Marin Ivanov Ivanov

Marin Ivanov Ivanov
Sofia University "St. Kliment Ohridski" · Department of Geology and Paleontology

PhD

About

77
Publications
14,066
Reads
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588
Citations
Citations since 2016
7 Research Items
250 Citations
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
Additional affiliations
October 2014 - present
Sofia University "St. Kliment Ohridski"
Position
  • Professor (Full)
October 2011 - January 2014
Sofia University "St. Kliment Ohridski"
Position
  • Head of Faculty
July 1997 - September 2014
Sofia University "St. Kliment Ohridski"
Position
  • Professor (Associate)

Publications

Publications (77)
Article
Full-text available
The study represents new data about chronostratigraphic range of the Emine flysch Formation in its type section at the Black Sea coast near the “Irakli” touristic resort. In the highest stratigraphic levels, calcareous nannofossils of NP 10 Rhomboaster bramlettei zone have been documented, supporting early Eocene age for the formation. These new fi...
Article
Full-text available
Calcareous nannofossil, calpionellid and ammonite occurrences have been directly constrained across the Jurassic–Cretaceous boundary interval in the section of Kopanitsa, SW Bulgaria. This section reveals a continuous and expanded sedimentary record through the Upper Tithonian and Lower Berriasian, besides an excellent calcareous nannofossil and am...
Data
The Artadi section. Overturned uppermost Danian interval including the Danian/Selandian boundary
Article
Full-text available
The Byers Group, exposed on the Byers Peninsula (Western Livingston Island, Antarctica), comprises thick Upper Jurassic-Lower Cretaceous sedimentary and volcanic succession, deposited in marginal fore-arc environments. The mudstones and coarse-grained sandstones of the Devils Point Formation and the President Beaches Formation, which are the most f...
Article
Full-text available
The Byers Group, exposed on the Byers Peninsula (Western Livingston Island, Antarctica), comprises thick Upper Jurassic{Lower Cretaceous sedimentary and volcanic succession, deposited in marginal fore-arc environments. The mudstones and coarse-grained sandstones of the Devils Point Formation and the President Beaches Formation, which are the most f...
Article
Full-text available
Euendolithic microorganisms (boring endoliths) syn-vivo associated with modern corals are commonly reported, but their fossil record is extremely rare. This paper reports the new finding recognized in the colonial scleractinian coral Clausastrea saltensis from the Upper Barremian of Bulgaria. Large microborings (up to 50 μm, most ca. 15-25 μm in di...
Conference Paper
Full-text available
We present an integrated cyclo-magnetostratigraphy, nannofossil biostratigraphy, sequence stratigraphy and quantitative calcareous nannofossil study for the Upper Maastrichtian interval of two distant hemipelagic sections: Sopelana, Basque Basin and Bjala, Bulgaria. Both sections display similar rhythmic sedimentary successions imprinted by astrono...
Article
Sediments of Early Aptian age in Bulgaria can be assigned to four different facies: platform carbonates (Urgonian complex), shallow-water siliciclastics, hemipelagic and flyschoid siliciclastics. The taxonomic analysis of the ammonite faunas of 18 sections from these four different facies resulted in a revision of the existing ammonite zonation sch...
Article
Full-text available
Terra Nova, 24, 477–486, 2012 The early Cenozoic, which is punctuated by several negative carbon isotope excursions (CIEs), was a time of climatic and oceanographic transition from ‘Greenhouse’ to ‘Icehouse’ conditions. The occurrence of a ∼0.5‰ CIE starting at the top of Chron C27n (TC27N) is reconfirmed with stable isotope data from Zumaia (Spain...
Data
Full-text available
The early Cenozoic, which is punctuated by several negative carbon isotope excursions (CIEs), was a time of climatic and oceanographic transition from “Greenhouse” to “Icehouse” conditions. The occurrence of a ~0.5‰ CIE starting at the top of Chron C27n (TC27N) is reconfirmed with stable isotope data from Zumaia (Spain), and Bjala (Bulgaria) locali...
Article
Full-text available
Diversified and abundant corals of the suborder Pachythecaliina (order Hexanthiniaria) are described from Upper Barremian, biostromal reefs of the Emen Formation, Lovech Urgonian Group, north central Bulgaria. The corals are mostly of the phaceloid growth form and represent 14 species (six new), 12 genera (three new), belonging to five families. Pa...
Data
Full-text available
The early Cenozoic, which is punctuated by several negative carbon isotope excursions (CIEs), was a time of climatic and oceanographic transition from “Greenhouse” to “Icehouse” conditions. The occurrence of a ~0.5‰ CIE starting at the top of Chron C27n (TC27N) is reconfirmed with stable isotope data from Zumaia (Spain), and Bjala (Bulgaria) locali...
Article
Full-text available
The sediments from the basement of the Bulgarian Antarctic Base2 (BAB2) section were studied with the aim to determine organic matter compositions. Bitumen A and C and the total soluble organic matter (SOM) using a sequential extraction by chloroform and ethanol-benzene (1: 1) were analysed. The group compositions of the extracts, the types and amo...
Article
Mathesia darderi, a slender cylindrical monopleurid genus, formerly documented from the late Aptian–Albian of Spain, France, Tunisia, Algeria, Egypt and Turkey, has been discovered in the upper Barremian and the lower Aptian of Bulgaria and Spain. Notwithstanding some morphological changes, Barremian–lower Aptian forms and those of the upper Aptian...
Article
Full-text available
Two samples from the sediments of Sally Rocks section and from the basement of the Bulgarian Antarctic Base 1 (BAB1) section were under study. They were characterized by Rock-Eval pyrolysis. Vitrinite reflectance was determined as well. The content of bitumen A and C and soluble organic matter (SOM) were estimated using a sequential extraction by c...
Article
Full-text available
The lower parts of the Johnsons Dock Member sediments, Miers Bluff Formation were studied for organic matter quantification and characterization applying the Rock Eval pyrolysis and sequential extraction with chloroform and ethanol-benzene. Some indices such as the content of bitumens A and C, total soluble organic matter (SOM), group composition o...
Article
Full-text available
The development of orbital timescales has made notable and decisive steps in the last 10 years. The GTS2004 Geological Time Scale included an astronomical tuned timescale comprising the entire Neogene (i.e back to �23 Ma). Tuning for older ages is hampered by inaccuracy of the numerical solutions for the Solar System despite the advent of full nume...
Article
Full-text available
The Upper Cretaceous sediments in Krayshte area are reported to have a wider distribution than previously considered. They are dated using calcareous nannofossils, proving the presence of different parts of the Campanian Stage. Four new formal lithostratigraphic units are introduced and characterized. The Gorna Koznitsa Formation consists of coarse...
Article
Full-text available
Six samples from the sediments of the Miers Bluff Formation, Livingston Island, South Shetland Islands, Antarctica, were studied using the Rock-Eval pyrolyric method. The main parameters and indices, i. e. S1, S2, S3, HI, OI, S1/(S1 + S2) and Tmax, were determined. The vitrinite reflectance was determined on composite polished pieces applying an MP...
Article
Full-text available
A new formal lithostratigraphic unit - Damyanovo Formation, is defined in the Lower Cretaceous sediments of NW Bulgaria. Its lower and middle part is composed of rhythmic flysch alternation of sandstones, siltstones and silty marls, whereas the upper part is built up by rhythmic thin packets of sandy limestones and calcareous sandstones. Damyanovo...
Article
Full-text available
The Lower Cretaceous is of wide geographical distribution in Bulgaria, mainly in the northern and southwestern part of the country. Marine deposits predominate, with exception of the most northeastern part of the country, where paralic and continental deposits occur. The main part of the Lower Cretaceous sediments were deposited in shelf environmen...
Article
Full-text available
The upper part of Byala Formation is cropping out in a restricted area around Byala and Goritsa, East Bulgaria. It is studied in respect of calcareous nannofossils biostratigraphy. A complete set of nannofossils zones, spanning Selandian (NP5-NP6) and Thanetian (NP7-NP9) stage is documented. Therefore, the section at Byala is proved to be the compl...
Conference Paper
Full-text available
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...
Conference Paper
Full-text available
Detailed study and analysis of sedimentary sequences and calcareous nanofossil successions from three Bulgarian sections enables the precise location of the P/E boundary, as well as determination of the onset and end of the Paleocene-Eocene Thermal Maximum (PETM). Stable isotope data on the PETM interval (δ 13 C and δ 18 O) clearly show characteris...
Article
Full-text available
This study represents first attempt to juxtapose and correlate the zonal schemes of calcareous nannofossils and planktonic foraminifers in the Lower and Middle Paleocene of Bulgaria. The calibration of the two schemes is accomplished in the most complete and continuous sedimentary succession of Byala Fm., cropping out in the sections around the vil...
Article
The stratigraphic review and the dating, by means of planktonic foraminifera (Globotruncanidae, Heterohelicidae, “Globigerinidae”), of the main marine Maastrichtian and Paleocene series deposited, in Bulgaria (Fore-Balkan and Luda Kamcija zone), within three paleogeographic domains (foreland turbiditic trough: Emine Formation; hemipelagic basin: Bj...
Article
Full-text available
The Cretaceous-Tertiary (K-T) transition in eastern Bulgaria (Bjala) was analyzed in terms of lithology, mineralogy, stable isotopes, trace elements, and planktic foraminifera. The sequence represents a boreal-Tethyan transitional setting, spans from the last 300 k.y. of the Maastrichtian (zone CF1) through the early Danian (zones P0-Plc), and cont...
Article
Full-text available
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...
Chapter
Full-text available
The Cretaceous-Tertiary (K-T) transition in eastern Bulgaria (Bjala) was analyzed in terms of lithology, mineralogy, stable isotopes, trace elements, and planktic foraminifera. The sequence represents a boreal-Tethyan transitional setting, spans from the last 300 k.y. of the Maastrichtian (zone CF1) through the early Danian (zones P0-Plc), and cont...
Article
In this synthetic work are reconstructed seven paleogeographic maps corresponding to the main stages of the geodynamic evolution, from Barremian to Albian, along a complex segment of the North-Tethyan margin in Bulgaria. This reconstruction follows the recent publication of three paleogeographic maps related to the Berriasian - Hauterivian interval...
Article
Full-text available
IIntegrated stratigraphical, mineralogical, geochemical, sedimentological and paleontological studies have been carried out on several section across the Cretaceous-Tertiary (K/T) boundary in Bulgaria. The mineralogical content and the geochemical peculiarities of samples from the clay layer at and above the K/T boundary have been studied and discu...
Article
In the western Fore-Balkan (northwest Bulgaria), the characterization of numerous depositional sequences within the Barremian–Albian interval allows us to reconstruct from southeast to northwest the successive palaeogeographies of this part of the north Tethyan margin: two carbonate (Urgonian) platforms flanking a central terrigenous basin during t...
Article
The thick (2 000 m) siliciclastic-dominated synrifi series, which fills up most of the internal troughs of the Central Fore Balkan from Uppermost Tithonian to Valanginian, is subdivided into ten tectono- eustatic depositional sequences. The sequences consist of a coarse and voluminous low stand wedge (block complex, canyon-cone conglomerates, megas...
Article
The thick (2 000 m) siliciclastic-dominated synrift series, which fills up most of the internal troughs of the Central Fore Balkan from Uppermost Tithonian to Valanginian, is subdivided into ten tectonoeustatic depositional sequences. The sequences consist of a coarse and voluminous low stand wedge (block complex, canyon-cone conglomerates, megaslu...
Article
Along a Danube-Gabrovo cross-section, from Central Fore Balkan to Moesian Platform, the Barremian-Aptian deposits are distributed within three distinct paleogeographic domains: a central terrigenous: basin (Pleven-Polski Trămbeš) and, laterally (N: Danube, S: Gabrovo) two carbonate-dominated platforms where “Urgonian” fades can be well-developed. T...
Article
Along a Danube-Gabrovo cross-section, from Central Fore Balkan to Moesian Platform, the Barremian-Aptian deposits are distributed within three distinctpaleogeographic domains: a central terrigenous basin (Pleven-Polski Trǎmbeš) and, laterally (N: Danube, S: Gabrovo) two carbonate-dominated platforms where "Urgonian" facies can be well-developed. Th...