ANTICLINAL FOLD
This fine exhibit was disclosed when Lyttleton Street East was constructed in 1874.
Saddle reefs occur in similar folds of the sandstones and slates on lower geological horizons.
Mindat.org provides the following concise definition of a saddle reef: "A saddle reef is a mineral deposit associated with the crest of an anticlinal fold and following the bedding planes, usually found in vertical succession, esp. the gold-bearing quartz veins of Australia".
Map of the Castlemaine Mining District which shows historical features in superb detail, including mining divisions, reefs, gullies, and gold workings. Mining Department, Melbourne, 1860. High quality, durable A1 print in a satin finish. Large, 594 x 891 mm. Go to online shop.