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organosedimentary
organosedimentary adj. 
/ˌɔːɡənə(ʊ)sɛdᵻˈmɛnt(ə)ri/, /ˌɔːɡn̩ə(ʊ)sɛdᵻˈmɛnt(ə)ri/, /ɔrˌɡænoʊˌsɛdəˈmɛn(t)əri/ Geology relating to or designating structures (such as stromatolites) produced by a combination of sedimentation and biological processes.
Brit. /ɔːˌɡanə(ʊ)sɛdᵻˈmɛnt(ə)ri/
, /ɔːˌɡanə(ʊ)sɛdᵻˈmɛnt(ə)ri//ˌɔːɡənə(ʊ)sɛdᵻˈmɛnt(ə)ri//ˌɔːɡn̩ə(ʊ)sɛdᵻˈmɛnt(ə)ri/U.S. /ˌɔrɡənoʊˌsɛdəˈmɛn(t)əri/
, /ˌɔrɡənoʊˌsɛdəˈmɛn(t)əri//ɔrˌɡænoʊˌsɛdəˈmɛn(t)əri/ΘΚΠ
the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [adjective]
sedimentary1830
sedimental1883
organosedimentary1964
1964 Jrnl. Geol. (Chicago) 72 81/2 Algal stromatolites are laminated organosedimentary structures formed by the activity of algal mats in binding fine particulate sediment.
1972 Jrnl. Geol. (Chicago) 80 592/1 ‘Molar tooth’ structure..most likely resulted from organosedimentary processes similar to those forming algal stromatolites.
2000 Nature 5 Oct. 626/2 Microbialites are organosedimentary structures that can be constructed by a variety of metabolically distinct taxa.
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