Wyniki wyszukiwania - BazTech

1

Sedimentary facies, ichnofossils and storm deposits in the Lower Permian Taiyuan Formation, Jiaozuo city, Henan Province, central China

Hu B., Song H., Liu S., Zhang L.

Acta Geologica Polonica

|

2010

|

Vol. 60, no. 1

45-52

EN

Five sedimentary facies - neritic carbonate platform, lagoon, tidal flat, swamp and barrier island facies - are recorded in the Lower Permian Taiyuan Formation along with abundant ichnofossils. Common ichnofossils in this formation include Zoophycos villae, Zoophycos brianteus, Nereites cf. missouriensis, Chondrites isp., Gordia marina, Taenidium isp., Thalassinoides isp., Palaeophycus isp., Planolites isp. and a kind of bifurcation trail. From observations of the morphology of Zoophycos spreiten in approximately vertical sections, at least three kinds of spreite laminae are distinguished: ligular, crescentic and rectangular forms. Four types of storm deposits (coded as A, B, C, D) are recognised in the carbonates of the Taiyuan Formation and can be explained forming in shallow marine environments, which are distributed in order from near storm wave base to near fair weather wave base respectively.

2

Tlenki manganu z diabazów Niedźwiedziej Góry koło Krakowa

Muszyński M., Rzepa G., Skowroński A.

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

|

2009

|

T. 35, z. 2

135-151

PL

Czarne tlenki manganu z polimineralnych żył napotkanych w 1998 r. w tzw. diabazach z Niedźwiedziej Góry koło Krakowa zidentyfikowano (XRD, IR, DTA-TG, SEM/EDS, EPMA/WDS) jako człony pośrednie szeregu rancieit-takanelit. W porównaniu z opisanymi w literaturze minerałami tego szeregu charakteryzują się podwyższonymi koncentracjami żelaza i baru oraz stosunkowo niewielkimi udziałami wapnia. W przypuszczalnej sukcesji składników powyższych żył tlenki te zajmują przedostatnią pozycję: goethyt +/- saponit - tensja - baryt, kwarc pręcikowo-igłowy - ługowanie - tlenki Mn, kwarc słupkowy. Wykrystalizowały prawdopodobnie z wód descenzyjnych związanych z powierzchniowym wietrzeniem diabazów, które miało miejsce po zerodowaniu nadległych skał karbonu. Głównym źródłem manganu były zapewne wietrzejące diabazy.

EN

Black manganese oxides from the polymineral veins found in 1998 in the so-called diabases of Niedźwiedzia Góra near Kraków have been identified (XRD, IR, DTA-TG, SEM/EDS, EPMA/WDS) as intermediate members of the rancieite-takanelite series. In comparison with the minerals of this series described in the literature, they reveal elevated contents of iron and barium and relatively low contents of calcium. In the probable succession of components of the veins mentioned, the Mn oxides occupy the before last position: goethite +/- saponite - tension - barite, thin prismatic-acicular quartz - leaching - Mn oxides, prismatic quartz. They must have crystallized from descensive waters associated with surface weathering of the diabases, which took place when overlaying Carboniferous rocks had been eroded. The weathering diabases were a probable source of manganese.

3

Ctenacanthiform Cladodont Teeth from the Lower PermianWichita Group, Texas, U.S.A.

Johnson G.

Acta Geologica Polonica

|

2008

|

Vol. 58, no. 2

205-209

EN

Isolated teeth of Glikmanius occidentalis occur in ten vertebrate faunas in the Waggoner Ranch Formation and in one fauna in the underlying Petrolia Formation. They range in size (anteromedial-posterolateral base length) from 1.28 mm to 10.15 mm (n = 12). In addition to the typical teeth, one with an asymmetrical base and one possible posterior tooth (both G. ?occidentalis), and a questionable symphyseal tooth (Glikmanius?), occur in the collection.

4

Ewolucja przestrzeni porowej w piaskowcach górnego karbonu i dolnego permu Pomorza Zachodniego

Kuberska M., Kozłowska A., Maliszewska A., Buniak A.

Przegląd Geologiczny

|

2007

|

Vol. 55, nr 10

853-860

EN

The paper presents results of detailed research of pore space in the Upper Carboniferous and Lower Permian sandstones and those from the Upper Carboniferous/Lower Permian transitional section. This is followed by a preliminary assessment of reservoir properties against the background of diagenetic processes. The samples were collected from 11 boreholes. The research included standard petrological investigations supported by a digital image analysis of thin sections. Compaction and cementation were the main processes reducing porosity in all the sandstones. Cementation locally reduced primary porosity to approximately 80%. Compaction was much less active. The sandstones are characterized by primary and secondary porosity. Secondary intergranular as well as intercrystalline and intracrystalline porosity developed as a result of diagenetic dissolution of feldspar grains and cements. Variability of petrophysical parameters can be a result, among others, of lithological and facies development. Upper Carboniferous and Upper Carboniferous/Lower Permian sandstones show the best reservoir properties. Lower Permian sandstones are characterized by variable properties.

5

Litologia i stratygrafia klastycznych utworów karbonu i dolnego permu w profilu otworu Tarnawa 1

Buła Z.

Prace Państwowego Instytutu Geologicznego

|

2001

|

T. 174

61--66

PL

W wyniku przeprowadzonych badań litologicznych i stratygraficznych zweryfikowano pozycję stratygraficzną i genezę skał klastycznych rozpoznanych w otworze Tarnawa 1 na głębokości 4214,0–4623,0 m, a uznawanych dotychczas za karbońskie (Baran i in., 1997). Na podstawie tych badań do permu dolnego zaliczono osady klastyczne, pochodzenia lądowego, stwierdzone w tym otworze na głębokości 4214,0–4364,0 m, a do karbonu (dolnego namuru A ?i górnego wizenu) klastyczne osady morsko- lądowe występujące tu na głębokości 4364,0–4623,5 m (fig. 1). Ponadto w wyniku tych badań oraz reinterpretacji danych geofizyki otworowej wykluczono, sugerowaną wcześniej w interwale 4315,0– 4450,0 m (Baran i in., 1997), obecność pokładów węgla o miąższościach rzędu dwu metrów.

EN

Clastic rocks encountered in the Tarnawa 1 borehole section at the depth of 4315.0-4630.0 m were assigned by Baran et al. (1997) to the Carboniferous, basing on their lithological features and data from wireline logs which indicated the presence of several coal beds, about 2 m - thick each, at the depth of 4315.0-4450.0 m. Lithological, sedimentological and palynological studies of clastics drilled at the depth of 4214.0-4623.0 m, as well as the reinterpretation of wireline logs, allow to verify their stratigraphic position and to explain the problem of their coal-bearing features. The researches indicate that Lower Permian continental sandy-gravelly-silty deposits occur at the depth of 4214.0-4364.0 m. These are locally accompanied by siltstones containing an increased percentage of carbonized plant fragments (carbonaceous siltstones) and coal shale (Fig. 1). The interpretation of wireline logs show that the Lower Permian deposits contain no coal beds. Lithologically similar sediments found in the Jachówka 1 borehole section near Sucha Beskidzka, SW of Tarnawa, (Krieger, 1997) might represent a stratigraphical equivalent of the Lower Permian deposits from the Tarnawa 1 borehole section. Clay-silty-sandy sediments with thin coal beds, encountered in the Tarnawa I borehole at the depth of 4364.0-4623.5 m, have been assigned to the uppermost Viséan and Namurian A or to the Namurian only. These are marine and continental deposits similar, in terms of their lithology and facies development, to the sediments of the same age occurring in the SE part of the Upper Silesian Coal Basin, and included by Kotas (1972) within the Zalas Beds.

6

Dolnopermski zespół miospor w profilu otworu Tarnawa 1

Dybova-Jachowicz S., Filipiak P.

Prace Państwowego Instytutu Geologicznego

|

2001

|

T. 174

81--86

PL

Bogate spektrum jednoworkowych ziarn pyłku, przeważających nad formami dwuworkowymi, otrzymano z próbki pochodzącej z głębokości 4327,0–4335,0 m. Wiek próbki na podstawie mikroflory określono na dolny perm. Przynależnośc botaniczna całego zespołu wskazuje na dominację roślin szpilkowych.

EN

Palinological research has been carried out on the sample from the depth of 4327.0-4335.0 m. After chemical maceration using first 36% solution of hydrochloric acid and then 45% solution of hydrofluoric acid, the macerat became decanted and sieved using nylon riddle of the diameter of 10μ. Such a condensed macerat was used to prepare standard microscope preparations which were then preserved using Petropoxy glue. This way, microflora associations were protected from drying. The preperations were subjected to microscopic planimetric analysis in a transmitted light. To obtain larger amount of palinological material, chemical maceration was carried out twice. Planimetric palinological analysis revealed the presence of a rich spectrum of the following monosaccatae pollen grains: Florinites luberae, F. grandis, F. minutus, F. pwnicosus, F. mediapudens, Potonieisporites novicus, P. rimosus, P. negleclus, P. grandis, P. permollis, P. lemniscatus, P. concinus, Wilsonites cf. vesicatus, Cordailina uralensis, Plicatipollenitesgondwanensis and Crucisaccites lalistilcatus. Among the bisaccatae pollen grains, the following spe-cics were determined: Gardenasporites pinnatus. Crustaesporites globosus, Vesicaspora potoniei, Pseudopodocarpus expresus and Jugasporites delasaucei. All these examples of microflora clearly indicate Lower Permian age. It significantly differs from the Carboniferous association determined below. The botanical attachment of the microflora studied confirms the domination of the conifers which replaced Carboniferous hygrophilous flora into xerophilous one at the turn of Carboniferous and Permian. The appearance of first bisaccatae pollen grains which predominate in Upper Permian (eg. Jugasporites delasaucei) indicates a permanent trend of dry climate changes into almost semidesertic climate of Upper Permian. The determined association of microflora may be compared with an association known from Lower Permian - Autunian of the Sudetic Mountains and Pre-Sudetic monocline (Dybova-Jachowicz, 1995) and also from Asselian of Donicck Basin, Ukraine (Inosova et al-, 1976). Photographic documentation was made by M. Jachowicz using Olympus BX50 microscope with 750x magnitude.