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Benthic foraminifera
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North of İstanbul, the thick Upper Cretaceous volcanic and volcanoclastic sequence of the Yemişliçay Group is nonconformably overlain by the neritic clastic and carbonate sequence of the Zekeriyaköy Formation. This unit, either placed within the volcanic sequence or interpreted to overlie it, was studied near Zekeriyaköy for its larger foraminifera, previously recurrently referred to as the Maastrichtian. The basal epiclastic sandstone beds of the Zekeriyaköy Formation immediately above the volcanic sequence contain Praesiderolites dordoniensis and rare rudist shells.
21p
tanmocphong
29-01-2022
13
1
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Rogerella aydimi Gallardo-Garcia and Serra-Kiel was described from the Priabonian Haluf Member of the Aydim Formation, Oman. Based on new finds from the Bartonian Hoya Formation of SE Turkey and the Jahrum Formation of Iran, its taxonomic status is discussed herein. It is concluded that it represents a species of Dictyoconus with a simple subepidermal network (1 rafter, 1 intercalary beam) below a thin epiderm. The stratigraphic range of D. aydimi known thus far is Bartonian-Priabonian or Shallow Benthic Zone 17– 20. The distribution of D.
11p
tanmocphong
29-01-2022
15
1
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The middle-upper Eocene Kırkgeçit Formation, the fossil content of which is the subject of this study, is deposited in a back-arc basin controlled by block-faulting. The Kırkgeçit basin is interpreted as being formed under an extensional regime related to convergence between the Anatolian plate in the north and the Arabian plate in the south.
21p
tanmocphong
29-01-2022
8
1
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The fauna collected associated with subfossil Lophelia pertusa and Dendrophyllia cornigera coral samples and hardgrounds from Albanian waters between 190–230 m is discussed. Eighty-three benthic species are recorded: 2 Foraminifera, 22 Porifera, 6 Cnidaria, 25 Mollusca, 14 Annelida, 1 Arthropoda, 12 Bryozoa, and 1 Echinodermata. Seventy-four species are new records for the poorly investigated Albanian deep waters.
12p
dolomite36
30-12-2021
7
0
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Bài viết giới thiệu kết quả nghiên cứu chi tiết về địa tầng của một số giếng khoan qua móng đá vôi bởi các tổ hợp hóa thạch trùng lỗ bám đáy (benthic foraminifera) và đặc điểm thạch học. Kết quả nghiên cứu cho thấy các thành tạo đá vôi chủ yếu là packstone, wackestone, mudstone chứa phong phú hóa thạch trùng lỗ đặc trưng cho thời kỳ Permian (Wuchiapingian - Changhsingian).
10p
vineji2711
19-05-2020
46
1
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The Upper Cretaceous carbonates on the Island of Hvar were deposited within the central Tethyan, intraoceanic Adriatic carbonate platform (s. str). The Upper Cretaceous stratigraphy of the platform has been described in detail from the neighbouring island of Brač.
11p
vidonut2711
09-11-2019
12
0
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The Ypresian to Priabonian Gubs river section, in the Adygean high of the northern slope of the Caucasus, is a rare locality, in which Ypresian–Lutetian representative larger benthic foraminifera coexist with planktonic Foraminifera and calcareous nannoplankton.
40p
vidonut2711
09-11-2019
12
2
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The shallow-marine Eocene Soğucak Limestone and Oligocene Ceylan Formation were studied in the northern and eastern parts of the Thrace Basin with detailed biometric analysis of the full spectrum of larger benthic foraminifera (mainly nummulitids and orthophragmines).
53p
vidonut2711
09-11-2019
10
2
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The marine strata of the Qom Formation south of Uromieh (Baranduz) yielded a moderately diverse larger benthic foraminiferal fauna resembling the fauna already described from European marine sequences. The fauna allowed the author to correlate the larger foraminiferal assemblage of northwestern Iran with the standard shallow benthic zonation.
10p
vidonut2711
09-11-2019
7
1
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This work demonstrates the potential of three-dimensional biometric quantification using microtomography on larger benthic foraminifera. We compare traditional linear and area measures used for calculating three-dimensional characters with actual 3D measurements made from volume images obtained using X-ray microtomography (microCT).
17p
vidonut2711
09-11-2019
11
0
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Sedimentary properties of the middle−upper eocene formations in Çardak, Burdur and İncesu, SW Turkey
The integration of sedimentological, palynological and palaeontological data in three diff erent outcrops in SW Turkey provides a clearer understanding of the palaeoenvironments in an area between the Çardak-Dazkırı Basin and the Isparta region during the Middle–Late Eocene. In this study, the Çardak-Dazkırı (Başçeşme Formation), Burdur (Varsakyayla Formation) and Isparta (Kayıköy Formation) areas have been studied for facies and facies associations.
39p
vidonut2711
09-11-2019
11
1
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The Oligocene-Miocene Asmari Formation was deposited in a carbonate ramp setting at the margin of the Zagros Basin in south-western Iran. The subsurface sedimentary successions of the Asmari Formation have been studied using cores from the Rag-eSafid oil field, in order to determinate their microfacies and sedimentary palaeoenvironments.
16p
vidonut2711
09-11-2019
13
1
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This work aims to study recent climatic oscillations and their influence on sedimentation in the Ria de Vigo, a coastal embayment in Galicia, NW Spain. It is based on the study of clay mineral assemblages, in conjunction with other proxies (granulometric, geochemical, geochronological and microfaunal), in the core KSGX 24. A Benthic Foraminifera High Productivity (BFHP) proxy was used to determine changes in the flux of organic matter (OM) at the bottom of the study area.
16p
vidonut2711
09-11-2019
9
0
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The distribution of selected shallow-benthic biota at circum-Tethyan carbonate platforms demonstrates an excellent proxy for the impact of latitudinally controlled cooling and variations in the trophic resources during the Palaeogene. In this study, we link and compare the spatial distribution and abundance of larger benthic foraminifera and hermatypic corals of Tethyan carbonate successions with new records from the Prebetic platform in SE Spain.
28p
vidonut2711
09-11-2019
9
1
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The Eocene marine sequence in the southern part of the Thrace Basin (NW Turkey) involves a variety of platform and deep-marine olistostromal units, the stratigraphy of which have been vigorously debated in the past. A detailed analysis of larger foraminifera in these either foraminifera or foraminifera-coral-coralline algae-dominated platform and associated comparatively deeper-marine units permits us to establish a high-resolution biostratigraphy in the context of shallow benthic zonation (with SBZ zones) of Tethyan Paleogene.
51p
vinasaki2711
09-11-2019
6
0
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This complete section contains benthic foraminiferal assemblages which include calcareous and agglutinated cosmopolitan deep-water species (DWBF). Among the calcareous deep benthic foraminifera Aragonia velascoensis Anomalinoides rubiginosus, Oridorsalis umbonatus, Nuttallides truempyi, Pullenia coryelli and Tappanina selmensis, are relatively abundant.
24p
vinasaki2711
09-11-2019
10
1
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