The deposits of the useful minerals & rocks; their origin, form, and content . Ztg., 1897, p. 343 ; Ein weiterer Beitrag zur Kenntnis der Erdbewegungen,Berg- und Huttenm. Ztg., 1901, p. 201. The lodes of the Oberharz extend over the entire Clausthal plateau,around Grmid, Wildemann, Clausthal-Zellerfeld, Lautenthal, Bockswiese,and Schulenberg, in a district 18 km. long and 8 km. wide. In greater partand as illustrated in Fig. 56, they are faidt fissures filled with ore andgangue. Such other lodes as represent the filHng of fissures along whichno movement took place, play but a subordinate part.
The deposits of the useful minerals & rocks; their origin, form, and content . Ztg., 1897, p. 343 ; Ein weiterer Beitrag zur Kenntnis der Erdbewegungen,Berg- und Huttenm. Ztg., 1901, p. 201. The lodes of the Oberharz extend over the entire Clausthal plateau,around Grmid, Wildemann, Clausthal-Zellerfeld, Lautenthal, Bockswiese,and Schulenberg, in a district 18 km. long and 8 km. wide. In greater partand as illustrated in Fig. 56, they are faidt fissures filled with ore andgangue. Such other lodes as represent the filHng of fissures along whichno movement took place, play but a subordinate part. The generalstrike is east-south-east to south-east, and the dip 70°-80° to the the lodes do not occur singly and independently, but severalmore or less parallel fissures occurring close to one another are linked THE LEAD-SILVEK-ZINC LODES 685 together by subsidiary branches ; lodes so related to one another formwhat is best described as a lode-series. The. occurrence is illustrated inFigs. 3 and 336 representing the different lode-series in the Oberharz,. Qeron Culm Granite /(ersantite Dijkei Diluvit/m. Alluvium Fig. 336.—The diiferent lode-series of the Oberharz. L. Beushauseii, Kgl. Pr. Geol. Landesanst. many of which extend 8-10 km, or more along the strike. These fromnorth to south are as follows : 1. The Gegenthal-Wittenberg Series. 2. The Lautenthal-Hahnenkleer Series. 3. The Bockswiese-Festenburo-Schulenbero- Series. 686 OEE-DEPOSITS 4. The Hiitschenthal-Spiegethal Series. 5. The Haiis Herzberg Series. 6. The Zellerfeld Main Series. 7. The Burgstadt Series. 8. The Rosenhof Series. 9. The Silbernaal The LaubhUtte Series. Ill form, most of the lodes—having generally a distinct clay-partingon the foot-wall while towards the hanging-wall merging gradually intoundisturbed country—are composite lodes in the sense of Cotta. The\vidth in consequence is often considerable and may be as much as40 m., nor to the depth of 910 m. so far reached has
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