
1) These are groovy
Found on
https://www.crosswordclues.com/clue/striations

Grooves or ridge marks seen under the skin, the ultimate degree of muscle definition.
Found on
http://www.bodybuilding.com/fun/glossnz.htm

Thin raised lines on the surface of a coin, caused by excessive polishing of the die.
Found on
http://www.encyclo.co.uk/local/10142

Narrow, parallel grooves or lines.
Found on
http://www.encyclo.co.uk/local/21699

Grooves or channels in cloud formations, arranged parallel to the flow of air and therefore depicting the airflow relative to the parent cloud.
Found on
http://www.encyclo.co.uk/local/22268

Scratches or grooves on a rock or sediment surface caused by abrasive action of objects being transp
Found on
http://www.encyclo.co.uk/local/22392

Grooves of scratches found in surface rock that are the result of glacial abrasion.
Found on
http://www.physicalgeography.net/physgeoglos/s.html

Striations refers to very small parallel grooves or narrow channels of the faces of a crystal.
Found on
http://www.probertencyclopaedia.com/browse/HS.HTM

striations 1. A series of parallel striae (grooves, furrows); such as in a muscle or a mineral. 2. Scratch marks, or grooves; such as, thos found on a rock surface that has experienced glacial abrasion.
Found on
http://www.wordinfo.info/words/index/info/view_unit/2052/

Multiple scratches or minute lines, generally parallel but occasionally cross-cutting, inscribed on a rock surface by a geologic agent. Common indicators of (at least the latest) direction of glacier flow.
Found on
https://www.encyclo.co.uk/local/20131

Grooves or ridge marks seen under the skin, the ultimate degree of muscle definition.
Found on
https://www.encyclo.co.uk/local/20470

Grooves or ridge marks seen under the skin, the ultimate degree of muscle definition.
Found on
https://www.encyclo.co.uk/local/20966

parallel lines on the face of a crystal
Found on
https://www.encyclo.co.uk/local/21692

Scratches, or small channels, gouged by glacier action. Occur on boulders, pebbles, and bedrock. Striations along bedrock indicate direction of ice movement.
Found on
https://www.encyclo.co.uk/local/22327

Prominent parallel scratches left on bedrock by advancing glaciers.
Found on
https://www.encyclo.co.uk/local/22734
No exact match found.