Ultimate morphological changes before the end-permian extinction: Changhsingian smaller foraminifera from the southern biofacies belt in Turkey

Download

index.pdf

Date

2016-06-02

Author

Altıner, Demir
Altıner, Sevinç
Atasoy, Serdar Görkem

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

168
views

29
downloads

The Changhsingian of the Southern Biofacies Belt in Turkey is widely distributed in the Arabian Platform and in the Geyik Dagi and Aladag tectonic units and the Antalya Nappes of the Anatolide-Tauride Block. From non-fusulinoidean Fusulinata two distinct evolutionary trends, both belonging to the family Globivalvulinidae, occur in the Changhsingian. In the globivalvulinin trend, Paraglobivalvulina originated from Globivalvulina vonderschmitti close to the Capitanian-Wuchiapingian boundary commonly occurs in the latest Permian. Among the other descendants in this stock, Charliella, seems to have gone extinct at the Wuchiapingian-Changhsingian boundary and Urushtenella derived from Paraglobivalvulina occurs rarely in the Changhsingian. From the Septoglobivalvulina-Paraglobivalvulinoides lineage Paraglobivalvulinoides is rather rare and sporadic. One of the most remarkable evolutionary trends in the Southern Biofacies Belt is in the dagmaritin-type globivalvulinids. Paradagmarita, derived from Crescentia very close to the Wuchiapingian-Changhsingian boundary, comprises three distinct species (P. monodi, P. flabelliformis, P. planispiralis) in the Changhsingian. A new genus originated from Paradagmarita in the younger levels of the Changhsingian is characterized by a hook-shaped apertural flap protecting partly the apertural system. In addition, Paradagmacrusta derived from Paradagmarita close to the Wuchiapingian-Changhsingian boundary and Louisettita originated from Dagmarita in the late Wuchiapingian commonly occur in the Changhsingian.In the Southern Biofacies Belt, although Nodosariata occurs abundantly, colaniellids are totally absent. Syzraniidae, Protonodosariidae, Geinitzinidae, Robuloididae, Frondinidae and Pachyphloiidae frequently occur. From robuloidids, the genus Robuloides is frequent and displays distinct morphological variations close to the Permian-Triassic boundary.Several genera belonging to Miliolata, such as Agathammina, Hemigordius, Midiella, Neodiscus, Multidiscus, Neodiscopsis and Glomomidiellopsis occur rarely to commonly in the Changhsingian of the Southern Biofacies Belt. Among these taxa, distinct evolutionary changes occurred in the populations of Glomomidiellopsis (G. uenoi, G. lysitiformis). The genus Kamurana s.s. was probably derived from Glomomidiellopsis in the late Changhsingian.

URI

https://hdl.handle.net/11511/98078

Conference Name

International Congress on Palaeozoic Stratigraphy of Gondwana

Collections

Department of Geological Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Tectonic evolution of the Cretaceous Ankara Ophiolitic Melange during the Late Cretaceous to pre-Miocene interval in Central Anatolia, Turkey Rojay, Fuat Bora (2013-04-01) The chaotic tectonic belt, which is distinguished in northern Anatolia, is called the - Ankara Accretionary Complex - in the Ankara region, central Anatolia. The belt is differentiated into three imbricated tectonic subbelts, namely, pre-Triassic metamorphics, Melange with calcareous blocks and Cretaceous melange with ophiolitic blocks (Ankara Ophiolitic Melange).
Evaluation of GRACE based groundwater storage change information at Konya Closed Basin Turkey using remote sensing and in situ measurements Yılmaz, Koray Kamil; Yılmaz, Mustafa Tuğrul (null; 2016-12-12) The Konya Closed Basin (KCB) located in Central Anatolia, Turkey, is the primary grain producer in Turkey and covers an area of approximately 50000km2. The lack of sufficient surface water resources and recently changing crop patterns have led to over-exploitation of groundwater resources and resulted in significant drop in groundwater levels. For this reason monitoring of the groundwater storage change in this region is critical to understand the potential of the current water resources and to devise effec...
Foraminiferal biostratigraphy and sequence stratigraphy across the mid-Carboniferous boundary in the Central Taurides, Turkey Atakul-Ozdemir, Ayse; Altıner, Demir; Altıner, Sevinç; Yılmaz, İsmail Ömer (Springer Science and Business Media LLC, 2011-10-01) The Aladag Unit is one of the main tectonic units in the Tauride Belt, located in southern Turkey. It includes a continuous Paleozoic carbonate sequence encompassing the mid-Carboniferous boundary, with outcrops being especially well exposed in the Hadim region. The boundary succession lithology is mainly composed of carbonates with intercalated quartz arenitic sandstone layers. Based on foraminifers, four biostratigraphic zones have been defined in the interval from the Upper Serpukhovian to the Lower Bash...
Neotethyan ophiolitic rocks of the Anatolides of NW Turkey and comparison with Tauride ophiolites Onen, AP (2003-11-01) The Izmir-Ankara-Erzincan zone in Turkey is part of the Anatolide belt. In NW Anatolia, near Kutahya, the ophiolitic rocks within the Izmir-Ankara-Erzincan suture zone have a tholeiitic character and oceanic back-arc chemistry. Amphibolites form a metamorphic sole to part of the ophiolite in the Kutahya region and yield an Ar-40/Ar-39 age of 93 +/- 2 Ma, interpreted to record high-grade metamorphism and intraoceanic thrusting of pre-existing ocean crust. Gabbros and dykes yield Ar-40/Ar-39 ages of 94 +/- 13...
Spatial variations of active stress patterns and frequencymagnitude distribution of earthquakes in Western Anatolia, Turkey Shah, S Tanvir; Özacar, Atilla Arda (null; 2018-04-23) Western Anatolia is one of the most important tectonic elements of Turkey, and constitutes the eastern margin of Aegean Extensional Province. The area is one of the most seismically active continental margins around the globe experiencing N-S extension. Earthquake data in this study is used to analyze the active stress patterns and to estimate the earthquake return periods for different sub-regions in western Anatolia. Focal mechanism solution data is used for determining the orientations and ratios of prin...

Citation Formats

D. Altıner, S. Altıner, and S. G. Atasoy, “Ultimate morphological changes before the end-permian extinction: Changhsingian smaller foraminifera from the southern biofacies belt in Turkey,” presented at the International Congress on Palaeozoic Stratigraphy of Gondwana, Perugia, İtalya, 2016, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/98078.