Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Planktonic foraminiferal biostratigraphy and microfacies analysis of the cenomanian-campanian succession in the Haymana-Polatlı Basin (Ankara, Turkey)
Download
index.pdf
Date
2017
Author
Sarıaslan, Nisan
Metadata
Show full item record
Item Usage Stats
253
views
233
downloads
Cite This
In order to establish the planktonic foraminiferal biostratigraphy of the Cenomanian- Campanian deposits in the Haymana-Polatlı Basin, a stratigraphic section of 93.5 meters was measured and 75 samples were collected. The stratigraphic section starts with limestones containing late Cenomanian rotaliporid and dicarinellid species and continues with early-middle Turonian aged clayey limestones with sporadic shale beds. These units are overlain by red colored Santonian limestones and shales containing abundant globotruncanids. The stratigraphic section ends with monotonous grey colored silty shales of the Campanian, whose silt content increases more towards the upper part. vi At the end of detailed taxonomic studies performed on both the washed material and thin sections of the samples, the distributions of planktonic foraminifera throughout the stratigraphic section were determined. Based on these findings, a biostratigraphic framework including 9 biozones and 2 subzones was established. In ascending order, the Rotalipora cushmani Zone - Dicarinella algeriana Subzone, Whiteinella archaeocretacea Zone, Helvetoglobotruncana helvetica Zone, Dicarinella asymetrica Zone - Globotruncanita elevata-Dicarinella asymetrica concurrent range Subzone, Globotruncanita elevata Zone, Globotruncana ventricosa Zone, Globotruncanella spp. Zone, Globotruncana aegyptiaca Zone and Gansserina gansseri Zone were identified. Moreover, the evolution of depositional environment reflected by the changing microfacies types through the stratigraphic section was revealed. The microfacies identified from bottom to top were Planktonic Foraminiferal Packstone, Radiolarian Packstone, Packstone with Planktonic Foraminifera and Radiolaria, Radiolaria-bearing Spiculite Packstone, Planktonic Foraminiferal Wackestone, Wackestone with Planktonic Foraminifera and Radiolaria, Silty Wackestone-Mudstone with Planktonic Foraminifera and Wackestone-Mudstone. The inability to determine the zones representing the late Turonian-Coniacian as well as the observation of an unconformity between the pre-Santonian and Santonian deposits were interpreted as the existence of a hiatus covering this time period.
Subject Keywords
Foraminifera.
,
Paleontology.
,
Foraminifera, Fossil.
,
Geology, Stratigraphic.
URI
http://etd.lib.metu.edu.tr/upload/12621300/index.pdf
https://hdl.handle.net/11511/26647
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Plankton biostratigraphy and magnetostratigraphy of the Santonian-Campanian boundary interval in the Mudurnu-Goynuk Basin, northwestern Turkey
Wolfgring, Erik; Wagreich, Michael; Dinares-Turell, Jaume; Yılmaz, İsmail Ömer; Bohm, Katharina (2018-07-01)
The Santonian-Campanian boundary interval close to the village of Goynuk in northwestern Turkey (Bolu province) was recorded and examined with respect to nannofossil and foraminiferal biostratigraphy, magnetic polarity and magnetic susceptibility. During the Late Cretaceous, the Mudurnu-Goynuk Basin was located on the Sakarya continent situated in the northwestern Tethyan Realm, north of the Neo-Tethys.
Planktonic foraminiferal biostratigraphy of the paleocene-eocene sequences in the western and central black sea region, Turkey
Güray, Alev; Altıner, Sevinç; Department of Geological Engineering (2014)
The Paleocene-Eocene sequences are widely distributed around onshore and offshore Black Sea. When the previous studies in the Turkish coasts of the Black Sea are considered, the deficiency of a detailed biostratigraphical framework attracts the attention. The taxonomy of the planktonic foraminifera and the benthic foraminifera assemblages are important for the establishment of the new biostratigraphical frame in the Paleocene-Eocene sequences of the Western and Central Black Sea regions. The Paleocene-Eocen...
Upper paleocene-lowermost eocene planktonic foraminiferal biostratigraphy and record of the paleocene-eocene thermal maximum in the Haymana Basin (Ankara, Turkey)
Tanık, Gamze; Altıner, Sevinç; Department of Geological Engineering (2017)
A rapid global warming event, called the Paleocene-Eocene Thermal Maximum (PETM), took place ca. 56 Ma, marking the Paleocene/Eocene boundary. This event is recorded by a turnover of planktonic foraminifera in deep marine settings, with occurrence of three species so-called planktonic foraminifera excursion taxa (PFET). This work was carried out in order to determine the record of this event in the Haymana Basin, Central Anatolia. The Haymana Basin provides a continuous sedimentary succession starting with ...
SEDIMENTATION-RATES IN THE SEA OF MARMARA - A COMPARISON OF RESULTS BASED ON ORGANIC-CARBON - PRIMARY PRODUCTIVITY AND PB-210 DATING
ERGIN, M; BODUR, MN; YILDIZ, M; EDIGER, D; EDIGER, V; YEMENICIOGLU, S; YUCESOY, F (Elsevier BV, 1994-10-01)
A large number of surficial sediment samples (75 grab samples, one boomerang core, four box cores) as well as primary productivity measurements have been used to estimate the rates of sediment accumulation in the Sea of Marmara; using an empirical expression for the relationship between surface productivity and organic carbon content of the sediment (MOLLER-SUESS formula). It was found that calculated low sedimentation rates occurred on the inner southern Marmara shelf (ave. 8 cm 1000 y-1) where the primary...
Seismic evidence of shallow gas in the sediment on the shelf off Trabzon, southeastern Black Sea
Okyar, M; Ediger, V (1999-04-01)
High-resolution seismic surveys carried out on the shelf off Trabzon (southeastern Black Sea) show that the sub-bottom stratigraphy consists of two main depositional sequences (A and B) one of which contains zones of acoustic turbidity. Of these, the upper depositional sequence (A) is thought to comprise Holocene sediments, while the lower depositional sequence (B) is interpreted as approximating to the Pleistocene. The boundary between these sequences is defined by a reflector (R), which is interpreted as ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
N. Sarıaslan, “Planktonic foraminiferal biostratigraphy and microfacies analysis of the cenomanian-campanian succession in the Haymana-Polatlı Basin (Ankara, Turkey),” M.S. - Master of Science, Middle East Technical University, 2017.