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INNER PLATFORM SEDIMENTS with Praebullalveolina Afyonica SIREL and ACAR AROUND ELAZIĞ REGION (E

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Mineral Res. Expl. Bull., 118, 9-14, 1996 INNER PLATFORM SEDIMENTS WITH Praebullalveolina afyonica SIREL and ACAR AROUND ELAZIĞ REGION (E. Turkey) Niyazi AVŞAR* ABSTRACT.- The presence of the Alveolinidae, Peneroplidae and Miliolidae families, which represent the inner platform sedi- ments of Eocene has been rarely reported in the Mediterranean countries and Turkey up to now. The following fossil assemb- lage Praebullalveolina afyonica Sirel & Acar, Praerhapydionina huberi Henson,Peneroplis damesini Henson, Peneroplis aff. la- evigatus d'Orbingy, Spirolina aff. cylindracea Lamarck, Nummulites striatus (Bruguiere), Gyroidinella magna (Le Calvez), As- terigerina rotula (Kaufmann), Halkyardia minima (Liebus) and Miliolidae have described from the Upper Eocene inner platform sediments around Alatarla, NW Elazığ, E. Turkey. Systematic description and picture of the Anatolian form and the unique al- veolinid, Praebullalveolina afyonica. Sirel & Acar, of Upper Eocene sediments and also, some pictures of the species, which are only characterized by the Middle-Upper Eocene sequence, have been given. INTRODUCTION bonates with Alveolinidae, Peneoplidae and Miliolidae forms and particularly the unique form of Anatolian The porcelaneous foraminifers such as Alveoli- Praebullalveolina afyonica Sirel & Acar, which is ra- nidae, Peneroplidae and Miliolidae families which rely seen in the Mediteranean countries and Turkey, represent inner platform Eocene deposits, have all found second time around Elazığ region. been recorded in the Mediterranean countries. The same forms of porcelaneous foraminifers of Upper Due to the hardness of the rock samples, it is not Eocene limestones in the petroleum wells in Iran possible to obtain free individuals. For this reason, and Iraq (Henson, 1950); Middle Eocene limestones the present study is only based on selected random with Borelis vonderschimitti of Vicenza (N. Italy) and oriented thin sections. All the thin sections are (Schweighauser, 1951); Middle Eocene limestone kept in numbers A1 -20 and A1 -21. with Peneroplidae of Pyrenees (N. Spain) (Caus, 1974); Middle Eocene limestone with Rhapydionina STRATIGRAPHY malatyaensis Sirel, Miliolidae and Peneroplidae of Malatya (E. Turkey) (Sirel, 1976); Upper Eocene li- The following lithostratigraphic units of the Pale- mestones with Praebullalveolina afyonica Sirel & ozoic, Mesozoic, Eocene and Miocene ages crop Acar, 1982); Middle Eocene limestone containing out around the investigated area. In this study, lit- Malatyna drobnae Sirel & Acar, Miliolidae and Pe- hostratigraphic and biostratigraphic features of Eo- neroplidae in Malatya (E. Turkey) (Sirel & Acar, cene sequence (Fig. 2), around Alatarla village, ha- 1993) have only documented by the authors in the ve been given in detail. areas mentioned above. In addition, Henson (1950) reported the presence of the Peneroplidae and Mili- Paleozoic olidae forms of Upper Eocene from the core samp- les taken from the petroleum wells in Iran and Iraq. • Paleozoic rock units are represented by meta- The sequence containing Praebullalveolina afyoni- morphic rock such as crystallized limestones, ca Sirel & Acar, Peneroplidae and Milliolidae, which calcschits, schist, marble and amphibolites around constutite the subject of the study, are observed Elazığ region. However, this sequence is characte- around Alatarla village, NW Elazığ (Fig. 1). rized by white jointly and fractured marbles in the study area. The unit is accepted to be allochthono- The aim of the study is to represent the presence. us because of the active tectonic events occurred of the new sequence of Upper Eocene inner shelf car- during late Cretaceous. Contact relationship of the 10 Niyazi AVŞAR INNER PLATFORM SEDIMENTS WITH Praebullalveolina afyonica SIREL 11 and ACAR AROUND ELAZIĞ REGION (E. Turkey) 12 Niyazi AVŞAR Paleozoic rocks with Mesozic units are various, ho- nes which consist of algae and miliolid at the base wever, it is observed that the contact relationship is of the unit. Also the following fosil assemblages we- only tectonic in the study area. re described from this unit; Nummulites perforates (Montfort), Alveolina elongata d'Orbingy, Alveolina Mesozoic fusiformis Sowerby, Fabiania cassis (Oppenheim), Halkyardia minima (Liebus), Gyroidinella magna The unit is mainly represented by gabbro, diori- (Le Calvez), Asterigerina rotula (Kaufmann), Linde- te, granodiorite, granite, diabase, basalt, andesite, rina brugesi Schlumberger and Chapmanina gassi- pyroclastic rocks and mudstones around the regi- nensis (Silvestri). According to these fossils, Upper on. However, the main lithology of the investigated Lutetian age was given to unit. Some workers such area are represented by granite, granodiorite, ba- as Bieda (1963), Bombita & Moisescu (1968), Blon- salt, andesite and pyroclastics. This magmatic bulk deau (1972), Rahaghi & Schaub (1976) and Scha- is unconformably covered by younger sedimentary ub (1981) also express the age of the Nummulites deposits and valcano-clastic rocks. perforates (Montfort) as Upper Lutetian. Moreover, the age of Alveolina elongata d'Orbingy and Alve- Eocene olina fusiformis Sowerby are reported to be Upper Lutetian. Moreover, the age of Alveolina elongata This sequence starts with polygenic heteroge- d'Orbigny and Alveolina fusiformis Sowerby are re- neous, variously colored and medium to thick bed- ported to be Upper Lutetian by Hottinger (1960), ded basal conglomerates, and shows lateral and Adams (1962) and Dizer (1965). The uppert part of vertical facies changes. The pebbles of the conglo- the section includes nummulitic clayey limestone, sandy limestones containing miliolid and algal li- merates are mainly derived from Paleozoic and Mesozoic aged rock units. This passes upward into mestones that comprise Nummulites striatus (Bru- clayey-sandy limestones, sandstone, clay and li- guiere) Asterigerina rotula (Kaufmann), Spha- mestones that are all in beige color, fossiliferous erogypsina globula (Reuss), Gyroidinella magna and regularly bedded. In the Elazığ region, the fol- (Le Calvez), Halkyardia minima (Liebus), Praer- hapydionina huberi (Henson), Peneroplis aff. laevi- lowing foraminifers were identified, characterizing upper part of the Middle Eocene and Upper Eoce- gatus d'Orbigny, Peneroplis damesini Henson, Spi- rolina aff. cylindracea Lamarck, Praebullalveolina ne, the result of the paleontologic investigations afyonica Sirel & Acar. In accordance with these fo- carried out on Eocene sequence. These are Num- raminifer, this part of the sequence is Upper Eoce- mulites perforates (Mondfort), Assilina exponens ne in age. Nummulites striatus (Bruguiere) is cha- (Sowerby), Alveolina fusiformis Sowerby, Alveolina racteric form of the Upper Eocene age according to elongata d'Orbingy, Sphaerogypsina globula (Re- Nemkov (1967), Ferrer (1971), Blondeau (1972) uss), Silvestriella tetraedra (Gümbel), Maslinella and Schaub (1981). However, in the type locality of aff. chapmani Galesner & Wade, Asterigerina rotu- Praebullalveolina afyonica Sirel & Acar, Sirel and la (Kaufmann), Chapmanina gassinensis (Silvestri), Acar (1982) record the age of the section as Upper Linderina brugesi Schlumberger, Fabiania cassis Eocene according to the fossil assemblages; Num- (Oppenheim), Halkyardia minima (Liebus), Gyroidi- mulites fabianii (Prever), Nummulites fabianii reti- nella magna (Le Calvez), Nummulites fabianii (Pre- ates (Roveda), Gyroidinella magna (Le Calvez), ver), Nummulites ex gr. fabianii, Nummulites stri- Halkyardia minima (Liebus), Chapmanina gassi- atus (Bruguiere), Praerhapydionina huberi Henson, nensis (Silvestri), Peneroplis aff. glynnjonesi Hen- Peneroplis damesini Henson, Praebullalveolina af- son, Peneroplis aff. damesini Henson. yonica Sirel & Acar, Spirolina aff. cylindracea La- marck, Peneroplis aff. laevigatus d'Orbingy, Pene- roplis dusenburyi Henson, Heterostegina sp., Aste- Miocene rocyclina sp., Operculina sp., Orbitolites sp., Dis- cocyclina sp., Peneroplis sp., Miiolidae and Algae. This unit generally consists of basalts, tuffs, agglomerates, limestones and sandstones. Also, Similar sequence, that is seen around Alatarla the unit unconformably rest on the limestones of village (NW Elazığ), is composed of clayey limesto- the Upper Eocene and the older rock units. INNER PLATFORM SEDIMENTS WITH Praebullalveolina afyonica SIREL 13 and ACAR AROUND ELAZIĞ REGION (E. Turkey) SYSTEMATIC DESCRIPTION countries with its foraminifer assemblage. The se- quence, that is completely composed of algal li- Order : Foraminiferida Eichwald, 1830 mestones containing Nummulites perforatus (Mont- fort), Alveolina elongata d'Orbigny, Alveolina fusi- Suborder : Miliolina Delage & Herouard, 1986 formis Sowerby, conformably rest on top of the late Superfamily : Miliolacea Ehrenberg, 1839 Lutetian (Fig. 2). The same sequence is also cha- Family : Alveolinidae Ehrenberg, 1839 racterized by Nummulites striatus (Bruguiere), Pra- ebullalveolina afyonica Sirel & Acar and Peneroplis Genus : Praebullalveolina Sirel & Acar damesini Henson of late Eocene. Type species : Praebullalveolina afyonica Sirel & Acar The unique Anatolian alveolinid form of the Up- per Eocene, Praebullalveolina afyonica Sirel & Acar, has been secondly reported and distinguis- Description hed in Elazığ area apart from its own type locality. The algal limestones, that Praebullalveolina afyoni- ca Sirel & Acar was found in Elazığ area, show gre- The observed test is small, porcelaneous, at similarity with the sequence characteristics, stra- slightly natuloid
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    FORAMINIFERA AS BIOINDICATORS IN CORAL REEF ASSESSMENT AND MONITORING: THE FORAM INDEX PAMELA HALLOCK1*, BARBARA H. LIDZ2 ELIZABETH M. COCKEY-BURKHARD3, AND KELLY B. DONNELLY4 1College of Marine Science, Univ. of South Florida, 140 Seventh Ave. S., St. Petersburg, FL 33701, USA; 2U.S. Geological Survey Center for Coastal and Regional Marine Studies, 600 Fourth St. S., St. Petersburg, FL 33701, USA; 3Minerals Management Service, 381 Elden Street, Herndon, VA 20170, USA; 4Florida Fish and Wildlife Conservation Commission, 100 Eighth St. SE, St. Petersburg, FL 33701, USA *(author for correspondence, e-mail: [email protected]) Abstract. Coral reef communities are threatened worldwide. Resource managers urgently need indicators of the biological condition of reef environments that can relate data acquired through remote-sensing, water-quality and benthic-community monitoring to stress responses in reef or- ganisms. The “FORAM” (Foraminifera in Reef Assessment and Monitoring) Index (FI) is based on 30 years of research on reef sediments and reef-dwelling larger foraminifers. These shelled protists are ideal indicator organisms because: • Foraminifers are widely used as environmental and paleoenvironmental indicators in many contexts; • Reef-building, zooxanthellate corals and foraminifers with algal symbionts have similar water- quality requirements; • The relatively short life spans of foraminifers as compared with long-lived colonial corals facili- tate differentiation between long-term water-quality decline and episodic stress events; • Foraminifers are relatively small and abundant, permitting statistically significant sample sizes to be collected quickly and relatively inexpensively, ideally as a component of comprehensive moni- toring programs; and • Collection of foraminifers has minimal impact on reef resources. USEPA guidelines for ecological indicators are used to evaluate the FI.
  • Checklist, Assemblage Composition, and Biogeographic Assessment of Recent Benthic Foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

    Checklist, Assemblage Composition, and Biogeographic Assessment of Recent Benthic Foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

    Zootaxa 4731 (2): 151–192 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2020 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4731.2.1 http://zoobank.org/urn:lsid:zoobank.org:pub:560FF002-DB8B-405A-8767-09628AEDBF04 Checklist, assemblage composition, and biogeographic assessment of Recent benthic foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes JOACHIM SCHÖNFELD1,3 & JULIA LÜBBERS2 1GEOMAR Helmholtz-Centre for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel, Germany 2Institute of Geosciences, Christian-Albrechts-University, Ludewig-Meyn-Straße 14, 24118 Kiel, Germany 3Corresponding author. E-mail: [email protected] Abstract We describe for the first time subtropical intertidal foraminiferal assemblages from beach sands on São Vincente, Cape Verdes. Sixty-five benthic foraminiferal species were recognised, representing 47 genera, 31 families, and 8 superfamilies. Endemic species were not recognised. The new checklist largely extends an earlier record of nine benthic foraminiferal species from fossil carbonate sands on the island. Bolivina striatula, Rosalina vilardeboana and Millettiana milletti dominated the living (rose Bengal stained) fauna, while Elphidium crispum, Amphistegina gibbosa, Quinqueloculina seminulum, Ammonia tepida, Triloculina rotunda and Glabratella patelliformis dominated the dead assemblages. The living fauna lacks species typical for coarse-grained substrates. Instead, there were species that had a planktonic stage in their life cycle. The living fauna therefore received a substantial contribution of floating species and propagules that may have endured a long transport by surface ocean currents. The dead assemblages largely differed from the living fauna and contained redeposited tests deriving from a rhodolith-mollusc carbonate facies at <20 m water depth.
  • Article Title: the Geographic, Environmental and Phylogenetic Evolution of the Alveolinoidea from the Cretaceous to the Present Day

    Article Title: the Geographic, Environmental and Phylogenetic Evolution of the Alveolinoidea from the Cretaceous to the Present Day

    Article title: The Geographic, Environmental and Phylogenetic Evolution of the Alveolinoidea from the Cretaceous to the Present Day. Authors: Marcelle Boudagher-Fadel[1], Geoffrey David Price[2] Affiliations: Office of the Vice-Provost (Research), University College London, 2 Taviton Street, London WC1H 0BT UK[1] Orcid ids: 0000-0002-2339-2444[1], 0000-0001-8232-6853[2] Contact e-mail: [email protected] License information: This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY) 4.0 https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. Preprint statement: This article is a preprint and has not been peer-reviewed, under consideration and submitted to UCL Open: Environment Preprint for open peer review. DOI: 10.14324/111.444/000057.v1 Preprint first posted online: 22 October 2020 Keywords: Foraminifera, alveolinoids, Cretaceous, Paleogene, Neogene, Holocene, biostratigraphy, phylogeny, palaeoenvironment, palaeogeographic distribution, extinctions, sea-level changes. , The Environment, Climate, Ecology 1 The Geographic, Environmental and Phylogenetic Evolution of the Alveolinoidea from the Cretaceous to the Present Day. Marcelle K. BouDagher-Fadel and Geoffrey David Price Office of the Vice-Provost (Research), 2 Taviton Street, London WC1H 0BT UK Corresponding author Prof. Marcelle BouDagher-Fadel e-mail: [email protected], Tel: 020 7679 7480 Abstract The superfamily Alveolinoidea is a member of the Order Miliolida, and is comprised of three main families, the Alveolinidae, the Fabulariidae and the Rhapydioninidae. They are examples of Larger Benthic Foraminifera (LBF), which are single cell organisms with specific characteristic endoskeletons.