Vocabulary
Geo-Seas adjusted Folk sediment lithology classes
| URI | http://vocab.nerc.ac.uk/collection/GS3/current/ |
|---|---|
| Description | Terms used to categorise sedimentary rocks and sediments in terms of the proportion of gravel, sand and mud. Initial terms proposed by Folk (1954) but subsequently revised by BGS and Flemming (2000). |
| Creator | Geo-Seas |
| Modified | 2010-10-15 |
| Version Info | 1 |
| Identifier | GS3 |
| Register Manager | British Oceanographic Data Centre |
| Register Owner | Geo-Seas |
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Members
| ID ↑ | Preferred Label ↑ | Definition ↑ | Date ↑ |
|---|---|---|---|
| G | gravel | Sand:mud ratio = all ratios and gravel percentage >80 | 2010-10-14 |
| gM | gravelly mud | Sand:mud ratio = <1:1 and gravel percentage 5-30 | 2010-10-14 |
| gmS | gravelly muddy sand | Sand:mud ratio = 1:1 to 9:1 and gravel percentage 5-30 | 2010-10-14 |
| gS | gravelly sand | Sand:mud ratio = >9:1 and gravel percentage 5-30 | 2010-10-14 |
| M | mud | Sand:mud ratio = <1:19 and gravel percentage <1 | 2010-10-14 |
| mG | muddy gravel | Sand:mud ratio = <1:1 and gravel percentage 30-80 | 2010-10-14 |
| mS | muddy sand | Sand:mud ratio = 1:1 to 3:1 and gravel percentage <1 | 2010-10-14 |
| msG | muddy sandy gravel | Sand:mud ratio = 1:1 to 9:1 and gravel percentage 30-80 | 2010-10-14 |
| S | sand | Sand:mud ratio = >19:1 and gravel percentage <1 | 2010-10-14 |
| sG | sandy gravel | Sand:mud ratio = >9:1 and gravel percentage 30-80 | 2010-10-14 |
| sM | sandy mud | Sand:mud ratio = 1:3 to 1:1 and gravel percentage <1 | 2010-10-14 |
| (g)M | slightly gravelly mud | Sand:mud ratio = <1:9 and gravel percentage 1-5 | 2010-10-14 |
| (g)mS | slightly gravelly muddy sand | Sand:mud ratio = 1:1 to 9:1 and gravel percentage 1-5 | 2010-10-14 |
| (g)S | slightly gravelly sand | Sand:mud ratio = >9:1 and gravel percentage 1-5 | 2010-10-14 |
| (g)sM | slightly gravelly sandy mud | Sand:mud ratio = 1:9 to 1:1 and gravel percentage 1-5 | 2010-10-14 |
| (m)S | slightly muddy sand | Sand:mud ratio = 3:1 to 19:1 and gravel percentage <1 | 2010-10-14 |
| (s)M | slightly sandy mud | Sand:mud ratio = 1:19 to 1:3 and gravel percentage <1 | 2010-10-14 |
