Bernhard Felber and Jorge Portugal wading through rapids, Sungaruyacu River.

Wandering dune landscape. 1. Moraine landscape. 2. Former coastal cliffs. 3. Uplifted stone-age sea floor. 4. Dunes of moraine. 5. Parabola dune. a. Wandering frontal part. b. Ridges. 6. Coastal dunes. 7. Bog. A. Chalk (Senonian). B. Younger chalk (Danian). C. Glacial deposits. D. Sea-floor sediments. E. Blown sand. Source: Atlas of Denmark.

Wandering dune landscape. 1. Moraine landscape. 2. Former coastal cliffs. 3. Uplifted stone-age sea floor. 4. Dunes of moraine. 5. Parabola dune. a. Wandering frontal part. b. Ridges. 6. Coastal dunes. 7. Bog. A. Chalk (Senonian). B. Younger chalk (Danian). C. Glacial deposits. D. Sea-floor sediments. E. Blown sand. Source: Atlas of Denmark.

Wandering dune landscape. 1. Moraine landscape. 2. Former lake bottom. 3. Dune landscape. a. Erosion slope. b. ditto. c. Dune hill. d. Parabola-dune. e. Filso. 4. Deflation-plain. 5. Littoral dunes. 6. Beach. A. Moraine. B. Marine deposits. C. Lake deposits. D. Blown sand. Source: Atlas of Denmark.

Wandering the north magnetic pole through geologic time. although students of ancient rock magnetism regard this path as fairly well established, there is no conclusive proof that the geographic pole followed the same path or that the continents maintained their same positions during this lengthy period. Notice also that there are no signs of frigid conditions or glacial action in northeastern Asia during the periods when the pole was supposed to be in that vicinity. Stokes, 1960, p. 168.

Washboard moraine looking east along east boundary of Sec. 29, T. 13, R. 2, W. 3.

Washboard moraine looking east along east boundary of Sec. 29, T. 13, R. 2, W. 3.

Washboard moraine looking east along east boundary of Sec. 29, T. 13, R. 2, W. 3.

Washboard moraine - south of Montmarte, Sask.

Diagram of a watercloset in neobabylonian house, showing the application of bitumen. Diagram copied from a book.

Waterfall and tropical vegetation on almost Jurassic sandstone beds. Boqueron del Padre Abad.

Waterfall and vegetation covered straight walls of Jurassic sandstone, Boqueron del Padre Abad.

Waterfall, MacDonald River, Yellowstone National River, Wyoming.

Wave cut cliff east of Markarfljot where the road runs close to the steep scarp that distinctly demarcates the border between the marine lowlands and the volcanic highlands. August 9, 1960.

Wave cut cliff indicating old shore of Rush Lake, Sask. Sand and boulders on strand; silt and clay further out in lake.