Results 81 to 90 of about 2,191 (193)
A re-examination of the early Toarcian fish fossils preserved in public paleontological collections in Luxembourg revealed 70 specimens of large Toarcian pachycormid fish with an excellent three-dimensional preservation within calcareous nodules.
Robert Weis +4 more
doaj +1 more source
THE LOWER BAJOCIAN GAETANI LEVEL: LITHOSTRATIGRAPHIC MARKER OF A POTENTIAL OCEANIC ANOXIC EVENT
In this paper we document in detail the transition from the Rosso Ammonitico Lombardo to the Radiolarites outcropping at Alpe Turati (Albavilla, Como) in the Lombardy Basin of the Southern Alps.
ELISABETTA ERBA +2 more
doaj +1 more source
Western Greece and Ionian Sea petroleum systems [PDF]
In western Greece, the Ionian and pre-Apulian zones represent, respectively, the basin and the transitional zone (slope) to the Apulian platform. The Apulian platform constitutes the weakly deformed foreland of the external Hellenides.
Karakitsios, Vassilis
core +2 more sources
A Paleotectonic Atlas of the African Plate: Permian to Recent
ABSTRACT The fragmentary release of petroleum data defining the deep structure and stratigraphy of African basins has been integrated with existing literature to compile 19 tectonic maps over key geological intervals from Permian to Recent times. African plate margins range in their age of opening from Late Triassic (off Lebanon), through Early/Middle ...
Duncan S. Macgregor, Colin V. Reeves
wiley +1 more source
Thallium-isotopic compositions of euxinic sediments as a proxy for global manganese-oxide burial [PDF]
© The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution.
Horner, Tristan J. +4 more
core +1 more source
The organic record of Oceanic Anoxic Events: Toarcian vs Cenomanian-Turonian
The Mesozoic is marked by periods of profound climatic and paleoceanographic changes of the planet, representing major environmental perturbations and global carbon cycle disturbances, the so-called oceanic anoxic events (OAEs). These events are usually characterized by the deposition of sediments rich in organic matter (OM) which further validates the
Fonseca, Carolina +3 more
openaire +1 more source
Abstract Boundaries in the Phanerozoic chronostratigraphic scale are mainly precisely defined and dated, and many correspond to environmental catastrophes induced by the emplacement of LIPs. The pre‐Ediacaran geological timescale is currently subdivided by approximate absolute ages.
Shuan‐Hong Zhang +7 more
wiley +1 more source
The early Toarcian (∼183 Ma) was characterized by pronounced climate warming associated with massive release of 13C-depleted carbon to the exogenic system, as evidenced by globally recognized negative carbon-isotope excursions (N-CIE) in biospheric carbon reservoirs. Global warming during this interval triggered a variety of environmental perturbations,
Chen, W +6 more
openaire +1 more source
Abstract Fossilized food items found in or passed through the digestive tract of an animal (bromalites) offer a window into the dietary habits and ecological role of the producer taxon. Bromalites have been documented from several small to mid‐sized parvipelvian ichthyosaurian species from the Lower Jurassic, but are seldom documented for the largest ...
Giovanni Serafini +3 more
wiley +1 more source
Az Óbányai Aleurolit Formáció fekete palájának izotópgeokémiai és szénhidrogéngenetikai jellemzése | Isotope geochemistry and characterization of hydrocarbon potential of black shale from Óbánya Siltstone Formation [PDF]
A toarci Óbányai Aleurolit Formáció réka-völgyi szelvényének (Mecsek hegység) alsó részéből gyűjtött fekete pala minták összes szerves szén-tartalma a laminált kőzettípusban 3,89–8,12%, a vékonyréteges változatban 2,14–3,29%.
Hámorné Vidó, Mária +3 more
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