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sulcus


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(pl. sulci)

Latin for groove or furrow. 1. A complex region of parallel ridges and furrows on a satellite surface, particularly well developed on Ganymede (e.g. Uruk Sulcus, an area of bright, grooved terrain bordering Galileo Regio).2. A major, rounded depression on the longitudinal mid-line of a brachiopod (Brachiopoda) shell. It usually occurs in the ventral valve and is usually accompanied by a major, rounded, shell elevation (fold) in the other valve.3. See dinophyceae.4. See pollen.

1. A complex region of parallel ridges and furrows on a satellite surface, particularly well developed on Ganymede (e.g. Uruk Sulcus, an area of bright, grooved terrain bordering Galileo Regio).

2. A major, rounded depression on the longitudinal mid-line of a brachiopod (Brachiopoda) shell. It usually occurs in the ventral valve and is usually accompanied by a major, rounded, shell elevation (fold) in the other valve.

3. See dinophyceae.

4. See pollen.

Subjects: Earth Sciences and Geography.


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