Pedro Cózar

• PhD
• Geosciences Institute

The largely ice-free world of the ‘Chadian’-Arundian (early Visean) is investigated in two successions in south Cumbria, in order to help better understand the relationships between transgression, hiatus and the position of the basal Arundian. A detailed foraminiferal biostratigraphy is used to age constrain the transition from the late ‘Chadian’ t...

Carboniferous-Permian successions in the Amotape Mountains (NW Peru) are poorly dated due to the predominant siliciclastic intervals and the scarcity of fossils. The biostratigraphy of the formations is thus poorly constrained and, in general, limited to major systems or subsystems. The Cerro Prieto Formation was assigned to the Pennsylvanian or mi...

Plain Language Summary Nearly synchronous global changes in geomagnetic polarity give both a detailed irregular pacing to geological time and provide a glimpse into heat transfer processes across the core—mantle boundary which drives the Earth's geodynamo. Although the Late Carboniferous is characterized by some well‐studied reversals, details of t...

The late Asbian appears to mark the initial, well‐documented, onset of far‐field glacio‐eustatic changes in equatorial Mississippian strata. This work unravels the nature of cyclicity in upper Asbian shallow marine carbonates, using a combination of petrographic study, rock magnetic proxies and astrochronological testing on samples from the Trowbar...

First occurrences of selected foraminifers and their interpreted phylogenies in the uppermost Arundian Substage of the South Cumbria Shelf, northern England, allows the distinction of four biostratigraphic events. Event A1 is characterised by the occurrence of occluded Nodosarchaediscus, Consobrinellopsis, and Archaediscus krestovnikovi and is assi...

First occurrences of selected foraminifers and their interpreted phylogenies in the uppermost Arundian Substage of the South Cumbria Shelf, northern England, allows the distinction of four biostratigraphic events. Event A1 is characterised by the occurrence of occluded Nodosarchaediscus, Consobrinellopsis, and Archaediscus krestovnikovi and is assi...

A study of calcareous algae from the late Viséan to Serpukhovian interval in basins from the western margin of Palaeotethys (basins located currently in Western Europe and Northern Africa) shows varied responses in terms of palaeoecological diversity, specimen abundance, genus richness and taxonomic distinctness for the low-latitude basins. Alg...

Foraminiferal diversity and taxa richness from beds transitional between the Asbian and Brigantian substages (Middle Mississippian) show patterns of secular change which allow detailed inter-regional correlations to be established. Foraminifera from the Askrigg Block, Stainmore Trough, Alston Block, South Cumbria Shelf and Solway Basin show similar...

The Viséan–Serpukhovian boundary is poorly defined in South China, hampering regional and global stratigraphical correlations. The foraminiferal and conodont distribution of the Baping Formation in the carbonate-slope Danlu section permits the recognition of an interval from the middle Viséan to the uppermost Serpukhovian in a continuous succession...

Revision of foraminifers, algae and problematic algae of well-known late Viséan formations in the Jerada syncline in the Eastern Meseta, Azrou-Khenifra Basin in the Central Meseta and Oued Cherrat in the Western Meseta, suggests that the recognition of the chronostratigraphic units within this period lacks most of the foraminiferal markers in the W...

Variations in the geochemical signatures of fossil brachiopod shells may be due to diagenesis and/or biological processes (i.e., ‘vital effects’). It is critical to characterise them in order to identify reliable shell areas suitable for paleoclimate studies. This investigation contributes to an in-depth understanding of geochemical variations in G...

Different non-classical crystallization mechanisms have been invoked to explain structural and compositional properties of biocrystals. The identification of precursor amorphous nanoparticle aggregation as an onset process in the formation of numerous biominerals (crystallization via particle attachment) constituted a most important breakthrough fo...

Variations in geochemical signatures of fossil brachiopod shells may be due to diagenesis and/or biological processes (i.e. ‘vital effects’). Characterize them is crucial to identify reliable areas into the shell suitable to paleoclimatological studies. This investigation contributes to an in-depth understanding of geochemical variations of Giganto...

Rich foraminiferal assemblages from the Bama Platform in South China allow to clarify the systematics, composition, and biostratigraphy of the family Janischewskinidae. The family is considered to comprise four genera, Janischewskina, Cribrospira, Bibradya, and Parajanischewskina. The genera Rhodesinella and Groessensella are considered to be synon...

Five types of reefs are described from the northern and southern parts of the Azrou-Khenifra Basin generated by the interactions of microbes and coral communities. The type 1 microbial reefs grew in both shallow- and deep-water settings, with a strong control by glacioeustasy. Type 2 microbial reefs developed in more tranquil periods, associated wi...

Ten foraminiferal zones are proposed in the Youjiang Basin (South China): Pojarkovella, Pojarkovella nibelis-Endothyranopsis compressa, Cribrospira panderi-Eostaffella ikensis, Climacammina, Janischewskina delicata, Eostaffellina decurta, Bradyina cribrostomata, Eostaffellina actuosa-Eostaffellina protvaensis, Plectostaffella and Pseudostaffella an...

Brachiopod taxonomy is based on descriptions of shell morphology and key characters, but diagenesis generally modifies or erases some of them, hindering brachiopod identification. Brachiopods that are taxonomically related usually present shells with similar appearance but can differ in size (i.e., Rhynchonellata). Some aspects of morphology – for...

Se presentan los primeros fósiles devónicos reconocidos en el sinclinorio del Sil (Lugo, NO de España), encontrados en rocas calcáreas incluidas en un contexto local cartografiado como pizarras ordovícicas, lo que sugiere la necesidad de abordar una investigación estructural y estratigráfica más detallada. El yacimiento paleontológico se vincula co...

The degree to which emergent surfaces are correlated in late Asbian carbonate successions in Britain and Ireland is assessed by the integration of detailed biostratigraphy and diversity trends in foraminifers. Data are related to the Trowbarrow Quarry section in northern England, which provides a reference section for the upper Asbian because of it...

Despite the importance of south Cumbrian sections for the Arundian–Holkerian (mid Viséan) boundary, beyond the stratotype proposed at Barker Scar in 1976, little else is known regionally about this boundary and its relationship to adjacent formations. We re-evaluate the Dalton Formation, making its upper and lower boundaries regionally more consist...

A detailed biostratigraphy is established, using the high foraminiferal abundance and diversity at Trowbarrow Quarry, which is also proposed as a stratotype section for the late Asbian (late Visean), a substage not previously formally subdivided. The foraminiferal assemblages suggest that the early Asbian has to be revised, which has implications f...

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...

The Carboniferous outcrops from Adarouch (central Morocco) are composed of siliciclastic and carbonate rocks, and the latter have yielded abundant fossils. The upper part of the marine succession in the Idmarrach Formation and its laterally equivalent Tirhela Formation belong to the Bashkirian. More recent investigations of poorly preserved coral a...

Becker, R. T. & Aboussalam, Z. S. & El Hassani, A. & Baidder, L. & Hüneke, H. & Mayer, O. & Cozar, P. & Helling, S. & Seyffert, K. & May, A. (2021): Devonian and the Carboniferous transgression in the Skoura region, Sub-Meseta Zone, Morocco. - Frontiers in Science and Engineering, vol. 10 (2): p. 229-311; Rabat, Maroc. Abstract The Sub-Meseta Zone...

Based on new field work, sampling for conodonts, ammonoids, and microfacies analysis, the allochthonous Lower/Middle Devonian stratigraphy and facies history of the Eastern Jebilet NNE of Marrakech is revised and refined. Silurian to Pragian partly siliceous black shales are assigned to the new Jebel Smaha Formation, which yielded HUVELIN (1977) in...

At Boudouda NW of Benahmed, upper Frasnian goniatite shales are in unconformable contact with massive, partly dolomitized conglomerate boulders of the new Oued Ayada Formation. They represent debris flow deposits of localized channels and contain reworked supposed Emsian reefal organisms and Frasnian to lower/?middle Famennian conodonts. Rare foram...

The Valdediezma platform consists of upper Tournaisian to lower Bashkirian (Carboniferous) shallow-water carbonates deposited in the core of the Picos de Europa Province (Cantabrian Mountains, northwest Spain). Although faulted in several thrust sheets, it is the only preserved platform developed in the Mississippian starved basins of the southern...

Foraminiferal revision of the Holkerian Stratotype of Britain at Barker Scar, Holker Hall, south Cumbria, UK, allows the subdivision of the section into the Cf4δ, Cf5α and Cf5β subzones (the latter being further subdivided into a lower Cf5β1 and upper Cf5β2 intervals). The base of Cf5α subzone at the base of bed C and base of Cf5β subzone from the...

The correlation of disparate mid- to late Viséan platform carbonate successions of the Great Scar Limestone Group across northern England formerly relied heavily upon a coral and brachiopod biozonation scheme erected in the early 20 th century. This subsequently guided the development of a regional chronostratigraphic scheme some sixty years later...

In this study, middle to late Mississippian microfossil assemblages from the Maritimes Basin of eastern Canada (Nova Scotia, SW Newfoundland, and New Brunswick) are closely compared to those from Western Paleotethys basins. The comparison is focused mainly on foraminifers and calcareous algae. Most foraminifers and algae described from the Maritime...

Analysis of foraminiferal assemblages from the Viséan-Serpukhovian boundary interval in Britain has led to the recognition that levels correlated with the first occurrence of Lochriea ziegleri at the base of the Serpukhovian Stage can be established by the foraminifer Neoarchaediscus gregorii in England and Scotland, which first occurs from the Sin...

Foraminiferal assemblages have been recorded in sections from the Gower Peninsula and North Crop in South Wales, of Holkerian (Stormy Limestone Formation), late Asbian to early Brigantian (Oxwich Head Limestone Formation) and uppermost early to late Brigantian (Oystermouth Formation) age. The absence of lower Asbian foraminifers in the studied succ...

In this study of Mississippian rocks in Ireland, it is now recognized, based on faunal evidence, that several upper Viséan limestone formations which were previously excluded from the Serpukhovian now belong, in part, to the lower two substages of the Serpukhovian. A reassessment of previous foraminiferal determinations, together with new foraminif...

Foraminifers, calcareous algae and incertae sedis Algospongia of late Asbian to late Brigantian age in limestones from East Fife, East Lothian and Northumberland, enable the base of the late Brigantian to be recognised in all these areas. Preservation of the late Asbian and early Brigantian limestones in cyclothemic successions is generally poor. T...

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...

A new early Visean coral assemblage has been recorded from turbidite facies in the southern part of the Azrou-Khenifra Basin, northwest of Khenifra, central Morocco. The newly discovered Ba Moussa West (BMW) coral fauna includes Siphonophyllia khenifrense sp. nov., Sychnoelasma urbanowitschi, Cravenia lamellata, Cravenia tela, Cravenia rhytoides, T...

Lower Carboniferous rocks are well exposed in the northwestern part of the Moscow Basin. The Serpukhovian Stage is widely represented in that region and it is composed of three lithostratigraphic units: Rovnoe Formation (Tarusian Regional Stage), Poneretka Formation (Steshevian Regional Stage) and Uglovka Formation (Protvian Regional Stage). Coral...

Las rocas del Misisípico se extienden por grandes áreas de la Meseta de Marruecos. Aunque han sido descritas y estudiadas desde el comienzo del siglo XX (Lecointre 1926; Termier 1936; Termier y Termier 1950; Gigout 1951, Michard 1976), todavía quedan muchos detalles por conocer. El comienzo de la sedimentación carbonífera en la región de Khenifra g...

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...

Progressive opening of the Rheic Ocean led to the drifting away of one or several ribbon terranes, generally ascribed to Avalonia, and inaugurated a passive margin stage on the newly formed margin of NW Gondwana. In Iberia, which remained on the Gondwanan side of the ocean, the rift to drift transition is recorded in the Ossa Morena Zone in latest...

The Valdediezma Limestone is a recently discovered isolated shallow-water platform developed in the core of the Picos de Europa Province. Most of the Valdediezma Limestone is assigned to the late Viséan (from the Mikhailovian) up to the early Bashkirian (Krasnopolyanian?).

The Viséan/Serpukhovian Boundary is located in the Canalón Member of the Alba Formation based on the first occurrence of Lochriea ziegleri above other important conodont index species such as L. monodonosa (Rhodes, Austin and Druce, 1969), L. binodosa JI, 1986, L. nodosa (Bischoff, 1957) and L. multinodosa (Wirth, 1967).

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...

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...

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...

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...

The late Viséan to early Bashkirian shallow-water carbonate Valdediezma Platform in the Picos de Europa Province of the Cantabrian Zone, has been subdivided into eight microbiotic intervals by means of similarity clusters (using the Morisita coefficient). The most complete Viséan-Bashkirian interval is represented in the Valdediezma Valley – Jitu l...

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...

A new Mississippian to early Bashkirian shallow-water carbonate platform, the Valdediezma Limestone, is identified in the central–eastern part of the Picos de Europa tectonic unit of the Cantabrian Mountains. The oldest beds (probably late Tournaisian or early Viséan) are faulted above middle Cambrian rocks. Biostratigraphy based on conodont and fo...

El Misisípico (Carbonífero inferior) del norte de España está registrado en facies de calizas nodulares con cefalópodos. Concretamente en las Montañas Cantábricas, la Formación Alba está constituida por una sucesión condensada de 20–30 metros de calizas nodulares rojas que corresponden a una sedimentación profunda entre el final del Tournaisiense y...

The timing of the final collision of Laurentia and Gondwana as well as the disappearance of the gateway between the Rheic and Tethyan oceans are quite controversial and poorly established. Accurate constraints on the gateway closure are vitally important for the understanding of global sea-level fluctuations, ocean circulation, regional and global...

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...

Nodular cephalopod limestone facies show a ubiquitous distribution in the Mississippian of the Variscan foreland basin in the northern Spain (from the Cantabrian Mountains to the Pyrenees). It yields abundant conodonts studied by a lot of authors (Lane et al., 1980; Higgins and Wagner-Gentis, 1985; among others). The occurrence of derived shallow-w...

The southern margin of the Askrigg Block around Cracoe, North Yorkshire, shows a transition from carbonate ramp to reef-rimmed shelf margin, which, based on new foraminiferal/algal data, is now constrained to have initiated during the late Asbian. A late Holkerian to early Asbian ramp facies that included small mudmounds developed in comparatively...

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...

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...

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...

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...

The Serpukhovian coral assemblages from Idmarrach and Tirhela formations (Adarouch, Morocco) have been studied. They yielded quite diverse assemblages with a total of 32 rugose and 1 tabulate species. The distribution of corals in the sections Idmarrach 1, 2, 3, and 4 and Tirhela 1 and 2 has been established, which include Serpukhovian and Bashkiri...

A continuous succession of the upper part of the Alba Formation is recorded in the Vegas de Sotres section in the Cantabrian Mountains, northern Spain. This section contains slightly shallower-water facies than elsewhere and as a result is particularly rich in foraminifers. Characterization of the late Visean to Serpukhovian interval in coeval deep...

A rationalized lithostratigraphy for the Great Scar Limestone Group of the southeast Askrigg Block is established. The basal Chapel House Limestone Formation, assessed from boreholes, comprises shallow-marine to supratidal carbonates that thin rapidly northwards across the Craven Fault System, onlapping a palaeotopographical high of Lower Palaeozoi...

The coral content of the Visean rocks from the Guadiato Area (SW Spain) have been studied during the last 25 years. Part of the coral assemblages have been previously described, but never as whole. The 69 recorded coral species belonging to Rugosa, Tabulata and Heterocorallia are illustrated. The family Antiphyllidae is represented by two genera an...

A revision of the late Mississippian (late Viséan-early Serpukhovian) cyanobacterial and algal assemblages of Montagne Noire (Aude-Hérault, France) is undertaken, mainly based on new data recently obtained with the foraminiferal assemblages of this area. In this taxonomic contribution, one tribe Borlatellae trib. nov. is translated, and three new g...

Revision of several important Carboniferous stratigraphic successions in basins in the Saharan Platform allows us to propose distinct biostratigraphical boundaries for the upper Viséan, lower and upper Serpukhovian and lower Bashkirian, with the latter boundary separating upper Mississippian from lower Pennsylvanian strata. The boundaries are not o...

A detailed study of foraminiferal assemblages recorded in limestones from northern England in the Stainmore Trough and Alston Block permits their assignment to different European substages than in previous studies. Comparisons with foraminiferal assemblages, mostly from Russia, allow the biozonations to be correlated with the Viséan, Serpukhovian a...

The Vegas de Sotres section (Cantabrian Mountains, Northern Spain) spans a continuous record of upper Viséan-Serpukhovian (Mississippian) marine carbonates. It contains distinctive bioclastic pale grey nodular and black limestones of the upper part of the Alba Formation, representative of more shallower-water facies than the classically described d...

Recibido: 15-diciembre-2015. Aceptado: 15-marzo-2016.Publicado en formato electrónico: 30-marzo-2016. Palabras clave: Sistemática, Rugosa, Tabulata, Carbonífero, Misisípico Marruecos.

Foraminiferal studies on late Mississippian (Serpukhovian) limestones from northern England allow a well-constrained correlation between the western European regional substages for the early Namurian (Pendleian, Arnsbergian and Chokierian) with the Russian regional substages for the international Serpukho vian (Tarusian, Steshevian, Protvian and Za...

Spatial and temporal variations of Carboniferous sediment accumulation within the northwestern part of the northern flank of the Tindouf Syncline in Saharan Morocco allowed to distinguish 16 lithofacies types. The predominant sedimentation pattern is cyclic, with the overall succession recording a major regressive trend. Outer platform siliciclasti...

The southern region of western Palaeotethys (Iberian Peninsula and North Africa) is important for understanding relationships between the Palaeotethys and Rheic oceans and between Laurasia and Gondwana during the Carboniferous. Rugose and tabulate corals are common in Upper Mississippian (Viséan and Serpukhovian) rocks from this area, and their dis...

A rich rugose coral assemblage has been recorded from a biostrome at the top of the Djebel Ouarkziz Fm. in the Tindouf Basin, S. Morocco. It is composed of 10 genera and 14 species, of which 5 are new: Dibunophyllum bipartitum, Arachnolasma sp., Palaeosmilia murchisoni, Palaeosmilia ressoti, Palastraea regia, Siphonodendron tindoufense sp. nov., Si...

The Carboniferous succession in the Tindouf Basin of southern Morocco, North Africa, displays Mississippian to Early Pennsylvanian marine beds, followed by Pennsylvanian continental deposits. The marine beds comprise a shallow water cyclic platform sequence, dominated by shales and fine-grained sandstones with thin but laterally persistent limeston...

The northern flank of the Tindouf Syncline in southern Morocco exhibits a continuous, well exposed Carboniferous succession with limestones of Late Asbian to Early Bashkirian age containing rich and diverse foraminiferal and rugose coral assemblages. Anal‑ ysis of these assemblages provides new data on the relatively poorly known Saharan basins. Th...

The Djebel Ouarkziz Formation, located in the northern part of the Tindouf Basin, in western Algeria and southern Morocco, is composed mainly of shales with interbedded limestones, dolostones and sandstones. The limestone beds are relatively thin, but are laterally persistent, and can be followed along strike for tens of kilometres. We have identif...

Analysis of Mississippian coral assemblages from the Khenifra region of Central Morocco together with data from foraminiferal/algal microfossils has established new age dating of 5 localities within the Azrou–Khenifra Basin: Souk El Had and Sidi Lamine, where corals occur mainly in biostromes protected by oolitic shoals, Tabainout, where corals hav...

Analysis of Mississippian coral assemblages from the Khenifra region of Central Morocco together with data from foraminiferal/algal microfossils has established new age dating of 5 localities within the Azrou–Khenifra Basin: Souk El Had and Sidi Lamine, where corals occur mainly in biostromes protected by oolitic shoals, Tabainout, where corals hav...

The northern flank of the Tindouf Syncline in southern Morocco exhibits a continuous, well exposed Carboniferous succession with limestones of Late Asbian to Early Bashkirian age containing rich and diverse foraminiferal and rugose coral assemblages. Analysis of these assemblages provides new data on the relatively poorly known Saharan basins. The...

The excellent exposure and preservation of a fringing reef located at Tiouinine, near Khenifra (Central Moroccan Meseta) is a unique case in the Mississippian which allows us to distinguish different facies belts of a classical coral framework reef. The reefal facies rest on thin basal siliciclastic rocks which rest unconformably on Ordovician sand...

The foraminiferal superfamily Biseriamminaceae consists of the families Biseriamminidae (agglutinated wall) and Globivalvulinidae (secreted wall). The ancestral genus Biseriammina is endemic to the Urals, where its stratigraphic range is now extended from the Tournaisian into the early Visean, due to the inclusion of Lipinella within the genus. Oth...

The upper half of the Archerbeck Borehole contains a continuous Mississippian succession from the late Asbian (late Viséan) to the Pendleian (early Serpukhovian), with numerous limestone horizons. The borehole sequence lies within the Solway Basin (western end of the Northumberland Trough) and bridges the successions between the Midland Valley of S...

Analysis of Mississippian coral assemblages from the Khenifra region of Central Morocco has demonstrated the presence of a rich and diverse coral fauna. Rugose coral assemblages from the Tabainout mud-mound complex comprise abundant colonial and solitary taxa, particularly in the basal bedded limestones, as well as the upper bedded flank and coquin...

—The Carboniferous succession in Adarouch (Central Morocco, north of the Atlas Transform Fault) contains thick carbonate beds including upper Visean, Serpukhovian and basal Bashkirian rocks. Foraminifers enable precise recognition of the Visean/Serpukhovian (V/S), early/late Serpukhovian (eS/lS) and Serpukhovian/ Bashkirian (S/B) boundaries. Insole...

Carboniferous rocks totalling 3442 m in thickness were drilled in the Seal Sands No. 1 Borehole at Teesmouth, Cleveland, in 1974-75. Cores taken in the middle and towards the bottom of the Carboniferous section show that the strata are broadly horizontal so the thicknesses drilled are close to true stratigraphical thicknesses. The borehole passed t...