搜索结果: 1-15 共查到“地质学 Jurassic”相关记录24条 . 查询时间(0.409 秒)
An ancient desert covered in sand dunes as far as the eye could see, where dinosaurs and small mammals once roamed, may have been the real Jurassic Park. Today, the Navajo Sandstone, as it's called, i...
Optical and geochemical characterization of Upper Sinemurian (Lower Jurassic) fossil wood from the Lusitanian Basin (Portugal)
fossil wood carbon and nitrogen stable isotopes Sinemurian Lusitanian Basin Portugal
2017/4/11
It is hypothesized that carbon and nitrogen isotopic compositions (δ13C and δ15N) of fossil wood fragments will
provide useful information regarding conditions prior, during, and after deposition. El...
Petrological vestiges of the Late Jurassic–Early Cretaceous transition from rift to back-arc basin in southernmost Chile: New age and geochemical data from the Capitán Aracena, Carlos III, and Tortuga ophiolitic complexes
Rocas Verdes ophiolites rift to back-arc basin transition U–Pb dating geochemistry mineral chemistry microbes
2017/4/11
The ophiolitic remnants of the Upper Mesozoic Rocas Verdes basin in southernmost South America were studied from
the perspectives of petrography, chemistry of minerals, bulk-rock geochemistry, and U–...
Radon activity concentrations measurements in some Jurassic caves of Poland are presented. The aim is to estimate
the radiation doses to casual visitors, cavers and guides in show caves. Radon levels...
Stable isotope compositions of a late Jurassic ammonite shell:a record of seasonal surface water temperatures in the southern hemisphere?
Stable isotope compositions late Jurassic ammonite shell seasonal surface water temperatures
2009/10/22
Exceptional preservation of aragonite secreted by ammonites offers an opportunity to determine the seasonal temperature variations of Mesozoic surface waters. Ontogenetic profiles of carbon and oxygen...
Anew species of extinct bullhead sharks,Paracestracion viohli sp. nov.(Neoselachii, Heterodontiformes),from the Upper Jurassic of South Germany
Heterodontidae Late Jurassic Schamhaupten Diversity
2009/10/20
The early history of heterodontid sharks is documented mainly by isolated teeth. So far, three different heterodontid genera have been recorded from the Jurassic: Proheterodontus from theMiddle Jurass...
The Late Jurassic neoselachian Macrourogaleus FOWLER,1947 is a palaeospinacid shark(Elasmobranchii;Synechodontiformes)
Neoselachii Palaeospinacidae Macrourogaleus Late Jurassic
2009/10/20
The taxonomy of palaeospinacid sharks (Chondrichthyes, Neoselachii) is reviewed. New skeletal material from the famous Late Jurassic lithographic limestones of southern Germany (Solnhofen area and Nus...
The Upper Oxfordian (Jurassic) thecideide brachiopods from the Kujawy area,Poland
Brachiopods Thecideides Rioultina Neothecidella Upper Jurassic Poland
2009/10/20
Thecideide brachiopods from the slope facies of a sponge-cyanobacterial bioherm exposed in theWapienno and Bielawy quarries (Kujawy, Poland) are described. Numerous specimens were found in the upper p...
Trace fossils from the Lower-Middle Jurassic Bardas Blancas Formation,Neuquen Basin,Mendoza Province,Argentina
Trace fossils ichnotaxonomy ichnofacies Neuquén Basin Jurassic
2009/10/20
Bressan, G.S. and Palma, r.M. 2009. Trace fossils from the Lower–Middle Jurassic Bardas Blancas Formation,Neuquén Basin, Mendoza Province, Argentina. Acta Geologica Polonica, 59 (2), 201–220. Warszawa...
Small theropod and ornithopod footprints in the Late Jurassic of Poland
dinosaur footprints Late Jurassic Holy cross Mountains Poland
2009/10/20
Gierliński, G.d., Niedźwiedzki, G. and Nowacki, P. 2009. Small theropod and ornithopod footprints in the Late Jurassic of Poland. Acta Geologica Polonica, 59 (2), 221–234. warszawa.
Late Jurassi...
Rock-Forming Nannofossils in Uppermost Jurassic-Lower Cretaceous Rock Units of Northwest Anatolia: Nannoconusand Its Resived Taxonomy
Rock-Forming Nannofossils Northwest Anatolia Uppermost Jurassic-Lower Cretaceous Rock
2009/7/8
Nannoconids have been recorded in a rock-forming quantity in the uppermost Jurassic-Lower Cretaceous rock units in Northwest Anatolia, Turkey. Samples were collected from seventeen stratigraphic secti...
Biostratigraphic and Environmental Analysis of the Upper Jurassic- Lower Cretaceous Carbonate Sequence in the Başoba Yayla Area (Trabzon, NE Turkey)
Biostratigraphy Depositional environment Carbonate platform Upper Jurassic-Lower Cretaceous Eastern Pontides Turkey
2009/7/8
In the Başoba Yayla (Trabzon, NE Turkey) area, which is located in the Eastern Pontides northern zone, platform carbonates were deposited during the Late Jurassic-Early Cretaceous time in environ...
Taxonomic and Paelogeographic Approaches to the Dasyclad Algae in the Upper Jurassic (Kimmeridgian)-Upper Cretaceous (Cenomanian) Peritidal Carbonates of the Fele (Yassıbel) Area (Western Taurides, Turkey)
Fele (Yassı bel) area Taurides Peritidal carbonates Dasyclad algae Salpingoporella
2009/7/8
In the Fele (Yassıbel) area in the north of Beyşehir Lake in the Western Taurides, Upper Jurassic (Kimmeridgian) - Upper Cretaceous (Cenomanian) peritidal carbonates were studied in detail. ...
Geochemical Constraints on the Provenance, Mineral Sorting and Subaerial Weathering of Lower Jurassic and Upper Cretaceous Clastic Rocks of the Eastern Pontides, Yusufeli (Artvin), NE Turkey
shale and sandstone geochemistry provenance hydraulic sorting alteration Yusufeli-Artvin northeastern Turkey
2009/7/7
An integrated petrographic and geochemical study of the shales and sandstones of Early Jurassic and Late Cretaceous age in the Yusufeli area (Turkey) was carried out to obtain more information on the...
Jurassic Volcanism in the Eastern Pontides: Is it Rift Related or Subduction Related?
Eastern Pontides geochemistry Sr-Nd isotopes Jurassic basalt Turkey
2009/7/7
The Jurassic volcanic rocks in the centre of the northern zone (south of Trabzon City) provide important constraints on the evolution of Pontides. The investigated volcanic rocks form a transitional s...