Stratigraphic cluster analysis using aquatic palynomorphs preserved in the core sediments revealed a rapid eutrophication due to anthropogenic activities from mid 1960s Beppu Bay, East Kyushu, Japan. These assemblages were divided into three major units: BP-I, BP-II and BP-III, also only dinoflagellate cyst following four units Bay: BP-A, BP-B, BP-C, BP-D. Unit boundaries based on cysts differe...

Palynological study of Tungu Buzum Hill was investigated with a view towards determining the age outcrop, compare its miospore content adjacent Buzu Valley carbonaceous shale, their stratigraphic relationship and paleoenvironment deposition litho-sequence. Field involved litho-description logging achieved by noting rock type, mineralogical composition, bed thickness, texture, sorting, roundness...

Late Cretaceous coastal plain deposits of the Prince Creek Formation (PCF) offer a rare glimpse into an ancient, high-latitude, arctic greenhouse ecosystem for which there is no modern analog. Here, we employ quantitative biofacies analysis to explore spatio-temporal variability in PCF palynomorph and microbiota assemblages from nine paleosol horizons exposed along Colville River, North Slope, ...

In the External Zone of Betic Cordillera (S Spain), upper Muschelkalk (Ladinian) facies have been known for decades; however, so far there is no stratigraphic record Anisian deposits. present study, new biostratigraphic data from a carbonate succession in easternmost Subbetic domain reveal Pelsonian-Illyrian (Anisian) age. The nautiloids Germanonautilus salinarius and saharonicus are documented...

The Cretaceous-Paleogene (K-Pg) boundary event, triggered by the Chicxulub asteroid impact in Mexico ∼66 Myr ago, is recognized as one of major environmental crises Earth's history. Its effects on evolution tropical vegetation were drastic, giving rise to closed-canopy rainforest. Despite its importance, actual K-Pg event layer has not yet been identified terrestrial sections within latitudes. ...

Abstract Palynological studies of lacustrine sediments in Eocene maar craters on the Sprendlinger Horst (Hesse, SW Germany) are complemented by 26 core samples from Groß-Zimmern. In addition, diatoms have been studied to assess palaeolimnological conditions. The palynomorph assemblage proves a middle age more or less coeval upper part nearby succession at Messel. includes 33 m massive finely la...

An integrated benthic foraminiferal and organic matter analysis of samples obtained from sedimentary sections exposed in the Mangoule-Bonepoupa area, revealed a very shallow marine paleo-depositional environment for sediments studied, with considerable influx continental that were accumulated during Cenomanian-Turonian age. With reference to lithostratigraphic profile Douala/Kribi-Campo Basin, ...

The Subang, Kaliwangu, and Citalang Formation which are important parts of the Bogor Basin have not been studied, especially from palynostratigraphic aspect. Therefore, this study aims to conduct these three formations that well exposed in Cikandung River area, Sumedang Regency, West Java. Method used research is divided into several stages including sampling by spot sampling; preparation palyn...

The Middle Jurassic in the north Western Desert, Egypt, was a time of complex tectonics and increased environmental perturbations attributed to predominant sedimentation organic carbon-rich fine siliciclastic carbonate deposits Khatatba Formation. Although some studies have addressed hydrocarbon potential source rock characteristics Formation, regional-scale investigation prevalent paleoenviron...

• Late Eocene continental climate in Central Asia remains poorly understood. Tibetan lake deposits preserve records of palaeoenvironmental changes. Saline lakes east-central Tibet existed a cool and semi-arid desert-steppe. aridification caused shift Asia. palaeoclimate was primarily influenced by regional to global drivers. Ancient detailed Cenozoic environmental changes, providing information...