Collapse of ancient oceanic reef complex - what happened during collision of Akiyoshi Reef Complex? Geologic setting and age of Akiyoshi Terrane rocks on western Akiyoshi-dai Plateau

H. Sano, K. Kanmera

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Akiyoshi Terrane rocks in the marginal parts of the plateau, comprise broken limestone, limestone breccia, and scaly mudstone. The broken limestone is characterized by penetrative and pervasive destruction of skeletal grains and primary sedimentary fabrics. The Kasimovian, Gzhelian, Asselian, Sakmarian, and Artinskian Stages are identified in the broken limestone, but they show no orderly stratigraphic succession. The limestone breccia consists of angular unsorted, disorganized, polymictic limestone clasts with a rare argillaceous or calcareous matrix. The minimum age of the limestone breccia is assigned to the upper Maokouan, whereas older fusulines-yielding clasts coexist. The scaly mudstone is intensely sheared and contains limestone blocks, angular limestone debris, and limestone sandstone and conglomerate beds. The scaly mudstone is referable to the upper Middle to lowest Upper Permian. -from Authors

Original languageEnglish
Pages (from-to)113-133
Number of pages21
JournalJournal - Geological Society of Japan
Volume97
Issue number2
Publication statusPublished - Jan 1 1991

Fingerprint

Reefs
Limestone
terrane
reef
collision
Rocks
limestone
plateau
rock
breccia
mudstone
clast
Sakmarian
Sandstone
Debris
conglomerate
Permian
sandstone
matrix

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Engineering(all)
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "Akiyoshi Terrane rocks in the marginal parts of the plateau, comprise broken limestone, limestone breccia, and scaly mudstone. The broken limestone is characterized by penetrative and pervasive destruction of skeletal grains and primary sedimentary fabrics. The Kasimovian, Gzhelian, Asselian, Sakmarian, and Artinskian Stages are identified in the broken limestone, but they show no orderly stratigraphic succession. The limestone breccia consists of angular unsorted, disorganized, polymictic limestone clasts with a rare argillaceous or calcareous matrix. The minimum age of the limestone breccia is assigned to the upper Maokouan, whereas older fusulines-yielding clasts coexist. The scaly mudstone is intensely sheared and contains limestone blocks, angular limestone debris, and limestone sandstone and conglomerate beds. The scaly mudstone is referable to the upper Middle to lowest Upper Permian. -from Authors",
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T1 - Collapse of ancient oceanic reef complex - what happened during collision of Akiyoshi Reef Complex? Geologic setting and age of Akiyoshi Terrane rocks on western Akiyoshi-dai Plateau

AU - Sano, H.

AU - Kanmera, K.

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N2 - Akiyoshi Terrane rocks in the marginal parts of the plateau, comprise broken limestone, limestone breccia, and scaly mudstone. The broken limestone is characterized by penetrative and pervasive destruction of skeletal grains and primary sedimentary fabrics. The Kasimovian, Gzhelian, Asselian, Sakmarian, and Artinskian Stages are identified in the broken limestone, but they show no orderly stratigraphic succession. The limestone breccia consists of angular unsorted, disorganized, polymictic limestone clasts with a rare argillaceous or calcareous matrix. The minimum age of the limestone breccia is assigned to the upper Maokouan, whereas older fusulines-yielding clasts coexist. The scaly mudstone is intensely sheared and contains limestone blocks, angular limestone debris, and limestone sandstone and conglomerate beds. The scaly mudstone is referable to the upper Middle to lowest Upper Permian. -from Authors

AB - Akiyoshi Terrane rocks in the marginal parts of the plateau, comprise broken limestone, limestone breccia, and scaly mudstone. The broken limestone is characterized by penetrative and pervasive destruction of skeletal grains and primary sedimentary fabrics. The Kasimovian, Gzhelian, Asselian, Sakmarian, and Artinskian Stages are identified in the broken limestone, but they show no orderly stratigraphic succession. The limestone breccia consists of angular unsorted, disorganized, polymictic limestone clasts with a rare argillaceous or calcareous matrix. The minimum age of the limestone breccia is assigned to the upper Maokouan, whereas older fusulines-yielding clasts coexist. The scaly mudstone is intensely sheared and contains limestone blocks, angular limestone debris, and limestone sandstone and conglomerate beds. The scaly mudstone is referable to the upper Middle to lowest Upper Permian. -from Authors

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