Simple Lithology

chalk

http://resource.geosciml.org/classifier/cgi/lithology/chalk

star this property 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. more like this
star this property source http://en.wikipedia.org/wiki/Chalk; C.S. Harris, 2009, unpublished web page, http://www.geologyshop.co.uk/chalk.htm more like this
star this property type
Resource
Concept
star this property broader limestone
star this property narrower chalk
star this property in scheme simplelithology
unstar this property is primary topic of chalk& properties=isPrimaryTopicOf