Henri Coquand (1813, in

Aix-en-Provence Aix-en-Provence, or simply Aix, is a List of communes in France with over 20,000 inhabitants, city and Communes of France, commune in southern France, about north of Marseille. A former capital of Provence, it is the Subprefectures in France, s ...

– 1881, in

Marseille Marseille (; ; see #Name, below) is a city in southern France, the Prefectures in France, prefecture of the Departments of France, department of Bouches-du-Rhône and of the Provence-Alpes-Côte d'Azur Regions of France, region. Situated in the ...

) was a French

geologist A geologist is a scientist who studies the structure, composition, and History of Earth, history of Earth. Geologists incorporate techniques from physics, chemistry, biology, mathematics, and geography to perform research in the Field research, ...

and

paleontologist Paleontology, also spelled as palaeontology or palæontology, is the scientific study of the life of the past, mainly but not exclusively through the study of fossils. Paleontologists use fossils as a means to classify organisms, measure geolo ...

. In 1841 he obtained his doctorate in sciences in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

, and later served as a professor of geology at the University of

Besançon Besançon (, ; , ; archaic ; ) is the capital of the Departments of France, department of Doubs in the region of Bourgogne-Franche-Comté. The city is located in Eastern France, close to the Jura Mountains and the border with Switzerland. Capi ...

Poitiers Poitiers is a city on the river Clain in west-central France. It is a commune in France, commune, the capital of the Vienne (department), Vienne department and the historical center of Poitou, Poitou Province. In 2021, it had a population of 9 ...

and

.Prosopo
Sociétés savantes From his geological studies of southwestern France, he introduced the

Upper Cretaceous The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cret ...

stages: Coniacian,

Santonian The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya ( million years ago) and 83.6 ± 0.7 m ...

and

Campanian The Campanian is the fifth of six ages of the Late Cretaceous epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series. Campa ...

(1857). In 1871 he proposed the

Berriasian In the geological timescale, the Berriasian is an age/ stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 143.1 ±0.6 Ma and 137.05 ± 0.2 (million years ago) ...

stage of the

Lower Cretaceous Lower may refer to: * ''Lower'' (album), 2025 album by Benjamin Booker * Lower (surname) * Lower Township, New Jersey *Lower Receiver (firearms) * Lower Wick Gloucestershire, England See also * Nizhny {{Disambiguation ...

, named after Berrias, a town in the department of

Ardèche Ardèche (; , ; ) is a Departments of France, department in Auvergne-Rhône-Alpes, Southeastern France. It is named after the river Ardèche (river), Ardèche and had a population of 328,278 as of 2019.Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

Algeria Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. It is bordered to Algeria–Tunisia border, the northeast by Tunisia; to Algeria–Libya border, the east by Libya; to Alger ...

and

Morocco Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...

. In 1838 he founded the Muséum d'Aix in Aix-en-Provence. From 1862 to 1870 he was a correspondent member of the ''

Comité des travaux historiques et scientifiques The Comité des travaux historiques et scientifiques (CTHS) (''Committee for Historic and Scientific Works'') is a French research institution created by the Minister of Public Education François Guizot on 18 July 1834 for the purpose of 'leading ...

'', and from 1871 to 1881, he was a munincipal councillor in Marseille. The mineral " coquandite" commemorates his name; its chemical formula is Sb6O8(SO4)•(H2O).

Selected works

* ''Traité des roches considérées au point de vue de leur origine et de leur composition'', 1856 – Treatises on rocks considered from the point of view of their origins and compositions. * ''Description physique, géologique, paléontologique et minéralogique du département de la Charente'', 1856 – Physical, geological, paleontological and mineralogical descriptions of the department of

Charente Charente (; Saintongese: ''Chérente''; ) is a department in the administrative region of Nouvelle-Aquitaine, southwestern France. It is named after the river Charente, the most important and longest river in the department, and also the r ...

. * ''Géologie et paléontologie de la région sud de la province de Constantine'', 1862 – Geology and paleontology of the region south of Constantine Province. * ''Description géologique de la Province de Constantine'', 1864 – Geological description of Constantine Province. * ''Monographie de l'étage aptien de l'Espagne'', 1865 – Monograph on the

Aptian The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), S ...

stage of Spain. * ''Monographie du genre Ostrea. Terrain Crétacé'', 1869 – Monograph on the genus '' Ostrea'',

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

terrain.OCLC Classify
published works.

References

{{DEFAULTSORT:Coquand, Henri 1813 births 1881 deaths People from Aix-en-Provence French geologists French paleontologists Academic staff of Aix-Marseille University Academic staff of the University of Poitiers