Results 81 to 90 of about 2,089 (196)

Paleoenvironmental characterization of a Lower Cretaceous section of the Recôncavo Basin, Bahia, Brazil

open access: yesBrazilian Journal of Geology, 2020
The objective of this work was to evaluate the paleodepositional conditions and potential for the hydrocarbons generation of the outcropping shales in the Southern Compartment of the Recôncavo Basin, indicative of the Candeias and Maracangalha Formations
Diego Nery do Amaral   +8 more
doaj   +1 more source

Paleoenvironmental Changes Based on Palynofacies Analysis of the Albian - Maastrichtian Interval of the Pernambuco Basin, Northeast Brazil

open access: yesAnuário do Instituto de Geociências - UFRJ, 2018
In order to infer paleoenvironmental changes for the Cretaceous of the Pernambuco Basin, 26 samples collected in the IATE 1-LABIO-PE3 well were analyzed. The study includes the Albian-Maastrichtian interval, which represent the Cabo, Estiva, Itamaracá and Gramame formations.
Juan David Vallejo Ramírez   +4 more
openaire   +2 more sources

Organic matter depositional microenvironment in deltaic channel deposits of Mahanadi river, Andhra Pradesh [PDF]

open access: yes, 2009
Quantitative and qualitative variations in microscopic plant organic matter assemblages and its preservation state in deltaic channel deposits of Mahanadi River was correlated with the depositional environment in the ecosystem in order to prepare a ...
Farooqui, Anjum   +3 more
core   +2 more sources

Lacustrine organic fluxes and paleoclimatic variations during the last 15 ka : lac du Bouchet (Massif Central, France) [PDF]

open access: yes, 1996
To assess the influence of climatic changes on organic lacustrine sedimentation, two cores recovered from the centre of the Lac du Bouchet were studied by petrographical (palynofacies) and geochemical methods.
Bertrand, P.   +3 more
core   +3 more sources

Karakteristik Endapan Tsunami Berdasarkan Bukti Palinologi dan Sedimentologi di Bagian Timur Pulau Simeulue, Aceh, Indonesia

open access: yesJurnal Kelautan Tropis, 2020
Simeulue Island was located in an active tectonic zone that causes earthquakes followed by tsunamis. This research was conducted to get a detail explanation of tsunami deposits found in eastern Simeulue Island.
Winarni Winarni   +6 more
doaj   +1 more source

Palaeogeographic Variability and Depositional Environments of the Upper Jurassic Carbonate Rocks of Velika Kapela Mt. (Gorski Kotar Area, Adriatic Carbonate Platform, Croatia) [PDF]

open access: yes, 2002
Synsedimentary tectonics caused significant differentiation of sedimentary environments of the Adriatic Carbonate Platform during the Kimmeridgian. The most important changes have been recorded in W and central Croatia: along the NW part in present day W
D. Matičec   +5 more
core   +1 more source

Organic matter accumulation and preservation controls in a deep sea modern environment: an example from Namibian slope sediments.

open access: yes, 2004
The Lüderitz upwelling cell is presently the most productive area of the Benguela current system and abundant organic matter (OM) accumulates on the adjacent slope sediments even at great water depth. OM from two cores taken on the slope and covering the
Bertrand, Philippe   +3 more
core   +3 more sources

Middle Jurassic vegetation dynamics based on quantitative analysis of spore/pollen assemblages from the Ravenscar Group, North Yorkshire, UK [PDF]

open access: yes, 2016
Quantitative analysis of the distribution of dispersed spores and pollen (sporomorphs) has been used to assess temporal floral variation through the Middle Jurassic Ravenscar Group (Aalenian–Bathonian), North Yorkshire, UK.
Slater, S.M., Wellman, C.H.
core   +2 more sources

The White Stone Band of the Kimmeridge Clay Formation, an integrated high resolution approach to understanding environmental change

open access: yes, 2004
The Kimmeridge Clay is a Jurassic mudrock succession that shows Milankovitch Band climatic cyclicity. A key issue is to determine how the subtle changes that define this cyclicity result from climatic change.
Kemp, A.E.S.   +2 more
core  

Organic facies variation in the late Kimmeridgian of the Boulonnais area (northernmost France) [PDF]

open access: yes, 2001
Recent studies of the upper Kimmeridgian of the Boulonnais area (northernmost France) have provided a sequence-stratigraphical framework that is here used to help interpret variations in sedimentary organic matter (OM) content and composition in response
Bialkowski, Anne   +4 more
core   +3 more sources

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