نتایج جستجو برای: campanian maastrichtian

تعداد نتایج: 973  

Journal: :Minerals 2021

The composite Albian–Eocene orogenic wedge of the northern part Inner Western Carpathians (IWC) comprises European Variscan basement with Upper Carboniferous–Triassic cover and Jurassic to Cretaceous sedimentary successions a large oceanic–continental Atlantic (Alpine) Tethys basin system. This paper presents an updated evolutionary model for principal structural units (i.e., Fatricum, Tatricum...

2005
Tracy D. Frank Deborah J. Thomas R. Mark Leckie Michael A. Arthur Paul R. Bown Kelly Jones Jackie A. Lees

[1] We present new isotopic and micropaleontological data from a depth transect on Shatsky Rise that record the response of the tropical Pacific to global biotic and oceanographic shifts during the mid-Maastrichtian. Results reveal a coupling between the upper ocean, characterized by a weak thermocline and low to intermediate productivity, and intermediate waters. During the earliest Maastricht...

Journal: :Basin Research 2021

The combined effects of post-rift magma emplacement and tectonic inversion on the hyper-extended West Iberian Margin are unravelled in detail using multichannel 2D/3D seismic data. Estremadura Spur, acting as an uplifted crustal block bounded by two first-order transfer zones, shows evidence four events each with a distinctive seismic-stratigraphic response that can be used to demonstrate tecto...

2017

The Enugu Formation is a member of the Nkporo Group, and forms part of the basal stratigraphic unit of the Anambra Basin in south-eastern Nigeria. The Enugu Formation has been the subject of many studies concerning stratigraphy [1], depositional environments [2; Onuigbo et al. [3], organic geochemistry [4-6], paleoecology [7], palynology [7-9] and ichnology [10]. Nwajide & Reijers [2] were the ...

2017
Tracy D. Frank Michael A. Arthur

A global compilation of deep-sea isotopic records suggests that Maastrichtian ocean-climate evolution was tectonically driven. During the early Maastrichtian the Atlantic intermediate-deep ocean was isolated from the Pacific, Indian, and Southern Oceans; deep water formed in the high-latitude North Atlantic and North Pacific. At the early/late Maastrichtian boundary a major reorganization of oc...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید