We are grateful to the authors and publishers who granted us permission to reproduce illustrations from their books, articles, and journals. These sources are noted in the legends of the figures.Thanks are also due to Mr. Peter Grossman for the preparation of some of the illustrations, to Messrs. Shlomo Shoval, Eli Yariv, and Shalom Yariv for their help in preparing the typescript, to the librarians of the Department of Geology, Hebrew University, Miss Yon a Metzger and Mrs. Zelda Kolodner for their help in collecting the literature and lastly to our wives for their forbearance during the long period of the book's preparation.During the final preparation of the book, one of us (S. Y.) spent a sabbatical at the Instituto Venezolano de Investigaciones Cientificas (I. V.I.C.). He would like to acknowledge the contribution of discussions he had with colleagues from the Institute, and the secretarial help of Mrs.
We are grateful to the authors and publishers who granted us permission to reproduce illustrations from their books, articles, and journals. These sources are noted in the legends of the figures.Thanks are also due to Mr. Peter Grossman for the preparation of some of the illustrations, to Messrs. Shlomo Shoval, Eli Yariv, and Shalom Yariv for their help in preparing the typescript, to the librarians of the Department of Geology, Hebrew University, Miss Yon a Metzger and Mrs. Zelda Kolodner for their help in collecting the literature and lastly to our wives for their forbearance during the long period of the book's preparation.During the final preparation of the book, one of us (S. Y.) spent a sabbatical at the Instituto Venezolano de Investigaciones Cientificas (I. V.I.C.). He would like to acknowledge the contribution of discussions he had with colleagues from the Institute, and the secretarial help of Mrs.
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