegewinnung untersucht. In der Elbezone im Raum Dresden, in Freiberg und Aue-Schneeberg wurden geologische, petrophysikalische und thermische Daten aufgearbeitet und dreidimensionale Modelle bewertet. Di...

Der Freistaat Sachsen führt seit 2008 Arbeiten auf dem Gebiet der petrothermalen Tiefengeothermie durch. Die Arbeiten konzentrierten sich auf drei unterschiedlich geologisch strukturierte Vorzugsgebiete im Raum Aue, im Raum Freiberg und in der Elbezone. Die Ergebnisse bilden einen wesentlichen Baustein zur Entscheidungsfindung, welches der Vorzugsg...

New structural, geochronological, and petrological data highlight which crustal sections of the North American-Caribbean Plate boundary in Guatemala and Honduras accommodated the large-scale sinistral offset. We develop the chronological and kinematic framework for these interactions and test for Palaeozoic to Recent geological correlations among t...

Within the last decade, modern petrological and geochronological methods in combination with detailed studies of the field geology have allowed the reconstruction of tectonic processes in the northwestern part of the Caribbean Plate. The development of an oceanic Proto-Yucatan Basin can be traced from the Late Jurassic to the Mid-Cretaceous. From t...

The metamorphic rock sequences exposed on the Island of Margarita, Venezuela, located in the southeastern corner of the Caribbean Plate margin, are composed of a highpressure/low-temperature (HP/LT) nucleus subducted to at least 50 km depth, now structurally overlain by lower-grade greenschist-facies units lacking any sign of high-pressure subducti...

Earthquake swarms occur mostly in regions with CO2-enriched pore fluids. It is generally accepted that both geodynamic stress accumulation and critical pore fluid pressures act as a triggering mechanism for most seismic events. The new thesis presented here is that hydrothermal alteration processes in fault zones help facilitate the shear failure p...

La zona costera de Yamanigüey-Baracoa se caracteriza por una alta complejidad geólogo-tectónica que se refleja en la activa sismicidad, en los rasgos geomorfológicos y en los movimientos neotectónicos recientes. La presente investigación está basada en la aplicación de métodos geomorfológicos y fotointerpretación, que incluye el análisis de perfile...

The thrusting of the Cuban Oriente block onto the Bahamas platform and the transform movement between the Caribbean and North American plate cause oscillating uplift in the east of Cuba, manifesting itself in tilted blocks, coral reef terraces and rivers cutting deep into the bedrock. Objectives of this work are to identify active tectonic boundari...

Deerite, a typical mineral ofFe-rich metacherts metamorphosed under blueschist conditions, is not rare, but known occurrences have up to now been restricted mainly to the Tethyan collisional zone and the Western Cordillera ofNorth America. We describe a first occurrence in the high-pressure nappes ofthe Escambray Massif, Cuba, in the assemblage dee...

Zur geothermischen Energieerzeugung hat das das "Büro für Technikfolgen-Abschätzung beim Deutschen Bundestag" (TAB) im Jahre 2003 einen Sachstandsbericht verfasst (PASCHEN et al. 2003), aus dem hervor geht, dass "unser gegenwärtiges Energiesystem mit seiner starken Abhängigkeit von erschöpflichen Energieträgern … nicht nachhaltig [ist]. Daher gehör...

The Sancti Spiritus Dome of the eastern Escambray (Cuba) represents a metamorphic fold and thrust structure which was part of the Cretaceous subduction-accretion complex of the Greater Antillean Arc. On the basis of structural data and pressure-temperature-time evolution the metamorphic complex can be subdivided into four units interpretable as nap...

Eight points of recurring controversy regarding the primary foundations of models of Gulf of Mexico and Caribbean tectonic evolution are identified and examined. The eight points are controversial mainly because of the disconnect between different scales of thinking by different workers, a common but unfortunate problem in the geological profession...

The American margins of the Caribbean comprise basins and accreted terranes recording a polyphase tectonic history. Plate kinematic models and reconstructions back to the Jurassic show that Mesozoic separation of the Americas produced passive margins that were overridden diachronously from west to east by allochthonous Caribbean plate–related arc a...

Magmatic rocks and depositional setting of associated volcaniclastic strata along a north-south traverse spanning the southern Tien Shan and eastern Pamirs of Kyrgyzstan and Tajikistan constrain the tectonics of the Pamirs and Tibet. The northern Pamirs and northwestern Tibet contain the north facing Kunlun suture, the south facing Jinsha suture, a...

The evolution of magmatic rocks along a north-south traverse across the southernmost Tien Shan and eastern Pamirs is characterized by U/Pb and Pb/Pb zircon, Rb/Sr and Ar/Ar mica and hornblende geochronology and geochemistry. In the southernmost Tien Shan, Early Permian granitoids correspond to calc-alkaline complexes of mature arc stages. The north...

We present new and critical isotopic data for late- to postkinematic granitoid intrusions and their epidote-amphibolite-facies country rocks (Mabujina unit) in central Cuba. The Mabujina unit tectonically overlies a nappe sequence of high-pressure (HP) metamorphic rocks in the Escambray Massif. These granitoid rocks have a variable granodioritic to...

In the Jurassic Latady Formation, northeast of Matthews Glacier, some ammonite fragments were found in shales. The ammonites Kepplerites sp. indet. and Macrocephalites sp. indet. suggest a middle Jurassic age (Lower and Middle Callovian) of this part of Latady Formation. from Current Antarctic Literature

Erscheint in 2 Bd. Freiberg (Sachsen), Bergakad., Diss. A, 1985 (Nicht f.d. Austausch).