Akasaka Formation, Group

Geology

Formations: unnamed (3)

Members: unnamed (173), Middle (1)

Lithologies: mudstone (1), lime mudstone (4), wackestone (4), packstone (3), "limestone" (167)

Paleoenvironments: marine indet. (8), carbonate indet. (12), shallow subtidal indet. (151), lagoonal/restricted shallow subtidal (5), reef, buildup or bioherm (1), deep subtidal indet. (2)

Age range: base of the Kungurian to the top of the Capitanian or 279.30000 to 259.51000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Permian298.9 - 251.902Japan (Gifu) (204371)
Kungurian279.3 - 272.3Japan (128711 128712 128713 128714)
Roadian272.3 - 268.8Japan (133240 62294 90286 116063 117556 118922 128715 128716 128717 128718 128719 128720 128721 128722 128723 128724 128725 128726 128727 128728 128729 128730 128731 128732 128733 128734 128735 128736 128737 128738 128739 128740 128741 128742 128743 128744 128745 128746 128747 128748 128749 128750 128751 128752 128753 128754 128755 128756 128757 128758 128759 128818 128819 128820 189291 189292)
Wordian266.9 - 264.28Japan (81381 117864 128760 128761 128762 128763 128764 128765 128766 128767 128768 128769 128770 128771 128772 128773 128774 128775 128776 128777 128778 128779 128780 128781 128782 128783 128784 128785 128786 128787 128788 128789 128790 128791 128792 128793 128794 128795 128796 128797 128798 128799 128800 128801 128802 128805 128806 128807 128808 128809 128810 128811 128812 128813 128814 128815 128816 128817 128821 128822 128823 128824 128825 128826 128827 128828 128835 128836 128837 128838 128839 128840 128856 128857 128858 128860 153613 181935 212277)
Wordian - Capitanian266.9 - 259.51Japan (220705 220706 220707)
Capitanian264.28 - 259.51Japan (Gifu) (229965)
Capitanian264.28 - 259.51Japan (109637 109638 109667 110417 120906 128803 128804 128829 128830 128831 128832 128833 128834 128841 128842 128843 128844 128845 128846 128847 128848 128852 128853 128854 128855 128859 142029 181934)
Wuchiapingian259.9 - 254.17Japan (116886 116887 116888 128849 128850 128851 133503)