نتایج جستجو برای: tithonian

تعداد نتایج: 143  

Journal: :Journal of African Earth Sciences 2021

This paper concerns the sedimentary successions deposited in Mandawa Basin after separation of East and West Gondwana during subsequent southwards drift Madagascar Late Jurassic to Early Cretaceous times. The aim this study was provide more specific details on sedimentation report mineralogical petrographical characteristics less well documented successions, namely Kipatimu, Mitole Nalwehe form...

Journal: :Tectonophysics 2022

The imbricated margin of stable Adria, which belongs to the External Dinarides, comprises a chain islands, follow dominant NW-SE Dinaric trend in northern segment, while tectonic orientation changes WNW-ESE central Adriatic area, near Split. new paleomagnetic results documented this paper are from islands latter and can be interpreted terms tectonics together with already published robust data ...

2007
Tyler B. Coplen

At Site 167 a nearly complete sedimentary section ranging in age from Pleistocene to Tithonian and composed almost entirely of calcareous ooze, chalk, cherty chalk, cherty limestone, and argillaceous limestone was drilled to a depth of approximately 1170 meters where the basaltic basement was reached. The relative continuity and age of the section makes it useful for studies of deep-sea diagene...

2014
Jonathan P. Tennant Philip D. Mannion Mathew Wedel

Atoposaurid crocodyliforms represent an important faunal component of Late Jurassic to Early Cretaceous Laurasian semi-aquatic to terrestrial ecosystems, with numerous spatiotemporally contemporaneous atoposaurids known from western Europe. In particular, the Late Jurassic of France and Germany records evidence for high diversity and possible sympatric atoposaurid species belonging to Alligator...

2014
David C. Steart Alan R.T. Spencer Russell J. Garwood Jason Hilton Martin C. Munt John Needham Paul Kenrick

We document a new species of ovulate cone (Pararaucaria collinsonae) on the basis of silicified fossils from the Late Jurassic Purbeck Limestone Group of southern England (Tithonian Stage: ca. 145 million years). Our description principally relies on the anatomy of the ovuliferous scales, revealed through X-ray synchrotron microtomography (SRXMT) performed at the Diamond Light Source (UK). This...

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