Participant card :
Last name : Rio
First name : Michel
List of participations in accessible surveys [+] [-]
Bibliography (10) [+] [-]
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Cotillon P., Rigolot P., Coustillas F., Gaillard C., Laurin B., Liu J.D., Pannetier W., Pascal A. & Rio M. 1989. Pentes et bassins au large de la Nouvelle Calédonie (Sud-Ouest Pacifique). morphologie, environnements biosédimentaires, sédimentation. Oceanologica Acta 12(2): 131-140
Abstract [+] [-]Submarine slopes and basins off New-Caledonia (South-Western Pacifie); morphology, biosedimentary environments, sedimentation During the Biocal deep-sea cruise off New-Caledonia, fauna and sediments were sampled and Seabeam maps were drawn. The first geological results are as follows: - block-faulting determines the morphology of the slopes, their erosion and the transport of sediments along them towards the Loyalty basin plain; - erosion is predominant in the studied areas of the western Caledonian slopes and along the slopes off Lifou island where the canyons are broad and scattered, whereas in front of the "passe de Thio", through the reefal barrier, a relatively high detritic influx transits through several narrow canyons; - the Loyalty basin has been explored along the Thio-Lifou transect; it exhibits a flat bottom and is fed mainly from the eastern Caledonian slopes by calcareous and argilaceous turbidites, which spread eastward over nearly 50 km and interfinger with hemipelagites; - the sediments are constituted by 5 distinct components: 15 to 50% of detritics from New-Caledonia (mainly clay minerais, iron oxydes and silicate minerais); 15 to 25% bioclastic silts and sands derived from the reefal ring and from the lagoon; mixed bioclasts ( 1 to 20%) furnished by benthonic communities living on the slopes and in the basin; planktonic debris (30 to 75%) with a dominant fraction composed of foraminifers and pteropods; and volcanic debris (0,5 to 10%). A sedimentation rate of about 6cm/1000 years (between 16000 and 5000 years B.P.)has been estimated from the explored sector of the Loyalty basin.
Accessible surveys cited (1) [+] [-] -
Cotillon P., Rigolot P., Coustillas F., Gaillard C., Laurin B., Liu J.D., Pannetier W., Pascal A. & Rio M. 1990. Pentes et bassins au lare de la Nouvelle-Calédonie (Sud-Ouest Pacific) morphologie, environnements biosédimentaires, sédimentation. Oceanologica Acta 12(2): 131-140
Abstract [+] [-]Submarine slopes and basins off New-Caledonia (South-Western Pacifie); morphology, biosedimentary environments, sedimentation During the Biocal deep-sea cruise off New-Caledonia, fauna and sediments were sampled and Seabeam maps were drawn. The first geological results are as follows: - block-faulting determines the morphology of the slopes, their erosion and the transport of sediments along them towards the Loyalty basin plain; - erosion is predominant in the studied areas of the western Caledonian slopes and along the slopes off Lifou island where the canyons are broad and scattered, whereas in front of the "passe de Thio", through the reefal barrier, a relatively high detritic influx transits through several narrow canyons; - the Loyalty basin has been explored along the Thio-Lifou transect; it exhibits a flat bottom and is fed mainly from the eastern Caledonian slopes by calcareous and argilaceous turbidites, which spread eastward over nearly 50 km and interfinger with hemipelagites; - the sediments are constituted by 5 distinct components: 15 to 50% of detritics from New-Caledonia (mainly clay minerais, iron oxydes and silicate minerais); 15 to 25% bioclastic silts and sands derived from the reefal ring and from the lagoon; mixed bioclasts ( 1 to 20%) furnished by benthonic communities living on the slopes and in the basin; planktonic debris (30 to 75%) with a dominant fraction composed of foraminifers and pteropods; and volcanic debris (0,5 to 10%). A sedimentation rate of about 6cm/1000 years (between 16000 and 5000 years B.P.) has been estimated from the explored sector of the Loyalty basin. Oceanologica Acta, 1989, 11, 2, 131-140.
Accessible surveys cited (1) [+] [-] -
Malochet-grivois C., Roussakis C., Robillard N., Biard J., Riou D., Debitus C. & Verbist J.F. 1992. Effects in vitro of two marine substances, chlorolissoclimide and dichlorolissoclimide ,on a non-small-cell bronchopulmonary carcinoma line (NSCLC-N6). Anti-Cancer Drug Design 7: 493-502
Abstract [+] [-]The antiproliferative activity of two nitrogenous labdane cytotoxic substances from Lissoclinum voeltzkowi Michaelson (Urochordata), dichlorolissoclimide (P2) and chlorolissoclimide (P1), was studied in vitro on a continuous human non small- cell bronchopulmonary carcinoma line (NSCLC-N6) at the cell cycle level. This antiproliferative effect resulted from a blockade of G1 phase cells. Mortality occurred, regardless of the degree of cell ploidy, with cell transition to an out-of-cycle situation characteristic of a G1D terminal maturation state.
Accessible surveys cited (6) [+] [-]
Associated collection codes: IT (Tunicates/ascidians) -
Pascal A., Rio M. & Vanney J.R. 1992. Les surfaces durcies des pentes bathyales de Nouvelle-Calédonie (Pacifique du SW). Morphologies et diagenèse. Bulletin de la société géologique de France 163(3): 271-280
Accessible surveys cited (3) [+] [-] -
Pascal F., Rio M. & Pascal A. 1991. LES SEDIMENTS ACTUELS ET RECENTS DANS LE BASSIN DES LOYAUTE, L'environnement carbonaté bathyal en Nouvelle-Calédonie (Programme Envimarges). 15. Lambert B. & Roux M. (eds):75-85
Abstract [+] [-]Les campagnes BIOCAL et BIOGEOCAL ont permis d'effectuer de nombreux prélèvements de sédiments récents dans le bassin des Loyauté à l'aide d'un carottier Usnel (KG) et d'un carottier Kullenberg (KK) (Fig. 1). La plupart d'entre eux se situe en bas des pentes et au centre du bassin. La partie haute des pentes a été rarement échantillonnée, mais en revanche, a fait l’objet d'observations directes lors de la campagne CALSUB (cf. Rio et al., ce volume). Au SW, le bassin est bordé par un récif barrière discontinu isolant un lagon relativement profond, tandis qu'au NE, l'atoll soulevé de Lifou ne possède que des récifs frangeants et un étroit palier littoral avant l'amorce du talus très pentu (cf. Roux, ce volume). Les résultats de la campagne BIOCAL (Cotillon et al., 1989b) ont indiqué que la sédimentation récente depuis 30.000 ans est constituée de boues hémipélagiques fines interrompues par des niveaux bioclastiques resédimentés. Nous présentons ici une analyse plus complète de la distribution des composants carbonatés dans les sédiments profonds, afin d'en cerner les différentes origines et d'apporter des informations supplémentaires sur la dynamique sédimentaire.
Accessible surveys cited (3) [+] [-] -
Rio M., Roux M. & Guerin H. 1991. LE SUBSTRAT GEOLOGIQUE ET LES PROCESSUS SEDIMENTAIRES SUR LES PENTES BATHYALES OBSERVEES LORS DE LA CAMPAGNE CALSUB, L'environnement carbonaté bathyal en Nouvelle-Calédonie (Programme Envimarges). 15. Lambert B. & Roux M. (eds):57-73
Abstract [+] [-]L'observation directe, à l'aide de la soucoupe plongeante CYANA, des pentes bathyales néocalédoniennes révèle l'ampleur des phénomènes d'érosion (cf. Vanney, ce volume) qui entaillent le substratum géologique. Pour la première fois nous avons eu accès aux affleurements. Bien que l'échantillonnage de roches soit très réduit, une description même sommaire des unités géologiques rencontrées et de leurs relations est utile compte tenu de l'état actuel des connaissances. Les produits de l'érosion vont s'accumuler dans le bassin des Loyauté. Ils s'ajoutent aux apports planctoniques, aux éléments biogènes autochtones ou subautochtones, et aux sédiments issus de la plateforme pour constituer un mélange de matériaux de nature, d'origine et d'âge variés (cf. Lambert et al., ce volume, Fig. 1). Nous tenterons ici de cerner ces différences d'origine et d'apprécier leur importance. Nous décrirons aussi quelques modes de transport vers le bassin.
Accessible surveys cited (3) [+] [-] -
Roussakis C., Robillard N., Riou D., Biard J., Pradal P., Piloquet P., Debitus C. & Verbist J. 1991. Effects of bistramide A on a non-small-cell bronchial carcinoma line. Cancer Chemother Pharmacol 28: 283-292
Accessible surveys cited (6) [+] [-]
Associated collection codes: IT (Tunicates/ascidians) -
Roux M., Bouchet P., Bourseau J.P., Gaillard C., Grandperrin R., Guille A., Laurin B., Monniot C., Richer de forges B., Rio M., Segonzac M., Vacelet J. & Zibrowius H. 1991. L'environnement bathyal au large de la Nouvelle-Calédonie: résultats préliminaires de la campagne CALSUB et conséquences paléoécologiques. Bulletin, Société Géologique de France 162(4): 675–685
Abstract [+] [-]During the CALSUB cruise, bathyal environments were explored off the New Caledonia corallian platfdrms (southwestern Pacific). Green algae were observed down to a depth of 1 IO m, and red algae down to 145 m. Algal blocks, pebbles and sands contribute to sedimentation to a depth of 400 m and beyond, and are mixed with autochthonous fossils and bioclasts produced by bathyal benthos. Epibathyal fauna suggests similarities with Jurassic and Cretaceous fauna of Tethyan margins (Nautilus, pleurotomarian gastropods, sponges, brachiopods and crinoids…). Richness and abundance of the benthos are the highest in areas where currents are frequent between 300 m and 700 m (sometimes 10 to 20 terebratulid brachiopods per m2 or dense populations of echinoderms entirely covering the substrate). Such currents induce erosion of' substrate or bioclastic accumulations. Biocorrosion seems to be very active in erosion processes, especially on hard grounds. Burrows and traces show the importance of sediment bioturbation on slopes. The occurrence on bathyal slope of some taphonomic processes previously known from geological series and generally considered as closely related lo shallow-water environments should be emphasized.
Accessible surveys cited (1) [+] [-] -
Roux M., Bouchet P., Bourseau J.P., Gaillard C., Grandperrin R., Guille A., Laurin B., Monniot C., Richer de forges B., Rio M., Segonzac M., Vacelet J. & Zibrowius H. 1991. L'ETAGEMENT DU BENTHOS BATHYAL OBSERVE A L'AIDE DE LA SOUCOUPE CYANA, L'environnement carbonaté bathyal en Nouvelle-Calédonie (Programme Envimarges). 15. Lambert B. & Roux M. (eds):151-165
Abstract [+] [-]L'exploration de la faune profonde de NouvelleCalédonie a débuté par des campagnes d'essai de 1977 à 1979 sur des fonds de 200 m à 1000 m au large de la Grande Terre, de l'île des Pins et des îles Loyauté (Intès, 1978). A partir de 1985, elle s'est élargie et intensifiée avec les campagnes MUSORSTOM 4 à 6 et CHALCAL (Richer de Forges, 1990), BIOCAL, BIOGEOCAL et SMIB, complétées par des observations directes à l'aide de la soucoupe plongeante Cyana lors de la campagne CALSUB. Nous ne donnerons ici que les grands traits de l'étagement de la macrofaune et de la mégafaune benthique en insistant sur les observations directes insitu lors de la campagne CALSUB et sur la liaison avec les caractères du milieu.
Accessible surveys cited (1) [+] [-] -
Vanney J.R., Rio M., Roux M. & Guérin H. 1992. Morphologie sous-marine particulière liée à des circulations hydrothermales sur la ride des Loyauté (Nouvelle-Calédonie, SW Pacifique). Bulletin de la société géologique de France 163(3): 255-262
Abstract [+] [-]We report the discovery during CALSUB cruise of submarine features, including series of pillars and microtables cldsely related to Fe-Mn deposits entrapped into a soft or weakly cemented hemipelagic ooze, from a Tertiary volcanic ridge setting off New Caledonia. Such features seems to be closely related to hydrothermal circulation through calcareous sedimentation, as a consequence of the volcanic activity of Loyalty ridge during the Miocene time.
Accessible surveys cited (1) [+] [-]