Daniel Vachard

Daniel Vachard
Université de Lille · Institut de Recherche Pluridisciplinaire en Sciences de l'Environnement (IRPSE)

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Publications

Publications (506)
Book
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The Pennsylvanian section at Bishop Cap in Doña Ana County, New Mexico, is 256 m thick, and we assign it to the La Tuna and Berino members of the Horquilla Formation. This limestone-dominated section consists mostly of wackestone, lesser amounts of packstone and minor amounts of grainstone and floatstone. The Horquilla Formation strata at Bishop Ca...
Article
The succession in the Tizra Formation shows an excellent exposure of a small open marine platform where alternating microbial boundstones (buildups) and oolitic/bioclastic grainstone (shoals) and packstone facies tempestites occur repetitively for a sort interval only 0.55 Myr, an scenario unknown in the geological record. The relatively small exte...
Article
Full-text available
The Pennsylvanian stratigraphic section exposed in and near Bruton Canyon on the northern flank of the Oscura Mountains is a section important to regional stratigraphy because M. L. Thompson used it as a key reference section in his 1942 monographic synthesis of the Pennsylvanian in New Mexico. The Pennsylvanian section in the northern Oscura Mount...
Article
A late Viséan fossiliferous limestone block from the Kirchbach Formation (Mississippian) in the Carnic Alps (southern Austria) has been studied for its palaeontological and petrographic characteristics. The limestone block contains abundant fossils and is composed of different microfacies including bioclastic floatstone, coral bafflestone, bryozoan...
Article
The Rectogordius (Foraminifera) abundance zone is described in the east of the Shishtu village in the Ozbak Kuh Mountain. The samples were collected in the Zaladou Formation., which is 60 m thick and composed of shales, sandstones, sandy limestones, microconglomerate, bioclastic limestones, coral limestone and fusulinid limestones. The Rectogordius...
Article
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Abstract—The Carboniferous System in the Manzano Mountains (including the Manzanita Mountains) of central New Mexico is a succession ~ 340-560 m thick assigned to the (ascending order) Arroyo Peñasco, Log Springs, Sandia, Gray Mesa, Atrasado and Bursum formations. Mississippian strata assigned to the Arroyo Peñasco and Log Springs formations are pr...
Article
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Pennsylvanian sedimentary rocks in the Sacramento Mountains, New Mexico, comprise an ~1 km thick stratigraphic section. The Morrowan-Desmoinesian Gobbler Formation was deposited by shallow marine processes in and near the Alamo clastic trough. In this trough, the Desmoinesian-Missourian Gray Mesa Formation (Bug Scuffle Member, Gobbler Formation) is...
Book
Full-text available
ABSTRACT Lucas, Spencer G., William A. DiMichele, Karl Krainer, James E. Barrick, Daniel Vachard, Michael P. Donovan, Cindy Looy, Hans Kerp, and Dan S. Chaney. The Pennsylvanian System in the Sacramento Mountains, New Mexico, USA: Stratigraphy,Petrography, Depositional Systems, Paleontology, Biostratigraphy, and Geologic History. Smithsonian Contri...
Data
This supplementary material consists on the presentation on Hazro Permian done at the Perugia Conference, April 2016
Article
The Carboniferous foraminifera are composed of representatives of three classes: Fusulinata, Miliolata and Nodosariata. Despite ample literature on Paleozoic Allogromiata and Textulariata, the real presence of these classes remains questionable during the Carboniferous and are thus excluded herein. The main biostratigraphical markers belong to the...
Article
Detailed studies of upper Cisuralian (i.e., upper lower Permian) fusulinids make it possible to decipher the paleobiogeographic relations of central Iran, as part of the Cimmerian terranes, with other Paleotethyan regions. Two sections, Bagh-e Vang and Shesh Angosht, located in east-central Iran, are revised. Four local fusulinid biozones are disti...
Article
Full-text available
The upper Yakhtashian to Bolorian Bagh-e Vang Formation was studied in two stratigraphic sections in north Tabas, east-central Iran. The examination of fusulinids and small foraminifers of the Bagh-e Vang Formation in two studied sections led to the identification of the new fusulinid and small foraminifer genera and species which are recovered fro...
Article
A 3 m thick carbonate sequence from northern Chios Island is assigned here to the latest Capitanian/earliest Wuchiapingian transitional interval. It is characterized by abundant gymnocodiacean algae, associated with some miliolate, nankinellin and nodosariate foraminifers. These strata display bioaccumulated perireefal microfacies with richthofenii...
Article
Foraminifera have been used to revise the biostratigraphy of all known Mississippian outcrops in Morocco cited either as early Viséan (or its equivalent V2a or V2a/b chronozones or the regional Cfm1 biozones), or mid Viséan (or the foraminiferal zones V2b-V3a or Cfm2-Cfm3 biozones). This group of microfossils occur in shallow-water limestones withi...
Article
The foraminiferal biostratigraphy and precise geological ages of the late Wordian, Capitanian, and Wuchiapingian strata in the Abadeh region of Iran have remained poorly constrained, despite evidence that they contain one of the most complete marine records of this important time interval. The purpose of this study is to provide a more complete doc...
Article
Monograph of smaller foraminifers, fusulinids and microprobelmatica of the Early Permian sediemntary succession (Zweikofel, Zottachkopf and Trogkofel formations) of the Carnic Alps (Austria/Italy)
Article
A new foraminiferal subzone (Cf5α or MFZ12α) in between the classical foraminiferal zonal biozones is characterized by the first occurrence of Archaediscus at concavus stage, primitive species of Pojarkovella , as well as the first Endothyranopsis s.s. This interval is represented in England, France and Morocco (in the western Palaeotethys) and in...
Article
Typical early Viséan foraminiferal assemblages documented in outcrops of the Western Meseta of Morocco led to the erroneous biostratigraphic dating of areas that later, after much effort, have been demonstrated to correspond to the mid and late Viséan. These sections are analyzed to decipher if they are formed by reworked specimens or if this fauna...
Article
The ‘‘Calcaires a` Productus’’ or ‘‘Calcaires a` Productus giganteus’’ on the southern slope of the Montagne Noire (Hérault, France) consist of numerous isolated olistolitic limestone blocks, generally transported by gravitational flows into siliciclastic basinal deposits. The present paper is the first systematic monographic study of gigantoproduc...
Article
Full-text available
Carboniferous and Permian strata crop out in Central Iran. The Asad-Abad section has yielded Gzhelian and Asselian fusulinid levels. Here we describe the smaller foraminifers of this section for the first time and introduce four biozones based on these taxa. Biozone I with Monotaxinoides? melanogaster n. sp. is interpreted to be early?-middle? Gzhe...
Article
Late Mississippian carbonates in southern Montagne Noire are dominantly domical to laterally‐accreted microbial mounds in some formations, as well as stratiform microbial limestones occurring in hundreds of olistoliths within a flysch basin, constituting pieces of a giant puzzle that are used to help reconstruct a platform in a region that is no lo...
Article
A detailed revision of foraminiferal zonal schemes in sections throughout Europe and North Africa for the Viséan–Serpukhovian boundary interval suggests that several foraminiferal taxa might have the potential to form reliable markers throughout the Palaeotethys. This would support the currently investigated boundary definition based on the First A...
Article
The upper Viséan-lower Serpukhovian Roque Redonde Formation in the southern part of the Montagne Noire, SW France, contains carbonate mounds with predominant micropeloidal facies tens of meters thick representing paleotopographic highs. Calcareous green algae, including representatives of the Dasycladales and Bryopsidales, are relatively common wit...
Article
In southern France, including the southern Montagne Noire and Mouthoumet Massif, foraminifers allow describing a biostratigraphical zonation for the different formations included in those areas. Carbonate platforms are developed from the latest Tournaisian MFZ8 zone up to the lower part of the late Viséan Cf6γ zone. In between, up to six additional...
Article
The Devonian of the Carnic Alps (Austria) is developed in different facies. The shallow marine facies is up to 1200 m thick. The Feldkogel Limestone of the Polinik Formation, >330 m thick, was dated as Eifelian–Late Devonian. The Feldkogel Limestone at Mount Polinik is developed in a peritidal facies composed of subtidal, intertidal, and supratidal...
Article
The microfloral and microfaunal assemblages of the MFZ11 foraminiferal biozone (late early Viséan; formerly V2a) are well developed in the Kiyasar section of the Sari area (central Alborz; northern Iran). Regionally, this biozone MFZ11 may be subdivided into three subzones. The lower subzone, MFZ11A, is characterized by the appearances of the algae...
Article
Full-text available
The name Ovatella Solovieva in Rauzer-Chernousova, Bensh, Vdovenko, Gibshman, Leven, Lipina, Reitlinger, Solovieva, and Chediya, 1996, is pre-occupied by the gastropod Ovatella Bivona Bernardi, 1832. It is replaced here by Solovievaia Vachard and Le Coze nomen novum. Following this nomenclatural modification, a revision of this profusulinellid genu...
Article
The > 1,000 m-thick Carboniferous sedimentary succession of Nötsch is divided into the Erlachgraben, Badstub, and Nötsch formations with poorly constrained precise ages, but probably constituting a continuous lithostratigraphic Group deposited from the latest Viséan to the early Bashkirian, thus including a complete Serpukhovian succession. We date...
Article
At NewWell Peak in the Big HatchetMountains of southwestern NewMexico, a well-exposed, nearly homoclinal, and almost complete section of the Pennsylvanian-lower Permian (Cisuralian) Horquilla Formation is ∼1-km thick, rests with erosional disconformity on theMississippian Paradise Formation, and its top is covered. Nearby outcrops indicate that the...
Article
A relatively complete succession of the Viséan to Serpukhovian rocks is exposed in northern Alborz, Iran, where two sections at Naserabad and Dozdehban have been selected for detailed biostratigraphic investigations. The archaediscoid foraminifers, which are probably the most precise biostratigraphic markers, have been investigated. During the earl...
Article
Full-text available
The lowermost carbonate beds of the Cerro San Pedro (San Pedro de la Cueva, Sonora State, Mexico) previously assigned to the Mississippian, belong in fact to the lower Ordovician. The limestone of this succession is often dolomitized and chertified, and displays gastropods, pelmatozoans, sponges, and trilobites as major bioclastic components. The d...
Article
Angelina Altiner, 1988 has been considered to be a junior synonym of Xingshandiscus Zheng, 1986. This synonymy is irrelevant, because Angelina is unilayered pseudofibrous, whereas Xingshandiscus exhibits a bilayered wall consisting of an inner dark microgranular layer and an outer clear pseudofibrous layer. Furthermore, as Angelina is a pre-occupie...
Article
In New Mexico, Nuia is an abundant constituent of the Hitt Canyon Formation of the Lower Ordovician El Paso Group in the Mud Springs Mountains and also occurs as low stratigraphically as the uppermost part of the Bliss Formation in the Caballo Mountains. Additional arguments are provided to prove that Nuia is an organism, probably a cyanobacteria,...
Article
A rich bryozoan assemblage of Cerros de Tule contains 10 species including two cystoporates, one trepostome, two rhabdomesine cryptostomes and five fenestrates. The age of this assemblage was determined on the basis of associated fusulinds Beedeina as late middle Desmoinesian (probable equivalent of the Podolskian substage of the Moscovian stage)....
Article
The mainly calcareous succession from the mid Tournaisian to the lower part of the upper Viséan in the Southern Montagne Noire Mont Peyroux nappes and Cabrières slices is sedimentologically revised. From the late Viséan, the Variscan orogeny affected the area, and the studied Mississippian part of the succession was considered as part (together wit...
Article
Full-text available
The uppermost Carboniferous (Gzhelian)–Lower Permian (Asselian to Sakmarian) Anarak Group of the Zaladou section in central Iran is more than 180-m thick and includes thick units of shale, calcareous sandstone, fusulinid limestone, sandy limestone, and dolomite. The Zaladou and Tigh-e-Madanu formations of this group were dated as Gzhelian to Sakmar...
Article
The J.H. Johnson Collection, which is deposited at the National Museum of Natural History in Washington D.C., may be split into discrete sections, one of which is dedicated to the post-Carboniferous calcareous fossil algae of Guatemala. The contents of the latter, which was established more than half a century ago and which is a reference section f...
Article
The cystoporate bryozoan Glyptopora michelinia (Prout, 1860) was identified from the latest Viséan/earliest Serpukhovian of southern France. This species was known previously from the Mississippian of the USA and southwestern Spain. The morphology of the genus Glyptopora includes the development of bilaminate lobes. Such morphology became successfu...
Book
The sedimentology, biostratigraphy, and sequence stratigraphy of the Early Carboniferous turbiditic basins of Moroccan Meseta are described in this book. After numerous lithologic and paleontologic investigations, a precise biostratigraphic scale was built, especially by foraminifers for Morocco to date limestones in platform, but also turbidites b...
Article
The Baelen mud mounds in eastern Belgium represent a local member of the mid-Famennian Souverain-Pre Formation (an important carbonate interval within the Condroz Sandstone Group). The lower part of this member contains silty bioclastic wackestones and packstones that are particularly rich in the problematical protists Serrisinella and Dreesenulell...
Article
The Upper Palaeozoic Godar-e-Siah Complex of Jandaq, Central Iran, comprises three isolated, fault-bounded outcrops exposing Palaeozoic fossiliferous carbonates, volcanics and siliciclastics, which are markedly distinct from the surrounding sedimentary successions. The three outcrops, that emerge below Cretaceous and younger sediments, are the Chah...
Article
The upper Viséan-upper Serpukhovian deposits of northern Alborz (Iran) consist of thin bedded, fine sandstone and siltstone, marly and ooidal limestone and marly shale. Rich and diverse foraminiferal assemblages have been analyzed in two sections (Dozdehban and Naserabad). Five biozones and most foraminifers are first described from upper Viséan-up...
Article
The uppermost Carboniferous (Gzhelian)–Lower Permian (Asselian to Sakmarian) Anarak Group of the Zaladou section in central Iran is more than 180‐m thick and includes thick units of shale, calcareous sandstone, fusulinid limestone, sandy limestone, and dolomite. The Zaladou and Tighe‐ Madanu formations of this group were dated as Gzhelian to Sakmar...
Article
Full-text available
From outcrops of the Permian Tuzancoa Formation in the region of Pemuxco, Hidalgo State, México, five species of crinoids are described Cylindrocaulis cusfiski Moore & Jeffords, 1968, Baryschir anosus Moore & Jeffords, 1968, Cyclocaudex costatus Moore & Jeffords, 1968, Cyclocaudex jucundus Moore & Jeffords, 1968, Cycloscapus laevis Moore & Jeffords...
Article
Full-text available
Pennsylvanian strata are well exposed in the Cerros de Amado area, east of Socorro, central New Mexico. The succession is approximately 800 m thick and divided into the Sandia, Gray Mesa and Atrasado formations. Conodonts indicate an Atokan age for the Sandia Formation. The Gray Mesa Formation is divided into Elephant Butte, Whiskey Canyon and Garc...
Article
Full-text available
The tectonosedimentary and lithostratigraphic units of the Mont Peyroux nappe and Cabrières klippes, in the southeastern Montagne Noire, are revised. The Mont Peyroux nappe displays two Mississippian groups: Saint-Nazaire-de-Ladarez and Barrac. The Saint-Nazaire-de-Ladarez Group includes the traditional formations of Lydiennes, Faugères and Colonne...
Article
The Baelen mud mounds in eastern Belgium represent a local member of the mid-Famennian Souverain-Pré Formation (an important carbonate interval within the Condroz Sandstone Group). The lower part of this member contains silty bioclastic wackestones and packstones that are particularly rich in the problematical protists Serrisinella and Dreesenulell...
Conference Paper
Full-text available
After several decades of intense research, the topic of the Cambrian explosion has fed an abundant literature focusing on its biodiversity and phylogenetic patterns. Our understanding of this is, however, limited by the lack of accurate dating of the fossil radiation and abiotic changes. Although efforts have been made to develop a refined timescal...
Article
This review has been undertaken in order to present some interpretations about the biostratigraphy of the smaller foraminifers belonging to four classes present during the Permian: Fusulinata, Miliolata, Nodosariata and Textulariata. Biostratigraphic markers of these classes are principally known in the orders and superfamilies of Lasiodiscoidea, B...
Article
Full-text available
The Taidon and Fomin formations of the Kuznetsk Basin (SW Siberia, Russia) were sampled in three sections, Old Belovo quarry, Artyshta village and Starobachaty village. The carbonate beds revealed microfacies of bioclastic wackestone and packstone, deposited in the distal parts of inner ramps and the proximal parts of mid ramps. Relatively rare plu...
Chapter
A new classification presented for the Paleozoic foraminifers encompasses six classes: Allogromiata, Astrorhizata, Fusulinata, Miliolata, Nodosariata, and Textulariata. The three main classes, Fusulinata, Miliolata, and Nodosariata, include 10 orders, 17 suborders, and 32 superfamilies. The biostratigraphy of these subdivisions and main genera is s...
Article
Full-text available
The uppermost Carboniferous-Lower Permian Dorud Group of the Gaduk section in Central Alborz (Iran) is more than 44 m-thick; it includes thick succession of conglomerates, quartzarenites, calcareous sandstones, oncolitic fusulinid limestones, sandy limestones, sandstones and shales. The Toyeh, Emarat and Shah Zeid formations of this Group were date...
Article
Abstract The new, atypical aragonitic foraminifer Tubulastella comans gen. et sp. nov. is described from the Late Triassic of Panthalassa (Wallowa terrane, north-east Oregon, USA). This rectilinear, undivided tubular form is closely related to ‘Coptocampylodon? rhaeticus’, a Rhaetian incertae sedis commonly found in the western Tethys. Morphologica...
Article
Full-text available
The “calcaires à Productus” of the Montagne Noire (Aude-Hérault, southern France) are carbonate lenses embedded within a thick Carboniferous siliciclastic complex. Foraminiferal assemblages in some of the larger carbonate lenses are typically representative of the late Viséan and Serpukhovian. Eleven new species of foraminifers are described: Hemid...
Article
The “calcaires à Productus” of the Montagne Noire (Aude-Hérault, southern France) are carbonate lenses embedded within a thick Carboniferous siliciclastic complex. Foraminiferal assemblages in some of the larger carbonate lenses are typically representative of the late Viséan and Serpukhovian. Eleven new species of foraminifers are described: Hemid...
Article
Full-text available
The uppermost Carboniferous-Lower Permian Dorud Group of the Gaduk section in Central Alborz (Iran) is more than 44 m-thick; it includes thick succession of conglomerates, quartzarenites, calcareous sandstones, oncolitic fusulinid limestones, sandy limestones, sandstones and shales. The Toyeh, Emarat and Shah Zeid formations of this Group were date...
Research
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Abstact. In the course of an investigation on the m.ìjor mass extinction event near the P/T boundary in the vicinity of Shahreza (South lsfahan) in Iran, a stratigraphically significant new species o{ foraminifera (Dagmarita shahrezaensis n. sp.) has been discovered in the lWuchiapingian/Dzhulfian (Late Permian) of central Iran (Hambast Formation)....