Study of Ca and Mg distribution within the aeration and saturation zones of the Upper Jurassic limestone massif of the southern part of the Cracow- Cz stochowa Upland (Poland)

2014 ◽  
pp. 59-68 ◽  
Keyword(s):  
Upper Jurassic ◽  
Jurassic Limestone

A propos de l'age de la serie ophiolitique dans les Dinarides yougoslaves; la coupe de Mihajlovici aux confins de la Serbie et du Montenegro (region de Plevlja, Yougoslavie)

1964 ◽  
Vol S7-VI (1) ◽  
pp. 107-112 ◽  
Author(s):  
Jean Aubouin ◽  
Jean Paul Cadet ◽  
Jean Paul Rampnoux ◽  
Gonzague Dubar ◽  
Pierre Marie
Keyword(s):  
Upper Jurassic ◽  
Lower Jurassic ◽  
Jurassic Limestone

Abstract The Mihajlovici area in southwestern Yugoslavia is a mosaic of fault blocks produced by two sets of large faults, trending NW and NE. The horsts are lower Jurassic limestone, and the grabens are occupied by diabase-radiolarite, known as the ophiolitic series, of lower Malm age (upper Jurassic). Abundant ammonites and microfauna identify several horizons, notably the Toarcian (upper Lias, i.e., lower Jurassic) and the uppermost bed of the lower Malm, thus fixing the Malm age of the ophiolitic series.

Solnhofener Plattenkalk: a heritage stone of international significance from Germany

2019 ◽  
Vol 486 (1) ◽  
pp. 103-113 ◽  
Author(s):  
M. Kölbl-Ebert ◽  
B. J. Cooper
Keyword(s):  
Eighteenth Century ◽  
Upper Jurassic ◽  
High Price ◽  
Natural History Museums ◽  
Early Bird ◽  
History Museums ◽  
Floor Tiles ◽  
The World ◽  
Jurassic Limestone ◽  
Solnhofen Limestone

AbstractIn Bavaria (Germany), between Solnhofen and Kelheim, numerous quarries allow utilization of a thinly plated Upper Jurassic limestone known in German as the Solnhofener Plattenkalk and in English as Solnhofen Limestone. Here limestone slabs have been quarried for centuries and it is not necessary to cut the limestone with a saw as it can be split conveniently into thin and even slabs or sheets which are used for floor tiles and wall cladding. Thick slabs of especially fine quality have been used for lithography. This later utilization began in the late eighteenth century with lithographic Solnhofen Limestone soon being marketed worldwide. The industry continues on a smaller scale today. Slabs are quarried by hand so as not to break them, accounting for their high price. Because of this ‘gentle’ quarrying method, fossils have also been found. Although rare, over time many Solnhofen fossil specimens have found their way into natural history museums throughout the world. Most noteworthy is the early bird Archaeopteryx. Given its utilitarian usage worldwide as a lithographic stone, and its sale for centuries as floor tiles, coupled with its being a source of unique fossils, Solnhofener Plattenkalk is recommended here as a Global Heritage Stone Resource.

Recherche d'eau dans les vallees seches; probleme typique de Sacy (Yonne) [with discussion]

1957 ◽  
Vol S6-VII (7) ◽  
pp. 929-935
Author(s):  
Claude Megnien
Keyword(s):  
Electrical Resistivity ◽  
Ground Water ◽  
Upper Jurassic ◽  
The Other ◽  
Paris Basin ◽  
Dry Valley ◽  
Jurassic Limestone

Abstract Combined geologic and geophysical (electrical resistivity) surveys in the dry valley of Sacy, Yonne, France, led to the discovery of two subsurface aquifers, one in the eluvial cover, the other in deeply weathered Rauracian (Jurassic) limestone. This type of exploration is considered suitable for ground-water investigations in the upper Jurassic plateaus of the Paris basin.

scholarly journals Doline morphometry of mt. Miroc using GIS methods

2007 ◽  
Vol 87 (2) ◽  
pp. 21-30 ◽  
Author(s):  
Tamás Telbisz ◽  
László Mari ◽  
Jelena Calic
Keyword(s):  
Slope Angle ◽  
Upper Jurassic ◽  
Axis Orientation ◽  
Field Evidence ◽  
Gis Tools ◽  
Determining Factors ◽  
Young Stage ◽  
Gis Methods ◽  
Jurassic Limestone ◽  
Doline Density

Mt. Miroc doline karst evolution and its determining factors such as geology, relief and structure are analyzed using GIS tools. The 3064 dolines found in a 123 km2 area support the use of different statistical methods. Doline density (24.9 km-2) is relatively high and mean doline area (1697 m2) is relatively small. Both frequency analysis and field evidence suggest that doline karst evolution of the area is at a relatively young stage. Spatial distribution of the dolines is mainly determined by the Upper Jurassic limestone, and slope angle less than 12?. Furthermore, the anticline limbs and axis as well as the SW-NE trend fault lines are also in connection with doline density. However, doline long axis orientation is tpyically NW-SE, which is not in accordance with the observed rupture systems. Therefore, this issue requires further research.

Contribution a l'etude geologique de la chaine calcaire des monts Peloritains (zone de Militello-Tortorici), Sicile nord-orientale

1961 ◽  
Vol S7-III (6) ◽  
pp. 568-579 ◽  
Author(s):  
G. Duee
Keyword(s):  
Lower Cretaceous ◽  
Upper Cretaceous ◽  
Upper Jurassic ◽  
Lower Jurassic ◽  
Tectonic Deformation ◽  
Dolomitic Limestone ◽  
Early Tertiary ◽  
Lower Unit ◽  
Jurassic Limestone ◽  
Northeastern Sicily

Abstract The limestone chain of the Peloritani mountains in northeastern Sicily is made up of several tectonic units differing stratigraphically, and complexly thrust-faulted into various anomalous positions. The Longi (or lower) unit and its eastern extension, the dolomitic unit, comprise 250-300 m of red quartz conglomerate of pre-Liassic age; 500 m of Jurassic limestone and dolomite concordant on the conglomerate; and about 300 m of upper Jurassic-Cretaceous-Eocene marl and limestone. In the Longi unit, a thick molasse of early Tertiary age also occurs. The Galati unit consists of phyllite overlain unconformably by various facies of Mesozoic limestone, dolomitic limestone, marl, and conglomerate. The red limestone unit comprises upper Cretaceous marl overlain by lower Jurassic limestones, Eocene beds transgressive over both, and Oligocene-Miocene molasse at the top. The tectonic relationships of these units are highly complicated. Much thrusting probably occurred prior to deposition of the molasse. Jurassic-lower Cretaceous flysch on the south has been overridden by the chain, but the age of this thrusting is problematic. The molasse seems to have been deposited transgressively over all other formations and tectonic units, but some important tectonic deformation certainly is post-molasse and part is Quaternary.

Mineral composition and gemological characteristics of the fossil marine reptiles of the Ulyanovsk region

2018 ◽  
pp. 12-16 ◽  
Author(s):  
D. A. Petrochenkov
Keyword(s):  
Chemical Composition ◽  
Bone Tissue ◽  
Mineral Composition ◽  
Bone Structure ◽  
Upper Jurassic ◽  
Marine Reptiles ◽  
Ulyanovsk Region ◽  
Impurity Elements ◽  
Wide Assortment

Fossils of marine reptiles are a new jewelry and ornamental material and collected in the Ulyanovsk region from the Upper Jurassic deposits. They consist of (wt. %): calcite — 52, apatite — 24 and pyrite — 23, and also gypsum presents. The contents of radioactive and carcinogenic elements are close to background. The original bone structure of reptiles is preserved. Apatite replaces the bone tissue of marine reptiles, forming a cellular framework. According to the chemical composition, apatite refers to fluorohydroxyapatite with an increased Sr content. The size of the crystals is finely-dispersed. Calcite and pyrite fill the central parts of the cells. Calcite crystals of isometric and elongated shape, 0,01—0,05 mm in size, form blocks up to 0,3 mm during intergrowth. Calcite fills thin, discontinuous veins along the contour of cells with a width of up to 0,03 mm. In calcite, among the impurity elements, there are (wt. %, on the average): Mg — 0,30, Mn — 0,39 and Fe — 0,96. Pyrite forms a dispersed impregnation in calcite and apatite, content of impurities is, wt. %: Ni — up to 0,96 and Cu — up to 0,24. On technological and decorative characteristics of fossils of sea reptiles of Ulyanovsk region are qualitative jewelry and ornamental materials of biomineral group, allowing to make a wide assortment of jewelry and souvenir products.

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