siltstone

American  

[silt-stohn] / ˈsɪltˌstoʊn /

noun

Petrography.

1. a very fine-grained sandstone, mainly consolidated silt.

---

siltstone British  

/ ˈsɪltˌstəʊn /

noun

1. a variety of fine sandstone formed from consolidated silt

---

siltstone Scientific  

/ sĭlt′stōn′ /

1. A fine-grained sedimentary rock consisting primarily of compacted and hardened silt. Siltstones are similar to shale but without laminations. They vary in color from black or gray to brown or red.

---

Etymology

Origin of siltstone

First recorded in 1925–30; silt + stone

Example Sentences

Claire emailed Cindy a few days after the find in the red siltstone at Lavernock Point between Cardiff and Barry on a stretch of the Glamorgan Heritage Coast known to be a prehistoric hotspot.

From BBC • Aug. 16, 2024

Employing cutting-edge techniques like Rock Eval Pyrolysis, they deciphered the organic richness of different types of rock, including shale, claystone, sandstone, and siltstone.

From Science Daily • May 7, 2024

There, among these bobble-headed rocks, we visited the Three Sisters and learned about the odd landscape of hard sandstone and soft siltstone that created the many goblins inside the park.

From Los Angeles Times • Sep. 28, 2023

Riding in the direction of those sub-regions, I pass cuttings of fractured siltstone and embankments overlooking vineyards where twisted, leafless vines are still struggling to escape the clutches of winter.

From The Guardian • Oct. 14, 2020

Rocks exclusively composed of silt or clay sediment, are called siltstone or claystone, respectively.

From Textbooks • Jan. 1, 2017