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Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science最新文献

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Découverte de l'Éocène continental autour de l'archipel de Kasserine, aux Jebels Rhéouis, Boudinar et Chamsi en Tunisie centro-méridionale : nouvelles implications paléogéographiques 在突尼斯中南部的Jebels rheis、Boudinar和Chamsi发现Kasserine群岛周围的大陆始新世:新的古地理意义
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-30 DOI: 10.1016/S1251-8050(01)01657-3
Fakher Jamoussi , Chedly Abbès , Emna Fakhfakh , Mourad Bédir , Samir Kharbachi , Mohamed Soussi , Fouad Zargouni , Alberto López-Galindo
{"title":"Découverte de l'Éocène continental autour de l'archipel de Kasserine, aux Jebels Rhéouis, Boudinar et Chamsi en Tunisie centro-méridionale : nouvelles implications paléogéographiques","authors":"Fakher Jamoussi ,&nbsp;Chedly Abbès ,&nbsp;Emna Fakhfakh ,&nbsp;Mourad Bédir ,&nbsp;Samir Kharbachi ,&nbsp;Mohamed Soussi ,&nbsp;Fouad Zargouni ,&nbsp;Alberto López-Galindo","doi":"10.1016/S1251-8050(01)01657-3","DOIUrl":"10.1016/S1251-8050(01)01657-3","url":null,"abstract":"<div><p>The Rhéouis and Boudinar Eocene outcrops located along the Tunisian ‘north–south axis’ show continental deposits similar to those already described in the west-central and meridional Atlas in the Jebel Chaambi and Chebket Bouloufa. The field investigations of these levels conduct to the discovery of Bulimes' terrestrial Gastropods known in the Mediterranean domain. The presence of palygorskite in the clay minerals confirms the emerged tendency of these deposits. The continental palaeogeography might have been induced by the Triassic halokinetic movements along the Atlasic anticlines.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 6","pages":"Pages 329-335"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01657-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72620624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Les relations entre le Soleil et la Terre 太阳和地球之间的关系
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-30 DOI: 10.1016/S1251-8050(01)01648-2
Gérard Thuillier
{"title":"Les relations entre le Soleil et la Terre","authors":"Gérard Thuillier","doi":"10.1016/S1251-8050(01)01648-2","DOIUrl":"10.1016/S1251-8050(01)01648-2","url":null,"abstract":"<div><p>The Earth's atmosphere evolution through geological times has induced significant changes in its composition. The properties of today's atmosphere, due in particular to the presence of oxygen, show strong evidence of the Sun–Earth relationship. The influence of solar activity will be presented, concerning the neutral and ionised atmosphere including the magnetosphere, the thermosphere down to the troposphere, and climate as well as the various consequences on our environment (space weather).</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 6","pages":"Pages 311-328"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01648-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73526892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First fossil record of the genus Pyramidelloides (Mollusca, Gastropoda, Eulimidae) discovered in the Eocene deposits of Alabama 阿拉巴马州始新世沉积物中发现的首个锥体属化石记录(软体动物，腹足动物，锥体动物科)
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-30 DOI: 10.1016/S1251-8050(01)01654-8
Pierre Lozouet , David T Dockery III
{"title":"First fossil record of the genus Pyramidelloides (Mollusca, Gastropoda, Eulimidae) discovered in the Eocene deposits of Alabama","authors":"Pierre Lozouet ,&nbsp;David T Dockery III","doi":"10.1016/S1251-8050(01)01654-8","DOIUrl":"10.1016/S1251-8050(01)01654-8","url":null,"abstract":"<div><p><em>Pyramidelloides dolini</em> n. sp., older strongly sculptured eulimid, is described from the Middle Eocene of southwestern Alabama (Gosport Sand). This new species probably had a planktotrophic larval stage similar to the recent Indo-West-Pacific species. Relationship with the species of the genus <em>Palisadia</em> is discussed. Geographic distributions of both the fossil and the recent species of the genera <em>Pyramidelloides</em> and <em>Palisadia</em> support finally a classic pattern in tropical marine biogeography: a discontinuous geographic range between Indo-Pacific and Caribbean provinces.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 6","pages":"Pages 351-356"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01654-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76077999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The impact of industrial pollution on the Jorf Lasfar coastal zone (Morocco, Atlantic Ocean): the mussel as an indicator of metal contamination 工业污染对约夫拉斯法尔海岸带(摩洛哥，大西洋)的影响:贻贝作为金属污染的指标
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-30 DOI: 10.1016/S1251-8050(01)01647-0
Aziz Kaimoussi , Abdelghani Chafik , Abdelkrim Mouzdahir , Salem Bakkas
{"title":"The impact of industrial pollution on the Jorf Lasfar coastal zone (Morocco, Atlantic Ocean): the mussel as an indicator of metal contamination","authors":"Aziz Kaimoussi ,&nbsp;Abdelghani Chafik ,&nbsp;Abdelkrim Mouzdahir ,&nbsp;Salem Bakkas","doi":"10.1016/S1251-8050(01)01647-0","DOIUrl":"10.1016/S1251-8050(01)01647-0","url":null,"abstract":"<div><p>The present study characterizes the effluents of the ‘Maroc Phosphore’ factories III and IV (of Jorf Lasfar coastal zone). The results show that the effluent (Cs/l) is very acid, very phosphate-rich, high in suspended matter and calcium-rich. Hydrological parameters indicate an important content of phosphates, especially in the stations located in the South of Cs/l. Tissues of mussel <em>Mytilus galloprovincialis</em> from the Jorf Lasfar zone present high concentrations of Cd and Cu.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 6","pages":"Pages 337-341"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01647-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86310617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 37
An azhdarchid pterosaur from the Upper Cretaceous of Cruzy (Hérault, France) Cruzy上白垩纪阿兹达奇翼龙(法国hsamrault)
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-30 DOI: 10.1016/S1251-8050(01)01630-5
Eric Buffetaut
{"title":"An azhdarchid pterosaur from the Upper Cretaceous of Cruzy (Hérault, France)","authors":"Eric Buffetaut","doi":"10.1016/S1251-8050(01)01630-5","DOIUrl":"10.1016/S1251-8050(01)01630-5","url":null,"abstract":"<div><p>Pterosaurs were hitherto represented in the abundant and varied Late Campanian–Early Maastrichtian vertebrate assemblages of southern France by very scanty remains, which did not allow an identification at the family level. An incomplete cervical vertebra from a locality of that age at Cruzy (Hérault, southern France) is described and identified as belonging to an azhdarchid pterosaur with an estimated wingspan of about 3 m.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 6","pages":"Pages 357-361"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01630-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73262113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Miocene to Quaternary adakites and related rocks in Western Philippine arc sequences 菲律宾西部弧层序中新世至第四纪埃达克岩及其相关岩石
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-30 DOI: 10.1016/S1251-8050(01)01644-5
Hervé Bellon , Graciano P Yumul Jr
{"title":"Miocene to Quaternary adakites and related rocks in Western Philippine arc sequences","authors":"Hervé Bellon ,&nbsp;Graciano P Yumul Jr","doi":"10.1016/S1251-8050(01)01644-5","DOIUrl":"10.1016/S1251-8050(01)01644-5","url":null,"abstract":"<div><p>Numerous Miocene to Quaternary occurrences of adakites and adakitic rocks are identified among the calc-alkaline magmatism from the Western Philippines. These rocks are associated with three different geodynamic frameworks, i.e. subduction, rifting (Macolod Corridor in Luzon) and collision (Palawan indentation of the Philippine archipelago). Slab, lower crust and sediment melting, coupled with assimilation-fractional crystallization, and mantle metasomatism by magmatic liquids are responsible for the generation of these rocks. The occurrence of the adakite–gold–copper relationship makes these areas good metallogenic exploration targets.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 6","pages":"Pages 343-350"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01644-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74687012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
L'unité ophiolitique du rio Magno en Corse alpine, élément des Ligurides de l'Apennin septentrional 科西嘉阿尔卑斯山脉Rio Magno的眼炎单元，亚平宁山脉北部利古里亚山脉的一部分
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-15 DOI: 10.1016/S1251-8050(01)01633-0
Elisa Padoa , Michel Durand-Delga
{"title":"L'unité ophiolitique du rio Magno en Corse alpine, élément des Ligurides de l'Apennin septentrional","authors":"Elisa Padoa ,&nbsp;Michel Durand-Delga","doi":"10.1016/S1251-8050(01)01633-0","DOIUrl":"https://doi.org/10.1016/S1251-8050(01)01633-0","url":null,"abstract":"<div><p>The Rio Magno unit (eastern Corsica) is represented by an Apenninic-type (Internal Ligurides) ophiolitic sequence: N-MORB basalts, Lower Cretaceous Palombini-bearing limestones, Middle Cretaceous flysch. In addition, it is unaffected by HP–LT alpine metamorphism. These peculiar features further support the hypothesis of close geodynamical relationships between the Corsican and Northern Apenninic ophiolites. We suggest that, in the Jurassic Piedmont-Ligurian oceanic basin, the Rio Magno and Internal Ligurides ophiolitic sequences represent a continuous, internal, oceanic palaeodomain. Afterwards, during Late Cretaceous–Late Eocene, they underwent a similar orogenic evolution, escaping from deep involvement during the subduction beneath the European continental margin.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 5","pages":"Pages 285-293"},"PeriodicalIF":0.0,"publicationDate":"2001-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01633-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Évolution du CO2 lors de la calcination d'un phosphate apatitique suivie d'une carbonatation par CO2 gazeux 磷酸磷灰石煅烧过程中CO2的演变，随后用气态CO2进行碳酸化
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-15 DOI: 10.1016/S1251-8050(01)01634-2
Pierre Blazy, Jean-Claude Samama
{"title":"Évolution du CO2 lors de la calcination d'un phosphate apatitique suivie d'une carbonatation par CO2 gazeux","authors":"Pierre Blazy,&nbsp;Jean-Claude Samama","doi":"10.1016/S1251-8050(01)01634-2","DOIUrl":"https://doi.org/10.1016/S1251-8050(01)01634-2","url":null,"abstract":"<div><p>The phenomena of decarbonatation and recarbonatation of the apatite have been studied on calcareous phosphate (Kasrik, Turkey) characterized by low contents of phosphate (14.6 % P<sub>2</sub>O<sub>5</sub>), sulfur (traces), organic matter (0.15 % C), chlorine (0.01 %) and magnesium (0.5 % MgO). The phosphate phase is made up of a carbonatofluoroapatite in which parameter <em>a</em> of the apatite lattice is equal to 9.341 Å. Thermograms show an important endothermicity, due to the loss of water and to the dissociation of carbonate. The exothermicity effect, connected with the burning of organic matter, compensates partly the endothermicity (the ore samples are crushed to a grain size of 400 μm). The calcination is operated in a muffle furnace at 950<!--> <!-->° and 1<!--> <!-->000<!--> <!-->°C for about 1 h. After roasting, quenching, washing and attriting, the calcined product is treated by gaseous CO<sub>2</sub>. During the calcination, parameter <em>a</em> increases from 9.341 to 9.351 Å, and after recarbonatation decreases from 9.351 to 9.347 Å, corresponding to a decrease of the apatitic CO<sub>2</sub> from 3.8 to 1.1 % and then to an increase to 2.1 %. In final analysis, it appears that the phenomena of thermal decarbonatation and, then, of recarbonatation after cooling, present important consequences on ore beneficiation technologies.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 5","pages":"Pages 271-276"},"PeriodicalIF":0.0,"publicationDate":"2001-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01634-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Mise en place syntectonique des minéralisations cuprifères du gı̂te d'Ifri (district du Haut Seksaoua, Haut Atlas occidental, Maroc) Ifri矿床（摩洛哥高阿特拉斯西部上Seksaoua区）铜矿化的联合构造构造布置
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-15 DOI: 10.1016/S1251-8050(01)01631-7
Abdelaziz Gaouzi , Alain Chauvet , Luc Barbanson , Lakhlifi Badra , Jean-Claude Touray , Saı̈d Oukarou , Mohamed El Wartiti
{"title":"Mise en place syntectonique des minéralisations cuprifères du gı̂te d'Ifri (district du Haut Seksaoua, Haut Atlas occidental, Maroc)","authors":"Abdelaziz Gaouzi ,&nbsp;Alain Chauvet ,&nbsp;Luc Barbanson ,&nbsp;Lakhlifi Badra ,&nbsp;Jean-Claude Touray ,&nbsp;Saı̈d Oukarou ,&nbsp;Mohamed El Wartiti","doi":"10.1016/S1251-8050(01)01631-7","DOIUrl":"https://doi.org/10.1016/S1251-8050(01)01631-7","url":null,"abstract":"<div><p>Structural and metallogenic studies of the Ifri copper deposit (western High Atlas, Morocco) demonstrate that a great part of the mineralization was linked to a stockwork developed during a Late-Variscan NNW-verging shearing event. With this significant result, the until now accepted syngenetic character for this mineralization has to be reconsidered and allows to suggest a new guide of prospection for this kind of deposit.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 5","pages":"Pages 277-284"},"PeriodicalIF":0.0,"publicationDate":"2001-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01631-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Mécanismes de génération de bruits telluriques dans la bande ultrabasse fréquence (UBF) : sources possibles des signaux dits «signaux électro-sismiques » (SES) 超低频带（UBF）大地噪声产生机制：称为“电地震信号”（SES）的信号的可能来源
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-15 DOI: 10.1016/S1251-8050(01)01639-1
Van Ngoc Pham , Danièle Boyer , Frédéric Perrier , Jean-Louis Le Mouël
{"title":"Mécanismes de génération de bruits telluriques dans la bande ultrabasse fréquence (UBF) : sources possibles des signaux dits «signaux électro-sismiques » (SES)","authors":"Van Ngoc Pham ,&nbsp;Danièle Boyer ,&nbsp;Frédéric Perrier ,&nbsp;Jean-Louis Le Mouël","doi":"10.1016/S1251-8050(01)01639-1","DOIUrl":"https://doi.org/10.1016/S1251-8050(01)01639-1","url":null,"abstract":"<div><p>Some anomalous transient electric signals in the ULF band, the so-called SES, are claimed to be earthquake precursors. However, their origin remains widely unknown. Anomalous signals having the same characteristics as the SES have been observed at the ‘Centre de recherche géophysique’ (CRG), Garchy (France) and their origin has now been clearly identified with the leakage of electric and phone networks of the CRG. They can be generated by two electrochemical mechanisms of the metallic electrode polarization: the galvanic cell and the AC electrolytic cell. These two mechanisms were controlled by field experiments, and their existence can be generalized and extrapolated to different scales. Any lack of insulation of grounded metallic bodies (underground electric and phone networks, pipelines, gas and water metallic conduits, railways, grounded towers of high power electric lines etc.) could lead to the generation of DC signals looking like the so-called SES. The greatest care must then be taken when claiming the existence of electric precursors of seismic or volcanic significance.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 5","pages":"Pages 255-262"},"PeriodicalIF":0.0,"publicationDate":"2001-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01639-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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