Saar Basin Research Articles

Coalification pattern and thermal modelling of the Permo-Carboniferous Saar Basin (SW-Germany)

Palaeo-heat flow values and thicknesses of eroded Permo-Carboniferous sediments in the Saar Basin were evaluated using one dimensional thermal modelling techniques. Thermal, burial and erosion histories for 16 wells were calibrated by comparing measured and calculated vitrinite reflectance using the kinetic EASY% R o algorithm and by comparing measured and calculated temperature data. On the basis of 37 wells, coalification maps were constructed revealing a syn-kinematic coalification pattern. Thermal maturity of the sediments can only be explained by deep burial and moderate heat flows during time of maximum burial, i.e., in the Permo-Carboniferous. Calculated heat flow data range between 50 and 75 mW/m 2, which implies a crustal thickness between 30 and 40 km during the time of maximum burial. These values are in accordance with the geodynamic setting of the basin. The influence of the Permo-Carboniferous volcanism on the palaeo-temperature distribution was overwhelmed by the subsequent deep burial. During Permian times, between 1800 and 3000 m of Permo-Carboniferous sediments were eroded. Different sedimentation and erosion histories are characteristic for anticlines and synclines, respectively.

Evidence for precollisional subduction erosion in ancient collisional belts: The case of the Mid-European Variscides

Analysis of the fore-arc remnants and suture-zone rocks in the European Variscides using criteria established for the Circum-Pacific margins (geometry, sedimentary evolution, and style of deformation) shows that precollisonal orogenic evolution can also be reconstructed for ancient collisional belts. The collision zone of the lower-plate thrust belt (Rhenohercynian zone) and the upper-plate arc and fore-arc remnants (Saxothuringian zone and Saar basin) indicate subduction erosion of the upper plate by some 50 km length of upper-plate lithosphere prior to collision. Removal started during early convergence in the Famennian (ca. 365 ma) and lasted until the Late Visean onset of collision (ca. 330 ma). Part of this material may have been underplated below the upper plate and has since resurfaced as high-pressure rocks contributing to the metamorphic core of the orogen.

96/03748 Methane gas production from coal seams in the Saar basin (Germany) with surface drillings

96/03748 Methane gas production from coal seams in the Saar basin (Germany) with surface drillings

Discussion on structural synthesis of south Staffordshire, UK: implications for the Variscan evolution of the Pennine Basin

E. G. Poole writes: The Enville Formation of the English Midlands has long ( Murchison 1839 ) been regarded as Lower Permian in age with conclusive determinations of plants, amphibian and reptile remains specifically comparing with the type Upper Autunian of Germany ( von Heune 1908 ; Haubold & Serjeant 1973; Paton 1974 ), and there is no support for the Westphalian D-Stephanian classification shown in fig. 3. Similarly the underlying Keele Formation contains tetropod tracks (amphibia and reptiles) which compare with those of the type Stephanian B deposits of Thuringia and the USA (Haubold & Serjeant 1973). The underlying Halesowen Formation (and its equivalents elsewhere) contains fossils such as Anthraconauta pruvosti Chernyshev and plants of the highest floral zones H and I ( Dix 1934 ) many of which are accepted as Stephanian forms on the Continent. Although one cannot conclusively prove by fossils that the Halesowen Formation is of Stephanian or Westphalian age ( Weir 1967 , p. 406), it behaves in an identical manner to the basal Stephanian A Holzer Konglomerat of the Saar Basin, Germany, which uncomforably overlaps all the Namurian and Westphalian deposits after a major period of uplift, tectonics and erosion ( Poole 1975 , figs 3 & 4). The underlying Etruria Formation is a primary red-bed facies which may be of any age from Westphalian B in the Dudley area ( Poole 1970 , fig. 1) to highest Westphalian (D?) in the South Lancashiere Coalfield where the primary red Barren Group ( c. 100 m thick) is conformably overlain by the brackish water, grey beds with Spirorbis

Some herbaceous lycopods from the Westphalian D of Germany

This paper deals with compression fossils of two Late Carboniferous herbaceous lycopods. New fertile material of Selaginellites gutbieri (Göppert, 1837) Kidston, 1911 was collected from its type locality Oelsnitz (Westphalian D; Erzgebirge-Basin). The three-dimensionally preserved strobili clearly show micro- and megasporangia. In addition a sterile large-leaved form is described from the Westphalian D of the Saar Basin.

Investigations on the petroleum generation potential of bituminous coals from the Saar region

The Saar basin contains bituminous coals (high volatile A and B). Five coals of Westphalian and Stephanian age with distinctly varying maceral compositions were analysed by Soxhlet extraction and supercritical extraction with different solvents and microscopically. From the data obtained it is concluded that the oldest coals have a potential for oil generation, whereas the younger coals do not. This conclusion is explained by varying liptinite contents and varying adsorption capacities of different vitrinite macerals for bitumen.

The upper Rhenish Shield basement (Vosges, Upper Rhinegraben and Schwarzwald): Main structural features deduced from magnetic, gravimetric and geological data

Interpretation of magnetic and gravimetric data and correlations with geological observations on outcrops and in boreholes have enabled the construction of a geological sketch map of the pre-Westphalian basement in the area of the upper Rhenish shield. The map demonstrates the contrast between the “heavy” and “magnetic” Saxothuringian, characterized by Palaeozoic units metamorphosed to varying degrees and intruded by Early Carboniferous basites, and the “lighter” Moldanubian, consisting mainly of gneisses and granites. Geological structures and tectonic features are recorded beneath the Mesozoic and Cenozoic cover. The present picture of the basement is mainly the result of late Visean-early Namurian structural features represented by a linear arrangement of magmatic bodies and the distribution of strike-slip and thrust faults. The major structural features are the E-W Vittel-Lalaye-Lubine- Baden-Baden fault that marks the border between Saxothuringian and Moldanubian, the N35° left-lateral wrench-fault system running along the present Rhinegraben, the N60° grain of the northern Vosges and the Saar basin, and the S-verging crustal thrusts of Moldanubian.

Sphenophyllum miravallis Vetter and Bowmanites cupulatus sp.n. from the “Illinger Flözzone” (“Heusweiler Schichten”, Lower Stephanian, Saar Basin, German Federal Republic)

This paper deals with a detailed study of Sphenophyllum miravallis Vetter, a member of the “ Sphenophyllum thonii group”. New material from the Reisbach colliery, working the “Illinger Flözzone” of the “Heusweiler Schichten” (Lower Stephanian, Saar Basin, German Federal Republic), is described morphologically and anatomically, and the species is discussed. The new material enlarges the known range of variability of the normal aspect of the foliage, i.e. the foliage of the thinner branches. Thicker stems with their aberrant polymorphous foliage, and cellular details, are described for the first time. An emended diagnosis is given. Comparisons with other species are made. The new species Bowmanites cupulatus is introduced to accommodate fructufications most probably belonging to Sphenophyllum miravallis. S. crenulatum Knight ex Wagner is considered to be a heterotypic synonym of S. miravallis, the latter name having priority.

The Sphenophyllum species in the carboniferous flora of Holz (Westphalian D, Saar Basin, Germany)

The present work deals with a detailed morphological study of Sphenophyllum zwickaviense Storch, S. saxonicum Remy et Remy, and S. emarginatum Brongniart) Brongniart, with emphasis on the latter. The material comes from an outcrop of latest Westphalian D age in the Saar Basin. The species are critically dealt with; including synonymy, references, type material, diagnosis, description of the present material, discussion, and comparisons. A selection of the specimens is figured. S. zwickaviense is recorded for the first time from the Saar Basin. Emendation of the diagnosis appeared to be necessary. The occurrence of S. saxonicum in the Saar Basin is confirmed. It is suggested that the species migh be heterophyllous. The name S. verticillatum (Von Schlotheim) Zeiller is shown to be invalid, and should be rejected in favour of S. marsiliaefolium (Von Sternberg) comb.nov. For the first time fragments attributable to S. cornutum Lesquereux are recorded from outside the U.S.A. The fragments were found in organic connection with fragments of S. emarginatum. Therefore, S. cornutum is considered a heterotypic synonym of S. emarginatum, the latter having priority. Sphenophyllum sp.n? Storch 1966 is considered to belong to S. emarginatum. The present material increases our knowledge of the vegetative parts of S. emarginatum. Therefore, and for the data mentioned above, the diagnosis had to be emended. Theorems on the generic level are presented.

Great Britain and the Saar Plebiscite of 13 January 1935

The Saar Basin, 730 square miles with a population in excess of 800,000, was uniformly German in race, speech, traditions and culture. The traces of French civilization imposed on the area during the Great Revolution at the end of the eighteenth century had all but disappeared before the advent of the first world war. Yet the French Government, determined on compensation for the heavy losses during the fighting, eyed the region keenly as the source of coal for the iron industry of Lorraine now that the French mines in the north of the

Tektonik und Ausgasung im Saarbecken

Tektonik und Ausgasung im Saarbecken

Sporological study of the coals from Falkenberg (Faulouemont) colliery, Lothringen (Lorrain), France

Fossil spores and pollen grains from the coals of Falkenberg colliery have been studied in detail. This study has been utilised to corroborate the correlation of the coal seams in the two sections of the colliery which lies in the Lothringen area of Lothringen-Saar-Pfalz basin. The spores recovered from these coals have been assigned here to 52 spore genera and 157 spore species out of which 49 species, which have been newly proposed, are described in detail. In addition to this, 1 genus and 3 species have been emended and the emended diagnoses given.
 The distribution of the dispersed spores in the different scam, has been given and it has been concluded that miofloristically coal seams 1-4 of Southfield agree with coal seams 1-4 of Northfield, thus substantiating the correlation in vogue miofloristically. The spore assemblage of the succession but for coal seam 1, corresponds to division II of Bhardwaj 1955, correlated as Westphalian D in age. Seam 1 probably represents the initiation of Stephanian. The absence of Lycospora in this seam along with certain components is fairly suggestive.
 In the final part of the discussion the flora of the Falkenberg coals has been compared with the spore flora of the Saar basin.

In re Incampe

341Extradition — From Canada to Saar Basin — Application by France under Extradition Treaty with Great Britain.

BERLIN

<h3>The Physicians and the Health Insurance Societies</h3> At the last meeting of the federal committee for the adjustment of controversies between the physicians and the health insurance societies, the following question came up for discussion: Is it in accordance with the present regulations of the federal committee for health insurance societies independently of the admission board to engage physicians to serve in ambulatory clinics? The question was decided in the negative. The import of this decision is that the physicians engaged for the ambulatory clinics in Berlin are serving contrary to the existing legal regulations. <h3>The Number of General Hospitals in Prussia</h3> The number of general hospitals in Prussia, exclusive of the Saar Basin, was 2,239 in 1922 as compared with 2,218 in 1921. Of these, 1,834 were public institutions, and forty-three were university clinics. The remaining 405 were private institutions with more than ten beds. The total bed capacity

The Saar Basin Governing Commission

The Saar Basin Governing Commission

Directions for the Governing Commission of the Territory of the Saar Basin

Directions for the Governing Commission of the Territory of the Saar Basin