scholarly journals PETROLEUM POTENTIAL OF SOURCE BEDS IN THE CUU LONG BASIN

2011 ◽  
Vol 14 (4) ◽  
pp. 31-45
Author(s):  
Luan Thi Bui
Keyword(s):  
Organic Matter ◽  
Great Part ◽  
Source Rocks ◽  
Accumulation Process ◽  
Upper Eocene ◽  
North West ◽  
North East ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
Inclined Slope

In the Cuu Long basin, three source beds are identified: lower Miocene, Upper Oligocene, upper Eocene + lower Oligocene. They are separated from each other by sand-clay layers. Only Upper Oligocene and Upper Eocene + Lower Oligocene source beds are two main source beds supplying a great part of organic matter into traps. Petroleum source potential of Upper Oligocene source bed (66.30 billion tons) is greater than Upper Eocene + Lower Oligocene bed (29.88 billion tons). Total amount of hydrocarbon has ability to take part in accumulation process at the petroleumbearing traps from Upper Oligocene and Upper Eocene + Lower Oligocene source beds is over 2.19 billion tons and below 1.16 billion tons respectively. Thus, in whole CuuLong basin, source rocks have capacity to produce 96.18 billion tons of hydrocacbon in which accumulation is 3.35 billion tons making up 3.35% production quantity. Applying Monte - Carlo simulation method, using Crystal Ball software to calculate production potential and total amount of organic matter taking part into migration and accumulation process give rather appropriate result with difference level ≤ 1.25%.. Prospecting levels are in the following order: (i)Central lift zone has the greatest prospects, next is Dong Nai lift zone, graben located in north west inclined slope, south east inclined slope, north east area of Tam Dao lift zone finally. (2)Petroleum does not only accumulate in structural, combination traps but also in non-structural traps.

Biochronological significance of Amynodontidae (Mammalia, Perissodactyla) from the Paleogene of Kazakhstan

1996 ◽  
Vol 70 (4) ◽  
pp. 691-696 ◽  
Author(s):  
Spencer G. Lucas ◽  
Robert J. Emry
Keyword(s):  
Aral Sea ◽  
Close Similarity ◽  
Lake Basin ◽  
Upper Eocene ◽  
Lower Oligocene ◽  
Upper Oligocene

Five taxa of amynodontid rhinoceroses have been named from Kazakhstan. We consider only two of these valid, and recognize three amynodontid taxa from Paleogene deposits in Kazakhstan: Cadurcodon ardynensis (=Cadurcodon zaisanensis; =Amynodon tuskabakensis) from the upper Eocene (Ergilian)-lower Oligocene (Shandgolian) of the Zaysan basin, Zaisanamynodon borisovi, from the Ergilian of the Zaysan basin and Cadurcodon kazakademius, from Shandgolian strata in the vicinity of the Chelkar-Teniz lake basin. Gigantamynodon akespensis, from the upper Oligocene north of the Aral Sea is a rhinocerotid, not an amynodontid. Close similarity of the amynodontids of Kazakhstan to those of Mongolia and China supports direct correlation of Ergilian and Shandgolian strata across Asia.

scholarly journals The Romanian Map of Organic Pollution from Domestic Wastewaters � Seasonal Variations of Anionic Surfactants And Organic Load (COD)

2020 ◽  
Vol 71 (4) ◽  
pp. 317-324
Author(s):  
Daniel Mitru ◽  
Gheorghe Nechifor ◽  
Stefania Gheorghe ◽  
Iuliana Paun ◽  
Lucian Ionescu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Anionic Surfactants ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Organic Pollution ◽  
Organic Load ◽  
Spatial And Temporal Variation ◽  
North West ◽  
North East

Surfactants represent the major class of chemicals used in the composition of detergents where the predominant groups are anionic surfactants. Because of the large utilization of detergents in different activities (agricultural, industrial, domestic) an important amount of surfactants can accumulate in the domestic and industrial wastewaters, that are discarded to wastewater-treatment plants (WWTP). Furthermore, surfactants could affect the process of biological wastewater treatment due the inhibition of activated sludge and subsequently the water bodies quality through discharge of WWTPs` effluents. In addition, the soil quality decreased through various modes of sludge applied. The concentrations of organic matters discharged in the wastewater systems from Romania have raised the attention of environmental authorities regarding the toxic impact of their components such as anionic surfactants on the environment. The present paper proposed to highlight the background of organic pollution from Romania through the monitoring of the organics amount in water by Chemical Oxygen Demand (COD) and by the specific indicator � Anionic Surfactants (AS). Temporal (winter, spring and summer, 2019) and spatial (six areas: West, North-West, North-East, East, South and South-West) monitoring of organic matter was performed. It has been found that the spatial and temporal variation of AS concentrations were well correlated with COD load, leading to the conclusion that surfactants represented an important part of the global organic matter.

Stratigraphy of the Lower Tertiary formations of Panjab Himalayas

1968 ◽  
Vol 105 (5) ◽  
pp. 421-430 ◽  
Author(s):  
R. S. Chaudhri
Keyword(s):  
North American ◽  
Upper Eocene ◽  
Lower Miocene ◽  
Lower Tertiary ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
Tertiary System

SUMMARYLower Tertiary rocks of the Panjab Himalayas are classified under the Lower Tertiary System which comprises the Subathu Series (Upper Palaeocene-Eocene), the Dagshai Series (Upper Eocene-Lower Oligocene) and the Kasauli Series (Upper Oligocene-Lower Miocene). There is perfect stratigraphic harmony between the Subathus and the Dagshais, and the latter, in turn, grade into the Kasauli Series.Correlation of the Lower Tertiary rocks of India, Pakistan and Burma and their European and North American equivalents is tabulated.

scholarly journals MATURE ZONE OF ORGANIC MATTER AND OIL AND GAS PROCESS OF CUU LONG BASIN

2009 ◽  
Vol 12 (6) ◽  
pp. 60-72
Author(s):  
Luan Thi Bui
Keyword(s):  
Organic Matter ◽  
Oil And Gas ◽  
Vitrinite Reflectance ◽  
Gas Oil ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
Geochemical Parameters ◽  
Wet Gas ◽  
Rock Eval ◽  
Mature Process

Geochemical parameters used popularly to define the level of maturation of organic matter are a vitrinite reflectance % Ro) combined with Tmax value defined at the peak Pic S2 by Pyrolysis (Rock-Eval). Moreover, model TTI method of Lopatin and Waple is applied to define the level of maturation of organic matter at any point where there is no well. By this way, mature process of organic matter will be estimated generally for a whole of study area. Results are that organic matters of lower Oligocene and upper Eocene formation and the bottom of upper Oligocene formation provide essentially oil and gas of Cuu Long basin. The bottom of lower Oligocene and the top of Eocene formation supplement wet and Condensat. Eocene formation at the depressions especially in the east and north BachHo is the dry gas. Oil and gas generated and migrated into traps occurred from early Miocene, but very intensively generated and migrated in period of Pliocene + Quaternary times. At the same time, the traps always are supplemented the wet gas, condensate and dry gas from Eocene formation.

scholarly journals The upper Eocene-Oligocene carnivorous mammals from the Quercy Phosphorites (France) housed in Belgian collections

2020 ◽  
Vol 24 (1-2) ◽  
pp. 1-16
Author(s):  
Floréal SOLÉ ◽  
Valentin FISCHER ◽  
Julien DENAYER ◽  
Robert P. SPEIJER ◽  
Morgane FOURNIER ◽  
...  
Keyword(s):  
20Th Century ◽  
Natural Sciences ◽  
Geographical Information ◽  
Early 20Th Century ◽  
Upper Eocene ◽  
Faunal Turnover ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
Grande Coupure ◽  
Evolution Of Mammals

The Quercy Phosphorites Formation in France is world famous for its Eocene to Miocene faunas, especially those from the upper Eocene to lower Oligocene, the richest of all. The latter particularly helped to understand the ‘Grande Coupure’, a dramatic faunal turnover event that occurred in Europe during the Eocene-Oligocene transition. Fossils from the Quercy Phosphorites were excavated from the middle 19th century until the early 20th century in a series of sites and became subsequently dispersed over several research institutions, while often losing the temporal and geographical information in the process. In this contribution, we provide an overview and reassess the taxonomy of these barely known collections housed in three Belgian institutions: the Université de Liège, KU Leuven, and the Royal Belgian Institute of Natural Sciences. We focus our efforts on the carnivorous mammals (Hyaenodonta and Carnivoramorpha) and assess the stratigraphic intervals covered by each collection. These fossils are derived from upper Eocene (Priabonian), lower Oligocene (Rupelian), and upper Oligocene (Chattian) deposits in the Quercy area. The richness of the three collections (e.g., the presence of numerous postcranial elements in the Liège collection), the presence of types and figured specimens in the Leuven collection, and some identified localities in the RBINS collection make these collections of great interest for further studies on systematics and the evolution of mammals around the ‘Grande Coupure’.

scholarly journals A New Porphyry Mo Mineralization at Aisymi-Leptokarya, South-Eastern Rhodope, North-East Greece: Geological and Mineralogical Constraints

Geosciences ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 435 ◽  
Author(s):  
Evangelos Galanopoulos ◽  
Panagiotis Voudouris ◽  
Constantinos Mavrogonatos ◽  
Paul Spry ◽  
Craig Hart ◽  
...  
Keyword(s):  
Base Metals ◽  
Upper Eocene ◽  
North West ◽  
Quartz Veins ◽  
South Eastern ◽  
North East ◽  
Dike Complex ◽  
Ore Minerals ◽  
Metallogenic Zone ◽  
Back Arc

A new porphyry Mo prospect has been discovered in the Aisymi-Leptokarya area, along the southern margin of the Byala Reka–Kechros metamorphic dome, south-eastern (SE) Rhodope metallogenic zone. The study area is dominated by an Oligocene felsic dike complex, which hosts the porphyry Mo mineralization and intrudes into upper Eocene sandstones-marls and the Leptokarya monzodiorite pluton. The Aisymi-Leptokarya felsic dike complex displays a rhyodacitic to dacitic composition with post-collisional affinities. The porphyry Mo mineralization occurs in the form of porphyry-style quartz stockworks in the felsic dike complex associated with potassic alteration characterized by hydrothermal K-feldspar. The ore minerals consist mainly of pyrite, molybdenite, kesterite, bismuthinite and galena within both the stockwork and the rock matrix. Bulk ore analyses indicate enrichment in Mo (up to 215 ppm), Se (up to 29 ppm), Bi (up to 8 ppm) and Sn (up to 14 ppm) in the porphyry quartz veins. Late-stage, north-east (NE-) and north-west (NW-)trending milky quartz intermediate-sulfidation epithermal veins with base metals, crosscut previous vein generations and are characterized by Ag, Sn and Te anomalies. The Aisymi-Leptokarya porphyry Mo prospect is set in a back-arc geotectonic regime and shares similarities to other post-subduction porphyry molybdenum deposits elsewhere.

Stratigraphic evolution and source rock potential of a Lower Oligocene to Lower–Middle Miocene continental slope system, Hellenic Fold and Thrust Belt, Ionian Sea, northwest Greece

2013 ◽  
Vol 151 (3) ◽  
pp. 394-413 ◽  
Author(s):  
A. MARAVELIS ◽  
G. MAKRODIMITRAS ◽  
N. PASADAKIS ◽  
A. ZELILIDIS
Keyword(s):  
Organic Matter ◽  
Source Rock ◽  
Middle Miocene ◽  
Oil And Gas ◽  
Source Rocks ◽  
Geochemical Data ◽  
Thrust Belt ◽  
Lower Oligocene ◽  
Geochemical Parameters ◽  
Fold And Thrust Belt

AbstractThe Western flanks of the Hellenic Fold and Thrust Belt are similar to the nearby prolific Albanian oil and gas provinces, where commercial volumes of oil have been produced. The Lower Oligocene to Lower–Middle Miocene slope series at this part of the Hellenic Fold and Thrust Belt provides a unique opportunity to evaluate the anatomy and source rock potential of such a system from an outcrop perspective. Slope progradation is manifested as a vertical pattern exhibiting an increasing amount of sediment bypass upwards, which is interpreted as reflecting increasing gradient conditions. The palaeoflow trend exhibits a western direction during the Late Oligocene but since the Early Miocene has shifted to the East. The occurrence of reliable index species allowed us to recognize several nannoplankton biozones (NP23 to NN5). Organic geochemical data indicate that the containing organic matter is present in sufficient abundance and with good enough quality to be regarded as potential source rocks. The present Rock-Eval II pyrolytic yields and calculated values of hydrogen and oxygen indexes imply that the recent organic matter type is of type III kerogen. A terrestrial origin is suggested and is attributed to short transportation distance and accumulation at rather low water depth. The succession is immature with respect to oil generation and has not experienced high temperature during burial. However, its eastern down-slope equivalent deep-sea mudstone facies should be considered as good gas-prone source rocks onshore since they may have experienced higher thermal evolution. In addition, they may have improved organic geochemical parameters because there is no oxidization of the organic matter.

Iheringinucula, a new genus of the family Nuculidae (Mollusca: Bivalvia) from the Tertiary of Patagonia (Argentina)

1996 ◽  
Vol 70 (6) ◽  
pp. 935-940 ◽  
Author(s):  
Claudia J. del Río ◽  
Horacio H. Camacho
Keyword(s):  
New Species ◽  
New Genus ◽  
Late Eocene ◽  
Early Miocene ◽  
Upper Eocene ◽  
Lower Miocene ◽  
Lower Oligocene ◽  
Upper Oligocene ◽  
The Family

Iheringinucula, a new Tertiary genus of the family Nuculidae, is proposed. This taxon is known only from the Patagonian region (Argentina), and its range is from the late Eocene to the early Miocene. Two species are known: Iheringinucula tricesima (Ihering) from the Monte León Formation (upper Oligocene-lower Miocene) and Iheringinucula crassirugata new species from the San Julián Formation (upper Eocene-lower Oligocene?) and the Monte León Formation.

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