نتایج جستجو برای: chronostratigraphy

تعداد نتایج: 210  

2002
Luc Ortlieb L. Ortlieb

A general reconnaissance of the remnants of Pleistocene high sea-level stands was conducted along the Sonora coast, between the Rio Colorado delta and the Guaymas area, to determine the neotectonic comportment of the mainland margin of the Gulf of California plate boundary. The generally low relief of this coastal region and the extensive cover of the late Quaternary eolian sands (in the northe...

Journal: :Geologica Acta 2022

Despite the large number of magnetostratigraphic studies in South Pyrenean Basin aiming to calibrate basin chronostratigraphy and biostratigraphic scales, Eastern Jaca remains unexplored from this perspective, its relation with Ainsa is not fully understood. In work we contribute new data 950m thick Las Bellostas section, located northern hinge Balzes anticline. Well-proven primary signal (posi...

Journal: :Marine Geology 2021

Abstract Extent and chronology of 24 buried seabed-exposed mass transport deposits (MTDs) on the continental slope Canadian Beaufort Sea were compiled towards a regional geo-hazard assessment region. A total 2220 lines 3.5 kHz sub-bottom profiler (SBP) data (~40,000-line kilometres) covering an area 9740 km2 analyzed to allow new understanding instability in Several sediment cores acquired acro...

Journal: :Austrian Journal of Earth Sciences 2022

Abstract The Gosau Group (Turonian to Ypresian) of the Eastern Alps is a synorogenic wedge-top succession that accumulated in active depocenters an oblique-convergent plate tectonic setting. Due high morphological differentiation by tectonism, displays wide range facies as well marked heteropy and thickness variations over short lateral distances. In area locations Russbach, Hochmoos Formation ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم زمین 1388

چکیده ندارد.

Journal: :Solid Earth 2021

Abstract. After more than a century of research, the chronology deformation external part western Alpine belt (France) is still controversial for Miocene epoch. In particular, poor dating foreland basin sedimentary succession hampers comprehensive understanding kinematics. Here we focus on molasse deposits northern subalpine massifs, southern Jura, Royans, Bas-Dauphiné, Crest, and La Bresse bas...

Journal: :South African Journal of Geology 2021

Abstract The Namib Desert and the Kalahari constitute drylands of southern Africa, with current relatively humid portions latter having experienced periodically drier conditions during Late Quaternary. This study explores range dryland archives proxies available for past ~190 ka. These include classic geomorphological proxies, such as sand dunes, well water-lain sediments within former lakes ep...

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