scholarly journals Palynology of Lower Oligocene brown coal and lowermost Middle Miocene sand deposits from the Łukowa-4 borehole (Carpathian Foredeep, SE Poland) – implications for palaeogeographical reconstructions

2016 ◽  
Author(s):  
Przemysław GEDL ◽  
Elżbieta WOROBIEC ◽  
Barbara SŁODKOWSKA
Keyword(s):  
Brown Coal ◽  
Middle Miocene ◽  
Se Poland ◽  
Lower Oligocene ◽  
Carpathian Foredeep

MIDDLE MIOCENE DASHAVA FORMATION SANDSTONES, CARPATHIAN FOREDEEP, UKRAINE

2004 ◽  
Vol 27 (4) ◽  
pp. 373-388 ◽  
Author(s):  
I. Kurovets ◽  
G. Prytulka ◽  
Y. Shpot ◽  
T. M. Peryt
Keyword(s):  
Middle Miocene ◽  
Carpathian Foredeep

AROMATIC BIOMARKER FROM BROWN COAL, SANGATTA COALFIELD, EAST BORNEO OF MIDDLE MIOCENE TO LATE MIOCENE AGE

2016 ◽  
Vol 78 (6) ◽  
Author(s):  
Yulfi Zetra ◽  
Imam B. Sosrowidjojo ◽  
R. Y. Perry Burhan
Keyword(s):  
Aromatic Hydrocarbon ◽  
Organic Compounds ◽  
Brown Coal ◽  
Late Miocene ◽  
Middle Miocene ◽  
Coal Liquefaction ◽  
Low Calorie ◽  
Biomarker Analysis ◽  
Blending Process ◽  
High Calorie

A section of the Sangatta coalfield in the Balikpapan formation located in Kutai Basin, East Borneo, Indonesia, is the Inul area, located North of Pinang Dome. This section of the coalmine has coals with low calories (ca. 4379 cal/g), which is why they cannot be used optimally yet. The reasons of using low calorie coals are besides from being used as a mixing ingredient for the blending process of high calorie coals, they are also used to diversify the coals through the process of coal liquefaction (coal to liquid). In order for the coal liquefaction to be processed correctly, there needs to be a study on the geochemistry organics through coal biomarker analysis, particularly on the hydrocarbon aromatic fractions, so that the origins of the coal organic compounds could be known. Biomarker analysis on the aromatic hydrocarbon fraction shows the existence of naphthalene compound groups with sesquiterpenoids skeleton, phenanthrene with diterpenoids, sesterpenoids skeleton and triterpenoids aromatic pentacyclic. The existence of cadalene compound, triterpene pentacyclic monoaromatic, -triaromatic, -tetraaromatic, -pentaaromatic and triterpenoid C-ring cleaved hydrocarbon with oleanane, ursane and lupane skeletons indicated that the source of coal organic compounds were derived from b-amyrin which were produced by Angiospermae plants. The coal biomarkers distribution, particularly the high abundance of triterpenoid pentacyclic triaromatic compound, confirmed the low maturity of the coals which is predicted to profit from the process of liquefaction due to the high contents of their aromatic fractions.

An early heron (Aves, Ardeidae, Ardea) from the Middle Miocene of Nebraska

1986 ◽  
Vol 60 (4) ◽  
pp. 968-970 ◽  
Author(s):  
Jonathan J. Becker
Keyword(s):  
Brown Coal ◽  
Middle Miocene ◽  
Mining District ◽  
Large Species ◽  
Local Fauna ◽  
Fossil Species ◽  
Specific Identification ◽  
Upper Miocene ◽  
Living Species

The genus Ardea includes all living species of large herons. Brodkorb (1963) listed five fossil species of Ardea, and only one fossil species has since been described. Of these six, only two are unquestionably members of the genus Ardea. Ardea brunhuberi von Ammon, 1918, from the Upper Miocene Brown Coal Formation, Württemburg, Germany, was moved by Brodkorb (1980) to the Phalacrocoracidae as Phalacrocorax brunhuberi. Brodkorb (1980) considered A. lignitum Giebel, 1860, from the Sarmatian Brown Coal of Rippersroda, Thuringia, Germany, to be a large owl in the genus Bubo. Olson (1985) similarly regards A. perplexa from the Astaracian of Sansan, France, to be a large owl, possibly in the genus Bubo. The type of Ardea aureliensis Milne-Edwards, 1871, from the Oreleanian of Suevres, France, has never been illustrated or restudied and its affinities need to be confirmed (Olson, 1985). The valid fossil species are Ardea polkensis Brodkorb, 1955, from the late Hemphillian Bone Valley Mining District, Florida, and A. howardae Brodkorb, 1980, from the Plio/Pleistocene Shungura Formation, Omo Basin, Ethiopia. A large species of Ardea is also known from the late Clarendonian Love Bone Bed local fauna, Florida, but is based on material too fragmentary for specific identification (Becker, 1985). This note reports the earliest certain occurrence of Ardea now known.

scholarly journals The Late Eocene – Recent <i>Bradleya johnsoni</i> Benson lineage (Crustacea, Ostracoda) in the Central Equatorial Pacific

1988 ◽  
Vol 7 (2) ◽  
pp. 187-199 ◽  
Author(s):  
P. Lewis Steineck ◽  
David Yozzo
Keyword(s):  
Middle Miocene ◽  
Late Eocene ◽  
Equatorial Pacific ◽  
General Increase ◽  
Reticular Pattern ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
Central Equatorial Pacific ◽  
Stratigraphic Ranges ◽  
Direct Ancestor

Abstract. Three stratigraphically successive species of Bradleya Hornibrook, 1952 from abyssal sediments of the central equatorial Pacific (Leg 85, Deep Sea Drilling Project) form an unbranching evolutionary sequence designated as the B. johnsoni Benson lineage. These taxa are B. sp. 1 (Lower Oligocene), B. johnsoni (Upper Oligocene – Middle Miocene) and B. thomasi n. sp. (Upper Miocene – Recent). A shared synapomorphic character, the posterior bridge complex, establishes the kinship of these species. Their stratigraphic ranges and a traceable series of changes in the organisation and mass of the reticulum are consistent with the hypothesis of direct ancestor/descendant relationships between them. Bradleya johnsoni is distinguished from B. sp. 1 by the appearance of new primary muri in the posteroventral region and by a general increase in reticular mass. In B. thomasi, the overall reticular pattern is maintained but it becomes more delicate and less rectilinear. Each species of this lineage shows similar variation in the posteroventral reticulum.

scholarly journals Paleomagnetic analyses on Badenian–Sarmatian drill cores from the North Carpathian Foredeep (Middle Miocene, Poland)

2015 ◽  
Vol 461 (461) ◽  
pp. 179-192 ◽  
Author(s):  
Karin SANT ◽  
Arjan de LEEUW ◽  
Liao CHANG ◽  
Andrzej GĄSIEWICZ ◽  
Grzegorz CZAPOWSKI ◽  
...  
Keyword(s):  
Middle Miocene ◽  
The North ◽  
Carpathian Foredeep ◽  
Drill Cores
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