scholarly journals Dinantian lithostratigraphic units (Belgium)

2002 ◽  
Vol 4 (1-2) ◽  
pp. 69-94 ◽  
Author(s):  
Edouard POTY ◽  
Luc HANCE ◽  
Alan LEES ◽  
Michel HENNEBERT
Keyword(s):  
Carbonate Platform ◽  
The South ◽  
Third Order ◽  
Sedimentary Deposits ◽  
The North ◽  
Rugose Corals ◽  
Lithostratigraphic Units ◽  
Marine Facies ◽  
Sea Level Variations ◽  
Depositional Setting

Six paleogeographic sedimentation areas (s. a.) are recognized in the Namur-Dinant Basin: (1) the Hainaut s. a., (2) the Namur s. a., (3) the Condroz s. a., (4) the Dinant s. a., (5) the Visé-Maastricht s. a., and (6) the southern Avesnois s. a. (only in northern France). Together with the sea-level variations (third-order sequences), local controls influenced the nature of the sedimentary deposits, so the lithostratigraphic successions in each sedimentation area are distinctive. The depositional setting was that of a carbonate platform which evolved from a ramp in the early Tournaisian to a rimmed shelf during the early Viséan and then to a regionally extensive shelf during the middle and late Viséan. Before the Livian, open marine fades were developed to the south, but from the Livian onwards open marine facies were restricted to the north while evaporites developed in the south. This inversion of the normal pattern was probably related to an early phase of Variscan shortening. Dinantian biostratigraphy is mainly based upon foraminifera, rugose corals and conodonts. Fifty formations (including members), 3 groups and 2 informal lithostratigraphic units are briefly described.

scholarly journals 3D lithostratigraphic model of the Paleogene of the onshore part of the Moesian Platform (Northeast Bulgaria)

2018 ◽  
Vol 47 (1) ◽  
pp. 23-36
Author(s):  
Boris Valchev ◽  
Dimitar Sachkov ◽  
Sava Juranov
Keyword(s):  
Spatial Distribution ◽  
Sedimentary Rocks ◽  
Eastern Slope ◽  
The South ◽  
The North ◽  
Lithostratigraphic Units ◽  
Moesian Platform ◽  
Regional Tectonic ◽  
Model Database ◽  
The Individual

The Paleogene sedimentary rocks in the north-easternmost part of the territory of Bulgaria have been penetrated by numerous boreholes. In terms of regional tectonic zonation, the study area is a part of the onshore sector of the Moesian Platform, which partly includes the South Dobrogea Unit and the easternmost part of the North Bulgarian Dome with its eastern slope. The lithostratigraphy of the Paleogene successions consists of six formal units (the Komarevo, Beloslav, Dikilitash, Aladan, Avren, and Ruslar formations) and one informal unit (glauconitic marker). For compiling an overall conception of the regional aspects (lithology, thickness, spatial distribution, and relationships) of the individual lithostratigraphic units and for illustration of their spatial distribution, a 3D lithostratigraphic model based on reinterpretation of individual borehole sections has been created. The model database was compiled by integration of the original lithological data from 338 borehole sections.

scholarly journals Microfacies Architecture and Stratigraphic Development of the Yamama Formation, Southern Iraq

2019 ◽  
Vol 60 (5) ◽  
pp. 1115-1128
Author(s):  
Taisir Ghanem Zaki Al Mafraji ◽  
Aiad Ali Hussien Al-Zaidy
Keyword(s):  
Depositional Environment ◽  
The South ◽  
Third Order ◽  
The North ◽  
Open Sea ◽  
Sulaiy Formation ◽  
Maximum Flooding Surface ◽  
Cretaceous Period ◽  
Petrographic Study ◽  
Southern Iraq

The Yamama Formation belongs to the late Berriasian-Aptian succession, which was deposited during the Lower Cretaceous period within the main shallow marine depositional environment. Petrographic study and microfacies analysis enabled the recognition of six main microfacies for three association facies. These are the Semi-restricted, Shallow open marine and Shoal environments. The study succession represents deposition of three third order cycles, these cycles where deposited during successive episodes of relative sea level rises and still stand. The presence of shoal association facies (oolitic packstone microfaces) between the Sulaiy and Yamama formations refer to continue the deposition during the same stage, and may suggest the end of Sulaiy Formation was maximum flooding surface (mfs). The first stage started with occurrence of the shallow open marine association facies underlain by semi-restricted association and then shoal association facies. There are three cycles of this sequence consistently in the south of the study area, so that it continues to the lower part of the Ratawi Formation to be the upper contact of the Yamama Formation of a conformable and continuous in sedimentation To the north of the study area (near of Rf-1 and  Hf-5 wells) the shoal association was only shown once at the bottom of the Yamama Formation and these cycles to became unclear.  This suggest that the paleo-high was developed to the south of studied area, while the open sea was characterized the northern part.

scholarly journals Tectonic structure and volcanic centers at the eastern edge of the aegean volcanic arc around Nisyros island

2001 ◽  
Vol 34 (1) ◽  
pp. 289 ◽  
Author(s):  
D. PAPANIKOLAOU ◽  
P. NOMIKOU
Keyword(s):  
Volcanic Activity ◽  
Recent Volcanic Activity ◽  
Volcanic Area ◽  
The South ◽  
Tectonic Structure ◽  
General Direction ◽  
Volcanic Arc ◽  
Sedimentary Deposits ◽  
The North ◽  
Eastern Edge

The recent volcanic activity at the eastern edge of the Aegean Volcanic Arc is limited within a neotectonic graben structure which is developed in an E-W general direction between the alpine basement of Kos Island to the north and the alpine basement of Tilos Island to the south. In between the boundary faults of the neotectonic graben there is an extended volcanic area comprising several individual volcanic centers, which penetrate through the thick post-alpine sedimentary deposits of the graben.

scholarly journals DIAGENETIC FEATURES OF PALEO LAGOONAL REEF OF TACIPI AREA, SOUTH CELEBES

2016 ◽  
Vol 24 (2) ◽  
pp. 79
Author(s):  
Andri Slamet Subandrio
Keyword(s):  
Key Words ◽  
Carbonate Platform ◽  
Barrier Reef ◽  
The South ◽  
Fore Reef ◽  
The North ◽  
East And West

Limestone outcrops of the Tacipi area is an ideal carbonate platform part of Neogene East and West Sengkang Basin that are located in the south part of Sulawesi, precisely in western of Bone city. The limestones of this area, outcropping mainly on the north-south oriented hills such as Temapole, Anadara, Tamping, Lappa, etc., are the best reef example in the Tacipi area, as the reef itself, its debris and detritus can be distinguished in the field. Throughout the ridges and pinnacle in Tacipi field the limestones are predominantly homogenous boundstones on the top and detrital bioclastic packstones with local grainstones, and wackestones at the bottom. There are four major reef zonation indentified pacth reef, barrier reef, fore reef and lagoon. The extensive freshwater leaching of fossil fragments and calcareous cement give the preservation of biomouldic and vug pore spaces. Key words : limestones, reef, Tacipi Singkapan batugamping daerah Tacipi merupakan suatu paparan karbonat Neogen yang ideal di timur dan barat Cekungan Sengkan yang terletak di bagian selatan Sulawesi, tepatnya di sebelah barat kota Bone. Batugamping di daerah tersebut, terutama tersingkap berorientasi utara – selatan sejajar gunung-gunung seperti di Tempole, Anadara, Tamping, Lappa dan lain-lain, merupakan contoh terumbu terbesar di daerah Tacipi, sebagai bagian dari terumbu, sisa-sisa dan runtuhannya dapat dibedakan di daerah tersebut. Sepanjang punggungan dan puncaknya di daerah Tacipi, batugamping merupakan bagian utama dari lapisan pengikat yang homogen di bagian atas dan detrital bioklastik koral terpilah buruk dengan lokal struktur butiran secara setempat, dan struktur bioklastik laut pada bagian bawah. Ada empat zonasi utama terumbu yang telah identifikasi sebagai karang gosong, karang penghalang, karang depan dan lagun. Air tawar yang luas terlarut dari pecahan fosil dan semen mengandung zat kapur memberikan pengawetan terhadap jejak-jejak kehidupan dan pori-pori. Kata kunci : batugamping, terumbu, Tacipi

scholarly journals Hydrocarbon source rock sampling in Peary Land 1980

1981 ◽  
Vol 106 ◽  
pp. 99-103
Author(s):  
F Rolle
Keyword(s):  
Sedimentary Basin ◽  
Carbonate Platform ◽  
Early Carboniferous ◽  
Early Cambrian ◽  
The South ◽  
Hydrocarbon Source Rock ◽  
The North ◽  
Lower Palaeozoic ◽  
North Greenland ◽  
Land Region

The Peary Land region in North Greenland (fig. 31) contains a sequence of Lower Palaeozoic sediments which is probably more than 4 km thick (Dawes, 1976; Christie & Peel, 1977; Hurst, 1979; Christie & Ineson, 1979; Hurst & Surlyk, 1980; Ineson & Peel, 1980; Surlyk, Hurst & Bjerreskov, 1980). From Early Cambrian to Wenlock the area was divided into a northern turbidite trough and a southern, mainly carbonate platform (fig. 32). The platform seems to have undergone several phases of backstepping to the south, accompanied by expansion of the turbidite basin (fig. 32) (Surlyk et al., 1980). The region was affected by an orogeny of assumed Devonian - early Carboniferous age (Dawes, 1976). Deformation is most intense in northern Johannes V. Jensen Land (fig. 31), where an amphibolite facies is attained along the north eoast (Dawes & Soper, 1973) and decreases southwards, leaving the platform earbonates virtually undeformed. A separate, strongly block-faulted sedimentary basin, the Wandel Sea Basin is present in eastern Peary Land and farther to the south-east (Dawes & Soper, 1973; Håkansson, 1979). It eontains a sequenee of Upper Palaeozoie carbonates and Upper Palaeozoic - Mesozoic mainly coarse clastics more than 3 km thick.

scholarly journals DIAGENETIC FEATURES OF PALEO LAGOONAL REEF OF TACIPI AREA, SOUTH CELEBES

2016 ◽  
Vol 26 (2) ◽  
pp. 95
Author(s):  
Andri Slamet Subandrio ◽  
Ediar Usman
Keyword(s):  
Carbonate Platform ◽  
Barrier Reef ◽  
The South ◽  
Fore Reef ◽  
The North ◽  
East And West

Limestone outcrops of the Tacipi area is an ideal carbonate platform part of Neogene East and West Sengkang Basin that are located in the south part of Sulawesi, precisely in western of Bone city. The limestones of this area, outcropping mainly on the north-south oriented hills such as Temapole, Anadara, Tamping, Lappa, etc., are the best reef example in the Tacipi area, as the reef itself, its debris and detritus can be distinguished in the field. Throughout the ridges and pinnacle in Tacipi field the limestones are predominantly homogenous boundstones on the top and detrital bioclastic packstones with local grainstones, and wackestones at the bottom. There are four major reef zonation indentified pacth reef, barrier reef, fore reef and lagoon. The extensive freshwater leaching of fossil fragments and calcareous cement give the preservation of biomouldic and vug pore spaces. Abstract Limestone outcrops of the Tacipi area is an ideal carbonate platform part of Neogene East and West Sengkang Basin that are located in the south part of Sulawesi, precisely in western of Bone city. The limestones of this area, outcropping mainly on the north-south oriented hills such as Temapole, Anadara, Tamping, Lappa, etc., are the best reef example in the Tacipi area, as the reef itself, its debris and detritus can be distinguished in the field. Throughout the ridges and pinnacle in Tacipi field the limestones are predominantly homogenous boundstones on the top and detrital bioclastic packstones with local grainstones, and wackestones at the bottom. There are four major reef zonation indentified pacth reef, barrier reef, fore reef and lagoon. The extensive freshwater leaching of fossil fragments and calcareous cement give the preservation of biomouldic and vug pore spaces.

ANALYSIS OF WATER LEVEL OSCILLATIONS BY USING METHODS OF NONLINEAR DYNAMICS

2009 ◽  
Vol 23 (28n29) ◽  
pp. 5530-5542 ◽  
Author(s):  
P. CAPUANO ◽  
E. DE LAURO ◽  
S. DE MARTINO ◽  
M. FALANGA
Keyword(s):  
Adriatic Sea ◽  
American Continent ◽  
Third Order ◽  
North American Continent ◽  
The North ◽  
Nearest Neighbours ◽  
The World ◽  
Non Linear ◽  
Sea Level Variations ◽  
Type Data

Sea level variations collected in several areas in the world have been analyzed trying to infer their non linear characteristics. Analyzed data were acquired in several sites in West and East coasts of the North American continent, in the Hawaii and Bermuda islands, representing oceanic sites, and in Adriatic sea, representing a well known basin type. Data have been analyzed through Independent Component Analysis, False Nearest Neighbours and the estimation of correlation dimension using Grasberger and Procaccia integral. Results show a clear non linear features in all the sites, characterized by second and third order Landau mode.

scholarly journals The Navarana Fjord Member (new) - an Upper Llandovery platform derived carbonate conglomerate

1987 ◽  
Vol 133 ◽  
pp. 59-63
Author(s):  
F Surlyk ◽  
J.R Ineson
Keyword(s):  
West Coast ◽  
Carbonate Platform ◽  
The South ◽  
The North ◽  
Platform Margin ◽  
East And West ◽  
North Greenland ◽  
Important Marker

A new lithostratigraphical unit, the Navarana Fjord Member of latest Llandovery age, is formally erected in this paper. It consists of an up to 80 m thick sequence of amalgamated carbonate conglomerate beds. The member is presently known from the east and west coast of Navarana Fjord, central North Greenland. It rests or, Silurian carbonate platform to the south. To the north of the platform margin scarp it rests on and interfingers with turbidites of the Merqujôq Formation. The member is inc!uded in the Merquj6q Formation and forms an important marker reflecting the final foundering of the outer carbonate platform.

Two major Wisconsin lithostratigraphic units in southwest British Columbia

1977 ◽  
Vol 14 (7) ◽  
pp. 1471-1480 ◽  
Author(s):  
J. E. Armstrong ◽  
J. J. Clague
Keyword(s):  
British Columbia ◽  
The South ◽  
Glacial Sediments ◽  
The North ◽  
Lithostratigraphic Units ◽  
Head Formation ◽  
Sand And Gravel ◽  
Part Plant ◽  
North End

Two lithostratigraphic units, Quadra Sand and the Cowichan Head Formation, are overlain by Vashon till and associated glacial sediments and underlain by Dashwood and Semiahmoo drift deposits in coastal southwest British Columbia. Each unit is formally described and stratotypes are presented.Quadra Sand consists of cross-stratified, well-sorted sand, minor gravel, and silt deposited as outwash in front of glaciers advancing into the Georgia Depression at the beginning of the Fraser Glaciation. It is diachronous, deposition having commenced earlier than 29 000 years BP at the north end of the Georgia Depression but not until after 15 000 years BP at the south end of the Puget Lowland.The Cowichan Head Formation, deposited during the Olympia nonglacial interval, underlies Quadra Sand and consists of parallel-bedded silt, sand, and gravel, in part plant-bearing. The unit is divisible into a lower marine member and an upper fluvial and estuarine member.

Long-term Cyclic Variations of Prominences, Green and Red Coronae over Solar Cycles

2000 ◽  
Vol 179 ◽  
pp. 201-204
Author(s):  
Vojtech Rušin ◽  
Milan Minarovjech ◽  
Milan Rybanský
Keyword(s):  
Emission Lines ◽  
High Latitudes ◽  
Green Line ◽  
Solar Cycles ◽  
The South ◽  
Coronal Emission ◽  
Local Maxima ◽  
The North ◽  
Cyclic Variations

AbstractLong-term cyclic variations in the distribution of prominences and intensities of green (530.3 nm) and red (637.4 nm) coronal emission lines over solar cycles 18–23 are presented. Polar prominence branches will reach the poles at different epochs in cycle 23: the north branch at the beginning in 2002 and the south branch a year later (2003), respectively. The local maxima of intensities in the green line show both poleward- and equatorward-migrating branches. The poleward branches will reach the poles around cycle maxima like prominences, while the equatorward branches show a duration of 18 years and will end in cycle minima (2007). The red corona shows mostly equatorward branches. The possibility that these branches begin to develop at high latitudes in the preceding cycles cannot be excluded.

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