نتایج جستجو برای: middle jurassic
تعداد نتایج: 158491 فیلتر نتایج به سال:
Based on the results from previous research Mesozoic igneous rocks, as well tectonic environments in northern South China Sea and southern East (NSCS-SECS), geophysical parameters, strata, characteristics of seismic facies NSCS-SECS were investigated. These findings combined with analysis balanced profile evolution to re-evaluate SECS since Jurassic. Furthermore, burial history simulation wells...
Neuroptera has a history of more than 270 million years, exhibiting broadest familial diversity in the Mesozoic, especially in the Jurassic and Cretaceous (New 1989; Ponomarenko 2002; Grimaldi & Engel 2005; Winterton et al. 2010). Grammolingiidae is a small family with limited distribution temporally and geographically, only recorded in the Jurassic of all East Asia and the southern Central Asi...
Abstract. The Slyne Basin, located offshore NW Ireland, is a narrow and elongated basin composed of series interconnected grabens half-grabens, separated by transfer zones coincident with deep crustal structures formed during the Silurian- to Devonian-aged Caledonian Orogeny. product complex, polyphase structural evolution stretching from Permian Miocene. Initially, relatively low-strain riftin...
چکیده ندارد.
Chemical characteristics of biotite from Boroujerd Granitoid complex (Middle Jurassic), Western Iran
Biotite samples from different units of Boroujerd Granitoid Complex (BGC) of the Sanandaj-Sirjan Zone, western Iran, have beenanalyzed by electron microprobe for major elements. Biotite analyses from three units of quartzdiorite, granodiorite and monzograniteof BGC have their own distinct non-overlapping compositional fields in the annite – siderophyllite – phlogopite – eastonitequadrilateral (...
Even though a handful of long-lived reptilian clades dominated Mesozoic marine ecosystems, several biotic turnovers drastically changed the taxonomic composition these communities. A seemingly slow paced, within-geological period turnover took place across Early–Middle Jurassic transition. This saw demise early neoichthyosaurians, rhomaleosaurid plesiosaurians and plesiosauroids in favour ophth...
Ornithischian dinosaurs have been discovered in Thailand, Laos, and Malaysia. These bird-hipped herbivores remain relatively rare by comparison with saurischian dinosaurs. In the Late Jurassic, stegosaurs basal neornithischians from Thailand showed similarities to Middle-Late Jurassic taxa China. Ornithischians appeared fossil record again during late Early Cretaceous (Aptian-Albian) of Laos. T...
The Qaidam Basin is one of the major coal-bearing basins in northeastern China with coal seams mainly preserved Lower–Middle Jurassic. Middle Jurassic sedimentary environment, sequence stratigraphy, paleoclimate, and accumulation have been extensively studied, while characteristics depositional evolution Lower series are less well known. We systematically analysed facies association, system, ba...
Analysis of the distribution of major components and heavy metals in a section of post-Jurassic deposits of southern Hess Rise (Deep Sea Drilling Project Site 465), the results of processing analytical data by factor analysis, interpretation of information on mineralogy and lithology of sediments, and evaluation of rates of component accumulation enable distinction of the main stages in the geo...
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