Christo Pimpirev

The Antarctic Research & Education Program is going to be implemented on the “St. Kliment Ohridski” Antarctic Bulgarian Base as a collaboration between the Bulgarian Antarctic Institute, Sofia University St. Kliment Ohridski, and the Physics and Instrumentation Laboratory of the Polytechnic Institute of Beja, Portugal. This first edition of the pro...

The paper presents results from a geomorphological research of frost action processes, forms and products, taken in the Bulgarian Antarctic Base "St. Kliment Ohridski" area in the South Bay of Livingston Island, South-Shetlands Archipelago. Studies have been carried out during the austral summer in five field seasons. They include establishing of k...

Bulgarian Antarctic Base (S62o38'25.7'' W60o21'54.9'', 13 m a.s.l.) is located in the South Bay of Livingston Island, South Shetland archipelago. The coast line has length of 1.8 km and it contains alternate sections with predominate abrasion or accumulation processes. This study comments the results of geomorphological and sedimentological investi...

The Antarctic Peninsula region has experienced in the last 50 years a warming trend of 2.5°C in the mean annual air temperature. This region is located near the latitudinal limit of permafrost, and the way it is reacting to this warming trend is still poorly known. The focus of this research is to study the thermal regime of the active layer and pe...

The Miocene sedimentary sequences in Strymon basin, Northern Greece are divided into the Lefkonas, Dafni, Houmnikon and Kriopigi Formations. The Lefkonas Formation is a new formal lithostratigraphic unit and consists of coarse poorly sorted terrigenous rocks as breccias, breccia-conglomerates, conglomerates in thick and very thick massive beds prob...

The Antarctic Peninsula region has been the focus of significant research on glaciology and climate change and shows a pronounced warming in the last decades. However, the response of permafrost to this trend remains insufficiently understood. The aim of this work is to monitor the thermal regime of the active layer and permafrost, and the influenc...

Microorganisms can be found in very different cold soil environments playing a major role in nutrient cycling in these habitats. We studied the dominant bacterial composition from nine soil profiles located on Livingston Island, Antarctica. Two vegetated sites (moss-covered) and seven mineral soil sites were analysed. Total carbon (TC) and total ni...

Em Dezembro de 2006 foi instalado na proximidade da Base Antárctica Búlgara St. Kliment Ohridski (Ilha Livingston, Antárctida) um sítio de monitorização da camada activa de acordo com o protocolo CALM-S (Circumpolar Active Layer Monitoring Program – Southern Hemisphere). A análise dos dois anos de dados expõe a relação entre as temperaturas do ar e...

The Antarctic Peninsula is one of Earth's regions experiencing a faster increase on temperatures, with Mean Annual Air Temperatures (MAAT) rising ca. 2.5 °C in the last 50 years. The northerly location of the Antarctic Peninsula in respect to the Antarctic and its oceanic setting originate a milder and moister climate than in the Antarctic continen...

The age of the sedimentary sequences of Hurd Peninsula (here referred to the Miers Bluff Formation (MBF)), has been considered so far as Triassic, coeval of the Trinity Group. Recently, a Tithonian ammonite species was found in a non-in situ block, coming from the lowermost unexposed part of the Formation. Our micropaleontological study reveals the...

The connections between the Antarctic Peninsula and Patagonia, here referred to as South America south of 44 degrees S,are analysed in the light of new geological information and hypotheses. The previously supposed existence of a continuous belt of Late Paleozoic accretionary complexes in the western margin of both Patagonia and the Antarctic Penin...

The first find of a macrofossil, the age-diagnostic Upper Tithonian ammonite Blanfordiceras sp. (aff. wallichi) is reported from the Miers Bluff Formation (MBF). The presence of this genus is indicative of the Antarctica-specific Blanfordiceras ammonite zone from the middle Upper Tithonian. This zone is an approximate time equivalent of the Mediter...

The sedimentary sequences outcropping in Hurd Peninsula, Livingston Island, are formally defined as members of the Miers Bluff Fonna­ tion (MBF): Johnsons Dock and Napier Peak Members and Moores Peak breccias. The lowermost strata (Johnsons Dock Member) are studied in detail, while the investigations of the upper part of the sedimentary sequences c...

Report on the Bulgarian activities in Antarctica as of 1995. Appended is a project for the expansion of the Bulgarian Antarctic base on Livingston Island.

First Bulgarian sketch of Livingston Island. Photos by Christo Pimpirev.

Bogota trough in the Cordillera Oriental of Colombia was an elongate NE/SW oriented Lower Cretaceous basin. It was one of the main depocentres in the northern Andes during earliest Cretaceous time. Six lithofacies and three facies associations are recognised, based on four detailed stratigraphic sections situated in the western portion of the troug...

The thickest and most widely exposed Lower Cretaceous lithostratigraphic unit in the Cordillera Oriental of the Colombian Andes is the Caqueza Group. Along the eastern margin of the Bogota trough, the group is formally subdivided into the Buenavista, Macanal, and Alto de Caqueza Formations. On the basis of ammonite assemblages, the age of the group...

The structural basement of Alexander Island consists of a wide belt of accretionary complex rocks, the LeMay Group (Bum 1984). This is overlain by ?Cretaceous-Tertiary calcalkalinevolcanic rocks (Bum 1981), and intruded by several slightly younger, but related, plutons (Care 1983). The Rouen Mountains batholith is a large group of these plutons whi...