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2. Ripple marks - Wikipedia

   en.wikipedia.org/wiki/Ripple_marks

   Current ripple marks, unidirectional ripples, or asymmetrical ripple marks are asymmetrical in profile, with a gentle up-current slope and a steeper down-current slope. The down-current slope is the angle of repose, which depends on the shape of the sediment.

3. Sedimentary structures - Wikipedia

   en.wikipedia.org/wiki/Sedimentary_structures

   This creates ripple marks with pointed crests and rounded troughs, which aren't inclined more to a certain direction. Three common sedimentary structures that are created by these processes are herringbone cross-stratification, flaser bedding, and interference ripples. Asymmetrical ripple marks These are created by a one way current, for ...

4. File:Ample ripple marks on a rock from Rainbow Mountain ...

   en.wikipedia.org/wiki/File:Ample_ripple_marks_on...

   This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

5. Vinyl siding - Wikipedia

   en.wikipedia.org/wiki/Vinyl_siding

   Thicker grades of vinyl siding may, according to some, exhibit more resistance to the most common complaint about vinyl siding – its tendency to crack in very cold weather when it is struck or bumped by a hard object while others feel that a thinner product may allow more 'flex before cracking' and is a subject of debate. However, at "This ...

6. Window (geology) - Wikipedia

   en.wikipedia.org/wiki/Window_(geology)

   A tectonic window, or fenster (lit. "window" in German), is a geologic structure formed by erosion or normal faulting on a thrust system. In such a system the rock mass ( hanging wall block ) that has been transported by movement along the thrust is called a nappe .

7. Wave-formed ripple - Wikipedia

   en.wikipedia.org/wiki/Wave-formed_ripple

   Symmetrical ripple. Although symmetrical ripples are also called bi-directional ripples there is a difference between them. Bi-directional ripples are rarely symmetrical due to the difference in force of the two directions, where as the wave formed or oscillation ripples form from the circular water movement pattern of water molecules.

8. Way up structure - Wikipedia

   en.wikipedia.org/wiki/Way_up_structure

   A way up structure, way up criterion, or geopetal indicator is a characteristic relationship observed in a sedimentary or volcanic rock, or sequence of rocks, that makes it possible to determine whether they are the right way up (i.e. in the attitude in which they were originally deposited, also known as "stratigraphic up" or "younging upwards") or have been overturned by subsequent deformation.

9. Crown glass (window) - Wikipedia

   en.wikipedia.org/wiki/Crown_glass_(window)

   Crown glass. Crown glass was an early type of window glass. In this process, glass was blown into a "crown" or hollow globe. This was then transferred from the blowpipe to a punty and then flattened by reheating and spinning out the bowl-shaped piece of glass (bullion) into a flat disk by centrifugal force, up to 5 or 6 feet (1.5 to 1.8 metres) in diameter.