The Middle Jurassic was a time of marginal to shallow shelf settings dominated by organic matter-rich deposition in northern Egypt, southern Tethys. Paleoenvironmental and sequence stratigraphic reconstructions are paramount significance for better understanding basin history related reservoirs source rock units. For this purpose, detailed palynomorph palynofacies analysis the Khatatba Formatio...

Palynological material is the entire acid-resistant microscopic organic matter recovered from a sediment or sedimentary rock. This can be subdivided into three broad classes: palynomorphs (i.e., dinoflagellate cysts, spores, pollen, acritarchs, foraminiferal linings, fungal material and algae), palynodebris (i.e., membranous, brown and opaque material) and amorphous OM. The research articulated...

Today's cryosphere reflects an extreme climate state that developed through stepwise global Cenozoic cooling. In this context the opening of Fram Strait, Atlantic-Arctic Gateway (AAG), enabled deep-water exchange between northern North Atlantic and Arctic Ocean thereby influenced ocean circulation climate. Here we present a new age model for Drilling Program Site 909 located in Molloy Basin, ke...

The lower reaches of the River Ure, on flanks Pennine Hills in northern England, contain sedimentary and erosional landforms that are a record fluvial activity during deglaciation valley-glacier retreat at end last (Devensian) glacial period, subsequent post-glacial Holocene. Terraces channels, most which now relict features well above altitude present river, attest to impacts massive meltwater...

Introduction Biological life, atmospheric circulation and the Earth’s climate may be influenced by UV-B radiation. In plants, Ultraviolet Absorbing Compounds (UACs) are an indicator of exposure, abundance UACs in pollen spores embryophytes is measurable using Fourier Transform Infrared (FTIR) micro-Spectroscopy. However, understanding influence common chemical pre-treatments on sub-fossil with ...

Abstract. The role and climatic impact of the opening Drake Passage how it affected both marine terrestrial environments across Eocene–Oligocene transition (EOT ∼34 Ma) period remains poorly understood. Here we present new palynomorph data compared with recently compiled lipid biomarker (n-alkane) from Ocean Drilling Program (ODP) Leg 113, Site 696, drilled on margin South Orkney Microcontinent...

Abstract. Wildfires, as a key disturbance in forest ecosystems, are shaping the world's boreal landscapes. Changes fire regimes closely linked to wide array of environmental factors, such vegetation composition, climate change, and human activity. Arctic regions and, particular, Siberian forests experiencing rising air ground temperatures with subsequent degradation permafrost soils leading shi...

The Aurora Subglacial Basin (ASB) catchment contains 3–5 m of sea-level equivalent ice volume that drains to the Sabrina Coast, East Antarctica via Totten Glacier system. Observed thinning and retreat indicate regional sensitivity oceanographic atmospheric warming. Paleoclimate studies climatically sensitive catchments are required understand evolution Antarctic Ice Sheet (EAIS) its outlet glac...

The Geirud Formation consists mainly of clastic sediments which are interbedded with limestone stringers. This rock unit is well-exposed along the Central Alborz Range in northern Iran. The Geirud Formation rests unconformably on the Mila Formation (Upper Cambrian) and is conformably overlain by the Mobarak Formation (Lower Carboniferous). This study was undertaken to determine the geologi...

New findings acquired in Armorican shelf (core MD08-3204 CQ: Bay of Quiberon and core VK03-58bis: South Glénan islands) depict Holocene paleoenvironmental changes since 10 ka BP through a multi-proxy dataset including sedimentological palynological data. First, grain-size analyses AMS-14C dates show common sedimentary history for both study cores. The slowdown the relative sea level (RSL) rise ...