Results 31 to 40 of about 242 (176)

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

Brazilian 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, José Roberto Cerqueira, Consuelo Lima Navarro de Andrade, Hélio Jorge Portugal Severiano Ribeiro, Karina Santos Garcia, Flávia Lima e Cima Miranda, Olívia Maria Oliveira, Antônio Fernando Queiroz, Luiz Carlos Lobato dos Santos   +8 more
doaj   +1 more source

The palynofacies pattern for the Lower Cretaceous of central Poland

Geological Quarterly, 2012
Sedimentary environments and palynofacies were identified in the Lower Cretaceous of central Poland. The study was based on lithological observations, sedimentological logging and palynological investigations in the following boreholes: Poddebice PIG2, Kolo IG3 and IG4, Wągrowiec IG1, Sarnow IG1, Ciechocinek IG3, Mszczonow IG1, Korabiewice PIG1 ...
Krzysztof LESZCZYŃSKI, Marta WAKSMUNDZKA   +1 more
openaire   +1 more source

Stratigraphic

Egyptian Journal of Petroleum, 2013
The stratigraphic distribution of the palynomorphs and particulate organic matter was studied in the subsurface Lower/Middle Cretaceous sections in Ii-26-1 and Ig-30-1 wells, located in north Western Desert of Egypt.
Sameh S. Tahoun, Walid A. Makled, Tarek F. Mostafa   +2 more
doaj   +1 more source

RECONSTRUCTING KUNGURIAN (CISURALIAN, PERMIAN) TERRESTRIAL ENVIRONMENTS WITHIN A MEGACALDERA IN THE SOUTHERN ALPS (N-ITALY) USING LITHOFACIES ANALYSIS, PALYNOLOGY AND STABLE CARBON ISOTOPES

Rivista Italiana di Paleontologia e Stratigrafia, 2023
During the Permian, climate experienced a change from icehouse to greenhouse conditions. Few multidisciplinary studies have investigated Kungurian (late Cisuralian) tropical terrestrial ecosystem and climate changes.
Francesca Vallé, HENDRIK NOWAK, EVELYN KUSTATSCHER, SALLY ERKENS, GUIDO ROGHI, CORRADO MORELLI, KARL KRAINER, NEREO PRETO, CHRISTOPH HARTKOPF-FRÖDER   +8 more
doaj   +1 more source

Palynofacies, environments, and climate changes in the Magdalena River Basin [PDF]

, 2021
ABSTRACT Four environments (swamp, shallow lake, alluvial flood plain, and lagoon) from the Lower Magdalena River Basin were studied for palynofacies’ quantitative characterization. Each environment has been described based on four criteria: palynomorph assemblage, organic matter concentration, organic matter palynological composition ...
openaire   +1 more source

Multi‐proxy sequence stratigraphy of a mixed carbonate–siliciclastic shelf across the Jurassic–Cretaceous transition

The Depositional Record, Volume 12, Issue 4, September 2026.
An integrated facies, MS and XRF‐based approach applied to the Tithonian–Berriasian Sidi Khalif Formation (central Tunisia) resolves five Tithonian and eight Berriasian third‐order sequences, showing how mixed carbonate–siliciclastic shelves record coupled eustatic, climatic and tectonic controls and providing a transferable template for similar mud ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
wiley   +1 more source

Palynostratigraphy, palynofacies and depositional environment of a lignite-bearing succession at Surkha Mine, Cambay Basin, north-western India

Acta Palaeobotanica, 2015
The paper reports palynology and palynofacies studies of lignite-bearing sediments exposed in an opencast mine succession at Surkha, Bhavnagar District, in the coastal region of Gujarat, India. The study examined the relationships between the palynoflora,
Monga Priyanka, Kumar Madhav, Prasad Vandana, Joshi Yogesh   +3 more
doaj   +1 more source

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

Sedimentology, Volume 73, Issue 5, Page 1631-1663, August 2026.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi, Isabel Abad, Elisa Laita, Ali Mokhtar Samet, Matías Reolid   +4 more
wiley   +1 more source

Terrestrial Ecosystem Response to Changing Temperature and Seasonality in the Paleocene‐Eocene Thermal Maximum: Shallow Marine Records From the Salisbury Embayment, USA

Paleoceanography and Paleoclimatology, Volume 41, Issue 3, March 2026.
Abstract The Paleocene‐Eocene thermal maximum (PETM, ∼56 Ma) is marked by a massive and rapid rise in atmospheric CO2 and ∼5°C of global warming. It is globally characterized by a negative carbon isotope excursion (CIE), and, at least locally, is preceded by a pre‐onset excursion (POE).
Debra A. Willard, Mei Nelissen, Appy Sluijs, Henk Brinkhuis, Tammo Reichgelt, Marci Robinson, Jean M. Self‐Trail   +6 more
wiley   +1 more source

KEROGEN CHARACTERIZATION OF THE VACA MUERTA FORMATION (TITHONIAN–VALANGINIAN), AT MALLÍN QUEMADO AND PUERTA CURACO, NEUQUÉN BASIN, CENTRAL-WEST PATAGONIA, ARGENTINA. PALYNOFACIES AND GEOCHEMICAL APPROACH

Publicación Electrónica de la Asociación Paleontológica Argentina
This contribution integrates palynofacies, organic geochemical and sedimentological analyses to characterize the depositional environment and the kerogen properties related to the hydrocarbon source potential of the Vaca Muerta Formation at the Mallín ...
Luis Sebastián Agüero, Daniela Elizabeth Olivera, Marcelo Adrián Martínez, Germán Otharán   +3 more
doaj   +1 more source