The geology of Vietnam : A brief summary and problems The geology of Vietnam : A brief summary and problems

    • Tran Ngoc Nam NAM Tran Ngoc
    • Institute of Geosciences, Shizuoka University:(Present address)Geological Institute, Faculty of Science, The University of Tokyo

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Abstract

The territory of Vietnam is divided into five structural blocks : Northeast (NE), Northwest (NW), Truongson, Kontum and Nambo. The NE block is a part of the South China plate, in which strata and igneous rocks have been found dating from the Early Paleozoic to the Quaternary. The NW and Truongson blocks are regarded as NW-SE trending Paleozoic folded systems filled with thick (>12000 m) Paleozoic formations. Precambrian strata are widespread in the Red River fault zone and Fansipan range in the NW block, and in the Kontum block. Archean rocks are found only in the Kontum block, which is regarded as a stable massif without Paleozoic sedimentary rocks. The Nambo block is covered with a very thick (>6000 m) sequence of Cenozoic formations deposited in a continental rift. During the Mesozoic many such graben structures were formed and become basins for sedimentation. Igneous activity in Vietnam is divided into five episodes from the Archean to Quaternary. The most important impediments to the description and interpretation of geology in Vietnam are lack of reliable radiometric and structural data, and scarcity of good outcrops.

The territory of Vietnam is divided into five structural blocks : Northeast (NE), Northwest (NW), Truongson, Kontum and Nambo. The NE block is a part of the South China plate, in which strata and igneous rocks have been found dating from the Early Paleozoic to the Quaternary. The NW and Truongson blocks are regarded as NW-SE trending Paleozoic folded systems filled with thick (>12000 m) Paleozoic formations. Precambrian strata are widespread in the Red River fault zone and Fansipan range in the NW block, and in the Kontum block. Archean rocks are found only in the Kontum block, which is regarded as a stable massif without Paleozoic sedimentary rocks. The Nambo block is covered with a very thick (>6000 m) sequence of Cenozoic formations deposited in a continental rift. During the Mesozoic many such graben structures were formed and become basins for sedimentation. Igneous activity in Vietnam is divided into five episodes from the Archean to Quaternary. The most important impediments to the description and interpretation of geology in Vietnam are lack of reliable radiometric and structural data, and scarcity of good outcrops.

Journal

Geoscience reports of Shizuoka University   [List of Volumes]

Geoscience reports of Shizuoka University 22, 1-9, 1995-07  [Table of Contents]

Shizuoka University

Codes

  • NII Article ID (NAID) :
    110000413364
  • NII NACSIS-CAT ID (NCID) :
    AN00103190
  • Text Lang :
    ENG
  • Article Type :
    Departmental Bulletin Paper
  • Journal Type :
    大学紀要
  • ISSN :
    03886298
  • NDL Article ID :
    3636770
  • NDL Source Classification :
    ME61(地質・地史)
  • NDL Source Classification :
    ZM41(科学技術--地球科学)
  • NDL Call No. :
    Z15-319
  • Databases :
    NDL  NII-ELS  IR