Fig. 1. Overview maps. A e index map; 1e5 e dammed lakes mentioned in the text: 1 e Darhad; 2 e Todza; 3 e Muya; 4 e Chara; 5 e Chuya-Kurai. B e sedimentary basins of the
Baikal Rift Zone and surrounding topography: 1 e Chara; 2 e Muya; 3 e Upper Angara; 4 e Barguzin; 5 e Baikal; 6 e Tunka; 7 e Hovsgol; 8 e Darhad