experimental

Entry: chalk

URI: http://inspire.ec.europa.eu/codelist/LithologyValue/chalk

A generally soft, white, very fine-grained, extremely pure, porous limestone. It forms under marine conditions from the gradual accumulation of skeletal elements from minute planktonic green algae (cocoliths), associated with varying proportions of larger microscopic fragments of bivalves, foraminifera and ostracods. It is common to find flint and chert nodules embedded in chalk.

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is a Concept
submitted bySophie Chaduteau
accepted on 16 Jul 2026 11:53:11.430

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date accepted 16 Jul 2026 11:53:11.430
date submitted 16 Jul 2026 09:17:50.221
definition
entity chalk
source graph graph

item class Concept
label chalk
notation c94cea6b-3268-4039-a2e7-6a29d25f7ee9
register lithology value
status status experimental
submitter
account name s.chaduteau@brgm.fr
name Sophie Chaduteau

type register item
version info 2
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Definition

broader limestone
definition A generally soft, white, very fine-grained, extremely pure, porous limestone. It forms under marine conditions from the gradual accumulation of skeletal elements from minute planktonic green algae (cocoliths), associated with varying proportions of larger microscopic fragments of bivalves, foraminifera and ostracods. It is common to find flint and chert nodules embedded in chalk.
notation chalk
pref label chalk
type Concept

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