scholarly journals Bojongmanik Formation Sedimentation Mechanism in the Middle to Late Miocene (N9-N17) in the Rangkasbitung Basin

2020 ◽  
Vol 43 (3) ◽  
pp. 115-123
Author(s):  
Tety Syahrulyati ◽  
Vijaya Isnaniawardhani ◽  
Mega Fattima Rosana ◽  
Winantris Winantris
Keyword(s):  
Depositional Environment ◽  
Middle Miocene ◽  
Planktonic Foraminifera ◽  
Normal Fault ◽  
Upper Miocene ◽  
Delta Plain ◽  
Late Middle Miocene ◽  
Marine Facies ◽  
Environment Maps ◽  
Deep Site

The Rangkasbitung Basin, is a part of Banten Depression which was formed by a normal fault, and then fi lled by marine deposits. This research carried out to understand the sedimentation process of Middle Miocene Bojongmanik deposits, the age, paleoenvironment and lithology (sediment sequence). In this research, 55 samples were taken from the study area, approximately 595 km2. Measurement of the stratigraphic section is carried out to determine the correlation both vertically and horizontally. The residue of dissolving peroxide method was carried out during the samples preparation. Then genus and species of planktonic and benthonic foraminifera were identifi ed and determined. The foraminifera analysis guide has been used to determine the age and depositional environment. The sequences of Bojongmanik Formation were deposited in Middle to Upper Miocene (N9 to N17). Based on the planktonic foraminifera distribution, the succession of each sequence can be correlated. During Middle Miocene (N9 - N12), the lowest part of Bojongmanik Formation is deposited at 100m-200m and 100m-80m depth, while in the other site, the correlated sequence is recorded that deposited at 80m-20m depth (outer to edge of inner neritic facies). In late Middle Miocene (N13 - N14), the regression process was happened. Almost the succession was deposited on land, while in deep site, a less part of sediments was formed as land facies but the most of it deposited as marine facies. In Upper Miocene (N 15 - N 17), the sedimentation continued in the transitional to edge neritic in back mangrove to mangrove environmental setting (upper to lower delta plain), and in other sites the sediment is no longer formed. Based on distribution of benthonic foraminifera there are observed the biofacies changes laterally. In bathymetric of depositional environment maps it can be depicted two higher paleoenvironmental sites (Cigudeg and Muncang highs) and two lower sites (Leuwiliang and Jasinga basins).

scholarly journals The presence of marin Pliocene sendiments in the Mesohellenic Trough (Pramoritsa banks, Grevena, Greece)

2018 ◽  
Vol 34 (2) ◽  
pp. 603
Author(s):  
Ι. ΦΟΥΝΤΟΥΛΗΣ ◽  
Α. ΜΑΡΚΟΠΟΥΛΟΥ-ΔΙΑΚΑΝΤΩΝΗ ◽  
Α. ΜΠΑΚΟΠΟΥΛΟΥ ◽  
Ε. ΜΩΡΑΪΤΗ ◽  
Μ. Ρ. ΜΙΡΚΟΥ ◽  
...  
Keyword(s):  
Late Miocene ◽  
Depositional Environment ◽  
Systematic Sampling ◽  
Early Pliocene ◽  
Upper Miocene ◽  
Marine Facies ◽  
River Banks

Detailed lithostratigraphic study of the postalpine deposits that build Pramoritsa river banks - tributary of Aliakmonas river- north of Grevena (Greece), showed that the marine molassic deposition did not cease in the Upper Miocene but continued in the Lower Pliocene, too. Systematic sampling revealed abundant pelagic and benthic fossils, the presence of which {Bulimina exilis, Bulimina costata, Neogloboquadrina acostaensis, Globigerinella pseudobesa, Globoquadrina venezuelana, Neoeponides schreibersii, Pulleniatina obliquiloculata, Dorothia gibbosa) proves that marine facies went on, at least, until the Lower Pliocene and that the depositional environment was characterized as coastal with warm waters. According to the Nannoplankton flora correlated with standard nannoplankton -zones-subzones NNllb Amaurolithus delicatus, Discoaster quinqueramus) and NN13 (Ceratolithus rugosus) of MARTINI, 1971 and OKADA & BUKRY, 1980 during the Late Miocene -Early Pliocene. Besides, some characteristics of the Pliocene sediments are described, based on macro- and microscopic observations.

scholarly journals Dinoflagellate cysts from the Pannonian (late Miocene) "white marls" in Pécs-Danitzpuszta, southern Hungary

2021 ◽  
Vol 151 (3) ◽  
pp. 267-274
Author(s):  
Krešimir Krizmanić ◽  
Krisztina Sebe ◽  
Imre Magyar
Keyword(s):  
Late Miocene ◽  
Depositional Environment ◽  
Middle Miocene ◽  
Dinoflagellate Cysts ◽  
Middle Segment ◽  
Lake Pannon ◽  
Dinoflagellate Cyst ◽  
Upper Miocene ◽  
Reference Section

Dinoflagellate-cyst based biostratigraphy is an important tool in the stratigraphical subdivision and correlation of the Neogene Lake Pannon deposits. A total of 66 palynological samples were investigated from the Pannonian (upper Miocene) marl succession exposed in the Pécs-Danitzpuszta sand pit in order to evaluate the biostratigraphical assignment and constrain the age of the strata. Earlier attempts to recover dinoflagellate cysts from this important reference section had failed. In our material, six samples contained well-preserved palynomorphs. One sample from the lower part of the succession (D25) contained a probably reworked middle Miocene assemblage. Samples from the middle segment of the succession (D3, D2, D1) indicate the Pontiadinium pecsvaradensis Zone (ca. 10.8 to 10.6 Ma). Samples from the top of the marl (D219, D221) did not give additional stratigraphic information (P. pecsvaradensis Zone or younger). The palynofacies of samples D3 to D221 indicates a relatively distal, calm, occasionally oxygen-deficient, probably deep depositional environment.

Sources of organic carbon and depositional environment in the Bengal delta plain sediments during the Holocene period

Limnology ◽  
2009 ◽  
Vol 11 (2) ◽  
pp. 133-142 ◽  
Author(s):  
Hossain M. Anawar ◽  
Takahito Yoshioka ◽  
Eiichi Konohira ◽  
Junji Akai ◽  
M. C. Freitas ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Depositional Environment ◽  
The Holocene ◽  
Bengal Delta ◽  
Delta Plain ◽  
Holocene Period

scholarly journals Age determinations of Neogene sediments from the English Channel and Western Approaches

1986 ◽  
Vol 5 (1) ◽  
pp. 5-6
Author(s):  
D. Graham Jenkins ◽  
Erlend Martini
Keyword(s):  
Middle Miocene ◽  
Planktonic Foraminifera ◽  
English Channel ◽  
Calcareous Nannoplankton ◽  
Lower Miocene ◽  
Published Evidence ◽  
Neogene Sediments ◽  
Age Range ◽  
Age Determinations

Abstract. Original published evidence indicated an age range of early Lower Miocene to early Middle Miocene for Globigerina silt samples from the English Channel and the Western Approaches. Suggested younger ages for these samples are refuted on the basis of planktonic foraminifera and calcareous nannoplankton.

scholarly journals Palynological profile and depositional environment of the Ishim formation (upper Miocene) in Tobol-Ishim interfluve, Western Siberia

2019 ◽  
Vol 27 (6) ◽  
pp. 103-123
Author(s):  
O. B. Kuzmina ◽  
I. V. Khazina ◽  
P. V. Smirnov ◽  
A. O. Konstantinov ◽  
A. R. Agatova
Keyword(s):  
Late Pleistocene ◽  
Organic Substance ◽  
Late Miocene ◽  
Depositional Environment ◽  
Western Siberia ◽  
Ice Age ◽  
Quaternary Sediments ◽  
Upper Miocene ◽  
Neogene Sediments ◽  
First Time

For the first time some outcrops of the Upper Miocene Ishim Formation on the south of Tyumen Area near Pyatkovo, Masali and Bigila villages are studied by palynological method in detail. A series of mineralogical analyzes of these sediments and radiocarbon analysis of the Quaternary sediments overlying the Ishim Formation are done. Four palynocomplexes (PC) are established in the Ishim Formation: PC1 with Botryococcus; PC2 with Botryococcus, Sigmopollis; PC3 with Alnus, Polypodiaceae, Botryococcus, Sigmopollis; PC4 with Betula, Alnus, Corylus. The layers with PC1, PC2 и PC3 are traced in two outcrops near Masali and Bigila Villages. PC4 is revealed from the sands and aleuropelits of the outcrop near Pyatkovo Village, it is characterized by a significant content of diverse pollen of temperate termophylic broad-leafed taxa and by the presence of rare typical Miocene elements (Таxodiaceae, Nyssa, Tsuga). The PC3 and PC4 are compared with the complexes well known from the Neogene sediments of Western Siberia. PC5 with Betula, Herbae, Fungi is revealed from the bedded silts overlying the Ishim Formation in Masali outcrop. Previously, these sediments were attributed to the Late Miocene Pavlodar Formation. The composition and the structure of PC5 allowed making an assumption about Quaternary age of the enclosing sediments. Radiocarbon analysis of the organic substance from the silts showed, that these sediments were accumulated in the Late Pleistocene (Sartan Ice Age). For the first time the information about microphytoplankton (Botryococcus, Pediastrum, Zygnemataceae, Sigmopollis) and other nonpollen palynomorphs, contained in Ishim Formation (Upper Miocene) and in Pleistocene sediments, is given. On palynological data, some stages of development of the Late Miocene Ishim Basin and the type of vegetation surrounding this basin are considered. The depositional environment of Pleistocene sediments (Masali outcrop) is reconstructed.

scholarly journals An integrated approach to the coal deposits in the Mesohellenic Trough, Greece

2019 ◽  
Vol 54 (1) ◽  
pp. 34
Author(s):  
Nikolaos Koukouzas ◽  
Pavlos Krassakis ◽  
Petros Koutsovitis ◽  
Christos Karkalis
Keyword(s):  
Plant Material ◽  
Middle Miocene ◽  
Renewable Energy Sources ◽  
Spatial Relation ◽  
Integrated Approach ◽  
Parent Plant ◽  
Sustainable Solutions ◽  
Upper Miocene ◽  
Coal Deposits ◽  
Geological Map

A considerable amount of coal deposits occur within the Mesohellenic Trough in Greece. It is considered as the largest and most important basin of the last orogenic stage of the Hellenides, which is interpreted as a back-arc basin that evolved during the period of Late Oligocene to Miocene. In this study, a simplified geological map has been constructed emphasizing on the coal formation occurrences of the Mesohellenic Trough. This work has been accomplished, through Geographic Information Systems (GIS) and has been organized via geodatabase as GIS data files (feature classes). For the creation of the geological map suitable homogenization and discrete representation has been implemented different geological sheets, original source and traditional maps. Next step was the geostatistical analysis using polygonal methods linked to the corresponding tabular information. Regarding the stratigraphical age, and petrographic data related to geographic distribution of the coal occurrences, these are divided into three categories: Oligocene, Middle Miocene and Upper Miocene coals, exhibiting various physicochemical and topological properties. Upper Miocene coal exhibits the greatest area and perimeter values, while the lowest values correspond to those of the Middle Miocene. Terrain models such as aspect (angle-direction) and hillshade (shaded relief) showed the spatial relation between coal occurrences and morphotectonic as long as geometrical characteristics of the study area. Coals are mainly classified as huminites including mainly huminite group minerals (90%). Their S contents can probably derive from parent plant material or a combination of parent plant material with seawater sulfates. Moisture contents are strongly connected with the sustainability of the coal use in the energy production, while their carbonation grade is strongly associated with their age and expressed by their reflectivity values. All these data have been inserted in an integrated database and can be useful for pre-mining or post mining activities (e.g. planning, analysis, management, restoration). Results of this study are available for the effective evaluation of the existing coal occurrences, which can be used with renewable energy sources providing sustainable solutions, in combination with the upcoming innovative CCS and CCU technologies. Results also showed that coals from the Mesohellenic Trough present excellent quality traits. However, their value as combustible coal is very low due to the absence of economically recoverable reserves. The largest coal lenticular bodies have been extracted in the past and the remaining occurrences do not exceed several thousand tones. Based upon existing literature and from geospatial estimations, coal deposits in the Mesohellenic Trough Basin cannot be considered as economically valuable for exploitation.

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