{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T21:02:50Z","timestamp":1768338170685,"version":"3.49.0"},"reference-count":26,"publisher":"MathDoc\/Centre Mersenne","issue":"16","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>L'\u00e9tude d'une nouvelle coupe dans les phtanites \u00e0 graptolites du Silurien des Fresnaies \u00e0 Chalonnes-sur-Loire (Sud-Est du Massif armoricain) montre, pour la premi\u00e8re fois, que ces phtanites (1) succ\u00e8dent en concordance \u00e0 des niveaux glaciomarins de l'Ordovicien terminal (Hirnantien) et (2) livrent des assemblages successifs de graptolites, qui caract\u00e9risent la base du Silurien, l'ensemble des \u00e9tages Rhuddanien et A\u00e9ronien et la partie inf\u00e9rieure du Telychien.<\/jats:p>","DOI":"10.1016\/s1631-0713(02)01864-3","type":"journal-article","created":{"date-parts":[[2002,12,30]],"date-time":"2002-12-30T13:18:07Z","timestamp":1041254287000},"page":"1177-1183","source":"Crossref","is-referenced-by-count":15,"title":["Le passage Ordovicien\u2013Silurien et la partie inf\u00e9rieure du Silurien (Sud-Est du Massif armoricain, France)"],"prefix":"10.5802","volume":"334","author":[{"given":"Jos\u00e9 Manuel","family":"Pi\u00e7arra","sequence":"first","affiliation":[]},{"given":"Michel","family":"Robardet","sequence":"additional","affiliation":[]},{"given":"Ahmed","family":"Bourahrouh","sequence":"additional","affiliation":[]},{"given":"Florentin","family":"Paris","sequence":"additional","affiliation":[]},{"given":"Z\u00e9lia","family":"Pereira","sequence":"additional","affiliation":[]},{"given":"Jean","family":"Le\u00a0Menn","sequence":"additional","affiliation":[]},{"given":"R\u00e9my","family":"Gourvennec","sequence":"additional","affiliation":[]},{"given":"Tom\u00e1s","family":"Oliveira","sequence":"additional","affiliation":[]},{"given":"Hubert","family":"Lardeux","sequence":"additional","affiliation":[]}],"member":"3842","published-online":{"date-parts":[[2002,12,1]]},"reference":[{"key":"key2025102216105323504_1","first-page":"75","article-title":"M\u00e9moire sur la distribution des Graptolites en France","volume":"20","author":"Barrois, C.","year":"1892","unstructured":"[1] Barrois, C. M\u00e9moire sur la distribution des Graptolites en France, Ann. Soc. G\u00e9ol. Nord, Volume 20 (1892), pp. 75-191","journal-title":"Ann. Soc. G\u00e9ol. Nord"},{"key":"key2025102216105323504_2","unstructured":"[2] C. Beaup\u00e8re, Contribution \u00e0 l'\u00e9tude de la flore fossile du \u00ab Culm \u00bb du synclinal d'Ancenis, th\u00e8se de 3e cycle, universit\u00e9 Paris-6, 1973, 111 p"},{"key":"key2025102216105323504_3","unstructured":"[3] A. Bourahrouh, Chitinozoaires et palynomorphes de l'Ordovicien sup\u00e9rieur nord-gondwanien : impact de la glaciation ashgillienne, th\u00e8se, universit\u00e9 Rennes-1, 2002 (n\u2218 d'ordre 2602), 300 p"},{"key":"key2025102216105323504_4","author":"Cavet, P.","year":"1970","unstructured":"[4] Cavet, P.; Arnaud, A.; Barbaroux, L.; Blaise, J.; Bross\u00e9, R.; Chauris, L.; Gruet, M.; Lardeux, H.; Rivi\u00e8re, L.-M. Notice explicative de la feuille Chalonnes-sur-Loire \u00e0 1:50000 (n\u2218 453), \u00c9ditions BRGM, 1970 (32 p)","journal-title":"Notice explicative de la feuille Chalonnes-sur-Loire \u00e0 <span class=\"mathjax-formula\" data-tex=\"$ \\mathrm{1\\; :50}\\text{\\hspace{0.17em}}\\mathrm{000}$\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mrow><mn>1<\/mn><mspace width=\"0.277778em\"\/><mo>:<\/mo><mn>50<\/mn><mspace width=\"1.69998pt\"\/><mn>000<\/mn><\/mrow><\/math><\/span> (n<sup>\u2218<\/sup> 453)"},{"key":"key2025102216105323504_5","first-page":"199","article-title":"Ordovicien et Silurien aux environs de Montjean et Chalonnes (Maine-et-Loire, Sud-Est du Massif armoricain)","volume":"73","author":"Cavet, P.","year":"1971","unstructured":"[5] Cavet, P.; Lardeux, H.; Philippot, A. Ordovicien et Silurien aux environs de Montjean et Chalonnes (Maine-et-Loire, Sud-Est du Massif armoricain), M\u00e9m. BRGM, Volume 73 (1971), pp. 199-212","journal-title":"M\u00e9m. BRGM"},{"key":"key2025102216105323504_6","first-page":"199","article-title":"Contribution \u00e0 l'\u00e9tude g\u00e9ologique des environs de Chalonnes-sur-Loire (Maine-et-Loire). Terrain Silurien sup\u00e9rieur","author":"Davy, L.P.","year":"1895","unstructured":"[6] Davy, L.P. Contribution \u00e0 l'\u00e9tude g\u00e9ologique des environs de Chalonnes-sur-Loire (Maine-et-Loire). Terrain Silurien sup\u00e9rieur, Bull. Soc. Sci. Nat. Ouest de la France, 5e ann\u00e9e (1895), pp. 199-204","journal-title":"Bull. Soc. Sci. Nat. Ouest de la France, 5<sup>e<\/sup> ann\u00e9e"},{"key":"key2025102216105323504_7","first-page":"91","article-title":"Ce que l'on croit savoir aujourd'hui sur la constitution g\u00e9ologique des environs de Chalonnes-sur-Loire","author":"Davy, L.","year":"1905","unstructured":"[7] Davy, L. Ce que l'on croit savoir aujourd'hui sur la constitution g\u00e9ologique des environs de Chalonnes-sur-Loire, Bull. Soc. Et. Sci. Angers, 35e ann\u00e9e (1905), pp. 91-125","journal-title":"Bull. Soc. Et. Sci. Angers, 35<sup>e<\/sup> ann\u00e9e"},{"key":"key2025102216105323504_8","unstructured":"[8] H. Diot, Recherches structurales dans la partie orientale du Domaine lig\u00e9rien (Massif armoricain), th\u00e8se 3e cycle, universit\u00e9 de Nantes, 1980, 154 p"},{"key":"key2025102216105323504_9","first-page":"1455","article-title":"Hypoth\u00e8se sur la mise en place, au Dinantien, du complexe du Tombeau-Leclerc (Bassin d'Ancenis, sud-est du Massif armoricain) sous forme d'un olistostrome. Cons\u00e9quences g\u00e9odynamiques","volume":"290","author":"Dubreuil, M.","year":"1980","unstructured":"[9] Dubreuil, M. Hypoth\u00e8se sur la mise en place, au Dinantien, du complexe du Tombeau-Leclerc (Bassin d'Ancenis, sud-est du Massif armoricain) sous forme d'un olistostrome. Cons\u00e9quences g\u00e9odynamiques, C. R. Acad. Sci. Paris, Ser. D, Volume 290 (1980), pp. 1455-1458","journal-title":"C. R. Acad. Sci. Paris, Ser. D"},{"key":"key2025102216105323504_10","unstructured":"[10] M. Dubreuil, \u00c9volution g\u00e9odynamique du Pal\u00e9ozo\u0131\u0308que lig\u00e9rien (Massif armoricain), th\u00e8se d'\u00c9tat, universit\u00e9 de Nantes, 1986, 258 p"},{"issue":"2","key":"key2025102216105323504_11","doi-asserted-by":"crossref","first-page":"215","DOI":"10.2113\/gssgfbull.III.2.215","article-title":"Le bassin en d\u00e9crochement de Saint-Julien-de-Vouvantes-Angers (Carbonif\u00e8re inf\u00e9rieur du Sud-Est du Massif armoricain)","volume":"III","author":"Dubreuil, M.","year":"1987","unstructured":"[11] Dubreuil, M. Le bassin en d\u00e9crochement de Saint-Julien-de-Vouvantes-Angers (Carbonif\u00e8re inf\u00e9rieur du Sud-Est du Massif armoricain), Bull. Soc. g\u00e9ol. France (8), Volume III (1987) no. 2, pp. 215-221","journal-title":"Bull. Soc. g\u00e9ol. France (8)"},{"key":"key2025102216105323504_12","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1111\/j.1502-3931.1996.tb01837.x","article-title":"Generalized graptolite zonal sequence defining Silurian time intervals for paleogeographic studies","volume":"29","author":"Koren, T.N.","year":"1996","unstructured":"[12] Koren, T.N.; Lenz, A.C.; Loydell, D.K.; Melchin, M.J.; Storch, P.; Teller, L. Generalized graptolite zonal sequence defining Silurian time intervals for paleogeographic studies, Lethaia, Volume 29 (1996), pp. 59-60","journal-title":"Lethaia"},{"key":"key2025102216105323504_13","first-page":"152","author":"Lardeux, H.","year":"1994","unstructured":"[13] Lardeux, H.; Cavet, P. Paleozoic of the Ligerian Domain (Keppie, J.D., ed.), Pre-Mesozoic Geology in France and Related Areas, Springer Verlag, 1994, pp. 152-156","journal-title":"Paleozoic of the Ligerian Domain"},{"key":"key2025102216105323504_14","first-page":"181","article-title":"\u00c9volution g\u00e9ologique du Massif armoricain au cours des temps ordoviciens, siluriens et d\u00e9voniens","volume":"243","author":"Lardeux, H.","year":"1977","unstructured":"[14] Lardeux, H.; Chauvel, J.-J.; Henry, J.-L.; Morzadec, P.; Paris, F.; Racheboeuf, P.; Robardet, M. \u00c9volution g\u00e9ologique du Massif armoricain au cours des temps ordoviciens, siluriens et d\u00e9voniens, Colloques internationaux CNRS, Volume 243 (1977), pp. 181-192","journal-title":"Colloques internationaux CNRS"},{"key":"key2025102216105323504_15","first-page":"31","article-title":"Le Massif armoricain","volume":"44","author":"Le Corre, C.","year":"1991","unstructured":"[15] Le Corre, C.; Auvray, B.; Ball\u00e8vre, M.; Robardet, M. Le Massif armoricain, Sci. G\u00e9ol. Bull., Volume 44 (1991), pp. 31-103","journal-title":"Sci. G\u00e9ol. Bull."},{"key":"key2025102216105323504_16","doi-asserted-by":"crossref","first-page":"1121","DOI":"10.2113\/gssgfbull.S7-XIX.5.1121","article-title":"Pal\u00e9og\u00e9ographie et relations ib\u00e9ro-armoricaines au Pal\u00e9ozo\u0131\u0308que ante-Carbonif\u00e8re","volume":"19","author":"Paris, F.","year":"1977","unstructured":"[16] Paris, F.; Robardet, M. Pal\u00e9og\u00e9ographie et relations ib\u00e9ro-armoricaines au Pal\u00e9ozo\u0131\u0308que ante-Carbonif\u00e8re, Bull. Soc. g\u00e9ol. France (7), Volume 19 (1977), pp. 1121-1126","journal-title":"Bull. Soc. g\u00e9ol. France (7)"},{"key":"key2025102216105323504_17","first-page":"133","author":"Paris, F.","year":"1994","unstructured":"[17] Paris, F.; Robardet, M. The Variscan Orogeny in the Armorican Massif, Introduction (Keppie, J.D., ed.), Pre-Mesozoic Geology in France and Related Areas, Springer Verlag, 1994, pp. 133-135","journal-title":"The Variscan Orogeny in the Armorican Massif, Introduction"},{"key":"key2025102216105323504_18","first-page":"171","volume":"77","author":"Paris, F.","year":"1995","unstructured":"[18] Paris, F.; Elaouad-Debbaj, Z.; Jaglin, J.-C.; Massa, D.; Oulebsir, L. Chitinozoans and Late Ordovician Glacial events on Gondwana (Cooper, J.C.; Droser, M.L.; Finney, S., eds.), Ordovician Odyssey: short papers for the 7th ISOS, Las Vegas, 77, Pacific Section Society for Sedimentary Geology, 1995, pp. 171-176","journal-title":"Chitinozoans and Late Ordovician Glacial events on Gondwana"},{"key":"key2025102216105323504_19","doi-asserted-by":"crossref","first-page":"84","DOI":"10.1016\/S0034-6667(00)00054-3","article-title":"The effects of the final stages of the Late Ordovician glaciation on marine palynomorphs (chitinozoa, acritarchs, leiospheres) in well Nl.2 (NE Algerian Sahara)","volume":"113","author":"Paris, F.","year":"2000","unstructured":"[19] Paris, F.; Bourahrouh, A.; Le H\u00e9riss\u00e9, A. The effects of the final stages of the Late Ordovician glaciation on marine palynomorphs (chitinozoa, acritarchs, leiospheres) in well Nl.2 (NE Algerian Sahara), Rev. Palaeobot. Palynol., Volume 113 (2000), pp. 84-104","journal-title":"Rev. Palaeobot. Palynol."},{"key":"key2025102216105323504_20","first-page":"48","article-title":"Pr\u00e9sence du genre Retiolites (Graptolithid\u00e9s) dans les phtanites de l'Anjou","volume":"64","author":"P\u00e9neau, J.","year":"1934","unstructured":"[20] P\u00e9neau, J. Pr\u00e9sence du genre Retiolites (Graptolithid\u00e9s) dans les phtanites de l'Anjou, Bull. Soc. Et. Sci. Angers, n.s., Volume 64 (1934), pp. 48-52","journal-title":"Bull. Soc. Et. Sci. Angers, n.s."},{"key":"key2025102216105323504_21","first-page":"1","article-title":"Les Graptolites du Massif armoricain. \u00c9tude stratigraphique et pal\u00e9ontologique","volume":"11","author":"Philippot, A.","year":"1950","unstructured":"[21] Philippot, A. Les Graptolites du Massif armoricain. \u00c9tude stratigraphique et pal\u00e9ontologique, M\u00e9m. Soc. g\u00e9ol. min\u00e9ral. Bretagne, Volume 11 (1950), pp. 1-295","journal-title":"M\u00e9m. Soc. g\u00e9ol. min\u00e9ral. Bretagne"},{"key":"key2025102216105323504_22","first-page":"86","article-title":"First evidence of the basal Llandovery <span class=\"italique\">Parakidograptus acuminatus<\/span> graptolite Biozone in the Armorican Massif (western France). Palaeontology Down Under 2000","volume":"61","author":"Pi\u00e7arra, J.-M.","year":"2000","unstructured":"[22] Pi\u00e7arra, J.-M.; Robardet, M.; Paris, F.; Lardeux, H.; Guti\u00e9rrez-Marco, J.-C. First evidence of the basal Llandovery Parakidograptus acuminatus graptolite Biozone in the Armorican Massif (western France). Palaeontology Down Under 2000, Geol. Soc. Austr. Abstr., Volume 61 (2000), pp. 86-88","journal-title":"Geol. Soc. Austr. Abstr."},{"key":"key2025102216105323504_23","first-page":"19","article-title":"Le Culm frasno-dinantien du synclinal d'Ancenis (SE du Massif armoricain) au nord de la Loire","volume":"9","author":"Rivi\u00e8re, J.-M.","year":"1977","unstructured":"[23] Rivi\u00e8re, J.-M. Le Culm frasno-dinantien du synclinal d'Ancenis (SE du Massif armoricain) au nord de la Loire, Bull. Soc. g\u00e9ol. min\u00e9ral. Bretagne C, Volume 9 (1977), pp. 19-57","journal-title":"Bull. Soc. g\u00e9ol. min\u00e9ral. Bretagne C"},{"key":"key2025102216105323504_24","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1016\/0031-0182(88)90078-8","article-title":"The Late Ordovician diamictic formations from southwestern Europe: north-Gondwana glaciomarine deposits","volume":"66","author":"Robardet, M.","year":"1988","unstructured":"[24] Robardet, M.; Dor\u00e9, F. The Late Ordovician diamictic formations from southwestern Europe: north-Gondwana glaciomarine deposits, Palaeogeogr. Palaeoclimatol. Palaeoecol., Volume 66 (1988), pp. 19-31","journal-title":"Palaeogeogr. Palaeoclimatol. Palaeoecol."},{"key":"key2025102216105323504_25","first-page":"3","article-title":"Le Pal\u00e9ozo\u0131\u0308que ant\u00e9-varisque de France, contexte pal\u00e9og\u00e9ographique et g\u00e9odynamique","author":"Robardet, M.","year":"1994","unstructured":"[25] Robardet, M.; Verniers, J.; Feist, R.; Paris, F. Le Pal\u00e9ozo\u0131\u0308que ant\u00e9-varisque de France, contexte pal\u00e9og\u00e9ographique et g\u00e9odynamique, G\u00e9ol. France (1994), pp. 3-31","journal-title":"G\u00e9ol. France"},{"key":"key2025102216105323504_26","doi-asserted-by":"crossref","first-page":"651","DOI":"10.1017\/S0016756800018896","article-title":"A global Chitinozoa biozonation for the Silurian","volume":"132","author":"Verniers, J.","year":"1995","unstructured":"[26] Verniers, J.; Nestor, V.; Paris, F.; Dufka, P.; Sutherland, S.; Van Grootel, G. A global Chitinozoa biozonation for the Silurian, Geol. Mag., Volume 132 (1995), pp. 651-666","journal-title":"Geol. Mag."}],"container-title":["Comptes Rendus. G\u00e9oscience"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/comptes-rendus.academie-sciences.fr\/geoscience\/item\/10.1016\/S1631-0713(02)01864-3.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,22]],"date-time":"2025-10-22T14:11:16Z","timestamp":1761142276000},"score":1,"resource":{"primary":{"URL":"https:\/\/comptes-rendus.academie-sciences.fr\/geoscience\/articles\/10.1016\/S1631-0713(02)01864-3\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2002,12,1]]},"references-count":26,"journal-issue":{"issue":"16","published-online":{"date-parts":[[2002]]}},"alternative-id":["10.1016\/S1631-0713(02)01864-3"],"URL":"https:\/\/doi.org\/10.1016\/s1631-0713(02)01864-3","relation":{},"ISSN":["1631-0713","1778-7025"],"issn-type":[{"value":"1631-0713","type":"print"},{"value":"1778-7025","type":"electronic"}],"subject":[],"published":{"date-parts":[[2002,12,1]]}}}