Results 101 to 110 of about 7,296 (255)

Unlocking paleo-environmental information from Early Cretaceous shelf sediments in the Helvetic Alps: stratigraphy is the key! [PDF]

open access: yes, 2018
The northern alpine Helvetic thrust-and-fold belt includes an Early Cretaceous shallow-water carbonate succession, which was part of an extensive carbonate platform rimming the northern Tethyan margin.
Bodin, Stéphane   +4 more
core  

Early Cretaceous (Valanginian) sea lilies (Echinodermata, Crinoidea) from Poland

open access: yesSwiss Journal of Geosciences, 2009
Valanginian strata in central epicratonic Poland have recently yielded crinoids, not previously recorded from the area. The fauna comprises isocrinids (Balanocrinus subteres, B. gillieroni, “Isocrinus?” lissajouxi), millericrinids (Apiocrinites sp.) and comatulids (Comatulida indet.).
openaire   +1 more source

The relation between isotopic composition of argon and carbon in natural gases [PDF]

open access: yes
The methods and results of determination of the argon and carbon isotope compositions of hydrocarbon gases of Mezozoic complexes of Western Siberia are presented.
Gavrilov, Y. Y.   +2 more
core   +1 more source

The Vaca Muerta–Quintuco system (Tithonian–Valanginian) in the Neuquén Basin, Argentina: A view from the outcrops in the Chos Malal fold and thrust belt

open access: yes, 2016
The Vaca Muerta–Quintuco system (uppermost lower Tithonian–lower Valanginian) is a thick shallowing-upward sedimentary cycle consisting of dark bituminous shales, marlstones, limestones, and sandstones, cropping out in the Neuquen Basin, west–central ...
D. Kietzmann   +6 more
semanticscholar   +1 more source

A Neoselachian shark from the non-marine Wessex Formation (Wealden Group: early Cretaceous, Barremian) of the Isle of Wight, southern England [PDF]

open access: yes, 2006
Bulk screening of Early Cretaceous (Barremian) Wessex Formation strata exposed on the south-east coast of the Isle of Wight, southern England, has resulted in the recovery of neoselachian shark teeth referred to the scyliorhinid Palaeoscyllium. These are
Sweetman, Steven C.   +1 more
core   +1 more source

First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications

open access: yes, 2018
The Tithonian-Valanginian time interval in the Mendoza Shelf (Neuquen Basin, Argentina) is well exposed in the Rio Salado, Puesto Loncoche and Cuesta del Chihuido sedimentary sections. From those localities, more than fifty preserved oyster shells of the
Alejandro Rubén Gómez Dacal   +5 more
semanticscholar   +1 more source

LATE BERRIASIAN–EARLY VALANGINIAN EVOLUTION AND DROWNING OF THE GETIC CARBONATE PLATFORM (SE SERBIA)

open access: yesRivista Italiana di Paleontologia e Stratigrafia
 The Early Cretaceous was a time of significant development of carbonate platforms on the margins of the Tethys Ocean, including the Getic Carbonate Platform, in the northern peri-Tethys realm, cropping out in the Southern Carpathians (Romania) and ...
Jelena Stefanović   +3 more
doaj   +1 more source

Stratigraphic study of Qalqula Formation, Sulaymaniyah Governorate - NE Iraq

open access: yesTikrit Journal of Pure Science, 2019
Qulqula Formation studied in Suren mountain - Sulaymaniyah- NE Iraq. 10 samples collected from the outcrop near Kani Seif Hamid area. Petrographic and mineralogical investigation carried out, thin sections, X- ray Diffraction (XRD) and Scanning Electron
Mohammad Jamil Ali Al-Talabani
doaj   +1 more source

Stratigraphy and chemostratigraphy of the Valanginian (pro parte) from Loma Solana, Sierra de Quípar (External Subbetic, Cehegín, Murcia) [PDF]

open access: yes, 2014
The stratigraphy, biostratigraphy and geochemistry (C stable isotopes and RSTE trace elements) of a succession of Valanginian age outcropping in Loma Solana (External Subbetic) is presented.
Aguado, Roque   +6 more
core  

Climatically Versus Eustatically Controlled, Sediment-Supply-Driven Cycles: Carbonate–Siliciclastic, High-Frequency Sequences In the Valanginian of the Neuquén Basin (Argentina)

open access: yes, 2016
Carbonate–siliciclastic high-frequency sequences are formed by reciprocal sedimentation. In siliciclastic-dominated successions, the carbonate-rich interval is typically associated with transgressive conditions and relatively low terrigenous influx ...
E. Schwarz   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy