Showing items related by title, author, creator and subject.

• THE SECOND GUADALUPIAN SYMPOSIUM AND PROBLEMS OF PERMIAN STRATIGRAPHY 

  Leven E.Ya.; Leonova T.B.; Kotlyar G.V. (1997)

  The article presents information on the Second Guadalupian Symposium in April 1996 and a meeting of the International Subcommission on Permian Stratigraphy held in its framework. The main subjects for discussion both at ...
• RADIOMETRIC AGE OF HYPERACIDIC VOLCANISM IN LATE-OROGENIC TROUGHS OF THE CHATKAL-KURAMA ZONE, CENTRAL TIEN SHAN 

  Volkov V.N.; Goltsman Yu.V.; Arakelyants M.M.; Zhuravlev D.Z.; Tadzhibaev G.T. (1997)

  The number and age of hyperacidic volcanism events in late-orogenic troughs of the Chatkal-Kurama structural zone are discussed on the basis of the radiometric dating. All K-Ar data available are used, including 90 original ...
• MASS EXTINCTIONS AND SEA-LEVEL CHANGES 

  Hallam A.; Wignall P.B. (1999)

  Review of sea-level changes during the big five mass extinctions and several lesser extinction events reveals that the majority coincide with large eustatic inflexions. The degree of certainty with which these eustatic ...