Author: Josef Klomínský
Contributions and assistance from: F. Fediuk, P. Schovánek, T. Jarchovský
This book is a summary of the geological investigations conducted by a group of geologists from the Czech Geological Survey (CGS) in a broad area of the Czech part of the Krkonoše-Jizera Composite Massif within the last two decades. The first object of our observations was the interiors of the Bedřichov and Souš water supply tunnels in the Jizerské hory Mts. The second object of our observations was detailed geological mapping at the scale of 1 : 25 000 within a broad area between Liberec, Hejnice, Tanvald and Jablonec nad Nisou.